Greetings, and welcome to the Align Technologies 4th Quarter and Full Year 2019 Earnings Call. At this time, all participants are in a listen only mode. A question and answer session will follow the formal presentation. As a reminder, this conference is being recorded. It is now my pleasure to introduce your host, Shirley Stacy, Vice President, Corporate and Investor Communications.
Thank you, Ms. Stacy. You may begin.
Good afternoon and thank you for joining us. I'm Shirley Stacy, Vice President of Corporate Communications, Investor Relations. Joining me for today's call is Joe Hogan, President and CEO and John Marucci, CFO. We issued 4th quarter and full year 2019 financial results today via GlobeNewswire, which is available on our website at investor. Aligntech.com.
Today's conference call is being audio webcast and will be archived on our website for approximately 1 month. A telephone replay will be available today by 5:30 p. M. Eastern Time through 5:30 p. M.
Eastern Time on February 12. To access the telephone replay, domestic callers should dial 877-660-6853 with conference number 13,690,750 followed by pound. International callers should dial 201-612-7415 with the same conference number. As a reminder, the information that the presenters discuss today will include forward looking statements, including statements about Align's future events, product outlook and the expected financial results for the Q1 fiscal year outlook for 2020. These forward looking statements are only predictions and involve risks and uncertainties that are set forth in more detail in our most recent periodic reports filed with the Securities and Exchange Commission available on our website and atsec.gov.
Actual results may vary significantly and Align expressly assumes no obligation to update any forward looking statement. We've posted historical financial statements, including the corresponding reconciliation and our Q4 and full year 2019 conference call slides on our website under Quarterly Results. Please refer to these files for more detailed information. With that, I'd like to turn the call over to Align Technology's President and CEO, Joe Hogan. Joe?
Thanks, Shirley. Good afternoon, and thanks for joining us. On our call today, I'll provide some highlights from the Q4 and full year, then briefly discuss the performance of our 2 operating segments, Clear Aligners and Inter Oral Scanners. John will provide more detail on our financial results, discuss our outlook for the Q1 and share our high level thoughts about 2020. Following that, I'll come back and summarize a few key points and open up the call to questions.
Our Q4 was a strong finish to a great year with record revenues and volumes. Q4 Invisalign shipments increased 23.9% year over year and marked another major milestone with our 8th millionth Invisalign patient who started treatment in December. This rate of growth is really amazing to me. Given our 7,000,000 Thistleine patient was just this past May, 7 months ago. For Q4, iTero scanner revenues increased 20.2% year over year with strong growth, especially from international doctors.
On a sequential basis, Invisalign volumes were up 7.4% driven by strong growth in North America, EMEA and Latin America with all time highs in those regions. We also saw strong growth from Invisalign GO systems across all regions, reflecting continued progress with GP Dentists as well as a ramp up from Invisalign Moderate, which launched at the beginning of Q4 in North America. For the quarter, we shipped Invisalign cases to approximately 67,000 doctors, of which 7,200 were first time customers. We also trained over 5,500 new doctors in Q4, including 3,400 international doctors. For the full year, total revenues of $2,400,000,000 reflect record revenues up 22.4% year over year, includes $2,000,000,000 in Clear Aligner revenues.
In 2019, Invisalign volumes were up 24.2% year over year and iTero scanner revenues were up 38.5 percent year over year. During the year, over 1,500,000 people started treatment with Invisalign clear aligners worldwide, including 447,000 teens and younger patients, which is up 34.1%. Now let's turn to the specifics around our 4th quarter results starting with the Americas region. For the Americas region, Q4 Invisalign case volume was up 4.9% sequentially and up 19.3% year over year. On a sequential basis, Q4 results reflect strong growth from North American GP Dentists as well as continued strength from Latin American doctors.
Year over year growth for Q4 reflects continued adoption of Invisalign treatment from both orthodontist and GP dentist channels, which were up 20.5% and 17.3%, respectively. Latin America volume was up 79% year over year, led by continued strong growth from Brazil. For the full year, Americas Invisalign volume was up 17.5%. For our international business, Q4 was a great quarter with Invisalign case volume up 10.5% sequentially, driven by strong growth in the EMEA region, rebounding from Q3 2019 summer holidays and offset somewhat by slower growth in APAC, specifically China. On a year over year basis, strong Invisalign volume of 30.1% reflects increased utilization and continued expansion of our customer base in both EMEA and Asia Pacific region.
In Q4, we trained over 3,400 new Invisalign doctors internationally and roughly 55% in EMEA and 45% in APAC. For the year, international volume was up 34% year on year. In EMEA, Q4 was a strong quarter. Volumes were up 37.3% sequentially, driven by growth in all core markets, primarily from Spain and Italy, as well as from the teen segment, which was up 50.6% from Q3 2019. On a year over year basis, Invisalign volume was up 31.5%, driven by growth in all core country markets, including the teen segment, which is up 38.7% from the prior year.
For the full year, EMEA volume was up 34.2% led by Spain, Italy and France as well as our key expansion markets led by Turkey, the Middle East and Africa region and Russia. For APAC, Q4 was down sequentially as expected following a very strong Q3 2019 teen season in China as well as less than expected volume from adults, partially offset by strong volume growth from Japan. We believe the ongoing U. S.-China trade war and economic uncertainty remained a headwind for our consumer demand, especially for consumption of luxury goods and considered purchases. On a year over year basis, APAC volume was up 28%, driven by growth across the region led by Japan, Australia, New Zealand, Southeast Asia.
For the year, APAC volume was up 33.7%. Overall for the teen market, in Q4 approximately 116,000 teenagers started treatment with Invisalign clear aligners, an increase of 33.1 percent year over year driven by continued strong adoption across all major regions. For the full year, total teen cases worldwide grew 34.1 percent to approximately 4147,000 teenagers or 29.3 percent of our total volume. I'm pleased with our progress treating teenagers and younger kids and continued strong adoption of Invisalign clear aligners globally. For 2019, Invisalign treatment with Bandivir advancement was up 85% year over year and Invisalign First was up 4 55% year over year for a cumulative total of 41,500 cases and 32,400 cases to date respectively.
Product technology and innovation continues to be a key growth driver across our regions. Over the past year, we launched several new Invisalign offerings for both comprehensive and non comprehensive treatment, giving doctors more tools and choices to treat a greater range of cases from adults to teenagers and now kids as young as 7 years old, as well as new treatment options and technology designed to appeal to consumers who are considering or starting Invisalign treatment. In Q4, we introduced the Invisalign moderate package, a 20 stage treatment option designed for consumers whose treatment goals fall between the existing Invisalign Lite and Invisalign comprehensive packages and can be completed in the range of 5 to 12 months. We launched SmileView, an online tool designed to help prospective Invisalign patients visualize a new, straighter smile before they opt for Invisalign treatment. Align's new smile view visualization tool is designed to drive awareness and demand for teeth straightening using Invisalign treatment by engaging consumers and allowing them to see a simulation of what their smile could look like.
We also upgraded my Invisalign mobile app, which previously focused on patients already in treatment, but now includes several new features to help potential patients who are seeking information about teeth straightening treatment, including an in app version of SmileView. Consumers can use the app to take a selfie and instantly visualize how their smile can transform after Invisalign treatment. Our consumer marketing efforts are designed to build the category and drive demand for Invisalign treatment through a doctor's office. We invest over 100,000,000 dollars each year in consumer marketing programs including TV, digital social media, PR, event marketing as well as our patient concierge program. Our goals are to make the Invisalign brand a household name worldwide and to motivate consumers to seek Invisalign treatment through a doctor's office.
In Q4, we continue to see strong engagement with consumers and had over 5,300,000 unique visitors on invisalign.com sites for a total of 18,000,000 year over year. Other key metrics showed increased activity and engagement with the Invisalign brand and are included in our Q4 quarterly slides. For our Otero scanner and services business, Q4 was very strong quarter with better than expected revenues, up 6.6% sequentially and 20.2% year over year driven by strength from all regions. Q4 volumes reflect continued commercialization of the Itero Element 2 and Element Flex scanners, especially for orthodontists in North America. They continue to roll out with our major DSO partners and increased sales internationally, especially in Japan.
2019 was a great year for our Itero business with total revenues up 38.5 percent year over year. Cumulatively over 20,500,000 orthodontic scans and 4,700,000 restorative scans have been performed with Itero scanners. Use of the Itero scanners for Invisalign case submission continues to grow and remains a positive catalyst for Invisalign utilization. For Q4, total Invisalign cases submitted with a digital scanner in the Americas increased to 79.5 percent from 73.5 percent in Q4 of last year. International scans increased to 64.7 percent, up from 57.5% in the same quarter last year.
What's really exciting is to see that within the Americas, 93.3% of cases submitted by North American orthodontists are submitted digitally now. We are pleased with the continued progress of our Itero business and remain confident that it will continue to help drive our overall growth and help increase the adoption of our digital platform with Invisalign treatment. With that, I'll turn the call over to John.
Thanks, Joe. Now for our Q4 financial results. Total revenue for the 4th quarter was $649,800,000 up 7% from the prior quarter and up 21.7% from the corresponding quarter a year ago. For clear aligners, Q4 revenues of $543,600,000 was up 5.3% sequentially with strong Invisalign volume from EMEA and North America. Year over year clear aligner revenues growth of 22% reflects strong Invisalign growth volume across all regions.
Clear aligner revenue growth was unfavorably impacted by approximately 1.3 points year over year from foreign exchange. Q4 Invisalign ASPs were down sequentially by approximately $20 to $12.40 primarily due to discounts mix and unfavorable foreign exchange. On a year over year basis, Q4 Invisalign ASBs increased approximately $5 primarily reflecting price increases in all regions and increased additional aligner revenues, partially offset by promotional discounts and unfavorable foreign exchange and product mix shift. Total Q4 Invisalign shipments of 413,700 cases were up 7.4% sequentially and up 23.9% year over year. Our scanner and services revenue for the Q4 was $106,200,000 up 16.6% sequentially due to volume increases in EMEA and Americas.
Year over year revenues were up 20.2%, primarily due to volume increases in EMEA, APAC and the Americas as well as higher services revenues from our increased installed base. Moving on to gross margin. 4th quarter overall gross margin was 72.6%, up 0.6 points sequentially and up 0.9 points year over year. Clear aligner gross margin for the 4th quarter was 74.1%, up 0.6 points sequentially, primarily due to lower freight and training costs and lower number of aligners per case, partially offset by lower Invisalign ASPs. Clear aligner gross margin was flat year over year, primarily due to lower training costs and a slight increase in Invisalign ASPs, offset by an increase in aligners per case.
Scanner gross margin for the 4th quarter was 64.9%, up 0.8 points sequentially, primarily due to manufacturing efficiencies, partially offset by lower ASPs and up 5 points year over year, primarily due to manufacturing efficiencies and higher service revenue and scanner ASPs. Q4 operating expenses were $320,800,000 up sequentially 3.4 percent and up 22.2% year over year. The sequential increase in operating expenses primarily reflects our continued investment in sales and marketing and R and D activities, partially offset by lower litigation expenses. Additionally, the Q3 included a $6,800,000 benefit from the settlement of our Invisalign store leases. Year over year, the increase in operating expenses reflects higher spending commensurate with go to market activities offset by lower legal expenses.
Our 4th quarter operating income was $151,200,000 up 18.9 percent sequentially and up 25.5 percent year over year. Our 4th quarter operating margin was 23.3%, up 2.4 points sequentially and up 0.7 points year over year. The sequential increases in operating income and operating margin are primarily attributed to an improved gross profit and reduction in litigation expenses. Operating margin was impacted by approximately 0.6 points year over year from foreign exchange. The 3rd quarter operating income included a $6,800,000 benefit from the settlement of our Invisalign store leases, which increased Q3 operating margin by 1.1%.
On a year over year basis, the increase in operating income and operating margin primarily reflects higher gross profit and operating leverage, partially offset by continued investment in R and D, geographic expansion and go to market activities. With regards to 4th quarter tax provision, our tax rate was 22.2%, which includes approximately $5,800,000 of tax benefit related to a tax audit settlement. 4th quarter diluted earnings per share was $1.53 up $0.25 sequentially and up $0.33 compared to the prior year. Moving on to the balance sheet. As of December 31, 2019, cash, cash equivalents and marketable securities, including both short and long term investments were $868,600,000 an increase of approximately $86,700,000 from the prior quarter, which is primarily due to higher cash flow from operations.
Of our $868,600,000 of cash, cash equivalents and marketable securities, dollars 590,100,000 was held in the U. S. And $278,500,000 was held by our international entities. Q4 accounts receivable balance was $550,300,000 up approximately 3.5 percent sequentially. Our overall days sales outstanding was 76 days, down 3 days sequentially and up 2 days as compared to Q4 last year.
Cash flow from operations for the 4th quarter was $218,200,000 and free cash flow, defined as cash flow from operations less capital expenditures, amounted to $175,600,000 Our business continues to have a very strong cash generation. Capital expenditures for the Q4 were $42,500,000 primarily related to our continued investment in increasing aligner capacity and facilities. During Q4 2019, we repurchased $100,500,000 of our stock against our stock buyback authorization and have $100,000,000 still available for repurchase under the May 2018 repurchase program. Before we move to the Q1 outlook, I would like to make a few comments on our full year 2019 results. In 2019, we shipped a record 1,500,000 Invisalign cases, up 24.2%.
This reflects 34% volume growth from our international doctors and 17.5% volume growth from our Americas doctors. Shipments of our Itero scanner were up 29.7% over 2018. Total revenue was a record $2,400,000,000 up 22.4 percent year over year with clear aligner revenues up $2,000,000,000 up 19.8% year over year. Clear aligner revenue growth was impacted by approximately 2.6 points year over year from foreign exchange. 2019 Itero scanner and services revenues were a record $38,100,000 up 38.5 percent.
Full year operating income of $542,500,000 up 16.3% versus 2018 and operating margin at 22.5%. 2019 operating income also includes a litigation benefit of $51,000,000 and Invisalign store closure costs of $23,000,000 for a net positive impact on operating margin of approximately 1.2%. Operating margin was unfavorably impacted by approximately 1 point year over year from foreign exchange. Free cash flow was $597,600,000 up $266,200,000 versus 2018. For the year, we repurchased over 1,800,000 shares of Align stock for $400,000,000 2019 diluted earnings per share was $5.53 Before I comment on the demand outlook, I wanted to take a minute to talk about the corporate structure reorganization to relocate our European headquarters from the Netherlands to Switzerland in Q1 and the implication to our GAAP financials.
As a result of the corporate structure reorganization to relocate our European headquarters from the Netherlands to Switzerland in Q1, our Q1 2020 GAAP tax rate will reflect a significant one time tax benefit associated with the recognition of a deferred tax asset related to the intra entity sale of certain intellectual property rights. This deferred tax benefit will be amortized starting in 2020 and will continue into subsequent quarters years. The period over which this tax benefit will be recognized depends on the profitability of our Swiss headquarters and therefore is uncertain at this time. Management ordinarily assesses the health of our business with regard to these types of one time events and believes this reorganization will make it difficult for investors to assess our core underlying financial performance where we do report solely based on GAAP. Therefore, we will supplement our GAAP information with non GAAP measures going forward.
Beginning in Q1 2020, in addition to our GAAP results, we will present non GAAP measures that exclude the aforementioned tax impact, along with certain other items that may not be indicative of our fundamental operating performance, including discrete cash and non cash charges in order to present investors with greater transparency into our core business operations. We will present GAAP, non GAAP and a reconciliation in our earnings release and conference call materials. With that, let's turn to our Q1 outlook and the factors that inform our view. Q4 was a strong quarter with record volumes and we expect to enter Q1 with this momentum from both the Americas and the EMEA regions. For the Americas region, we expect Q1 to increase sequentially with growth from North America, orthodontists and GP Dentists.
For international, we expect Q volumes to be down sequentially. We expect EMEA to be up sequentially as momentum continues from Q4. However, we expect the growth to be offset by a sequential decrease in APAC, primarily due to the expected impact from the novel coronavirus in China. We expect our Itero business to be down sequentially following a seasonally strong Q4 and consistent with seasonal trends in capital equipment market and fewer sales in China. Many of you have been following the news regarding the recent outbreak of the novel coronavirus in Wuhan, the capital of the Hubei province in China.
China is one of our largest country markets and represents roughly 8% of our total revenues. It is home to hundreds of employees across China. Thankfully, we are not aware of any employee or family member who has contracted the novel coronavirus. The situation in China is very fluid and we are closely monitoring it. We are in contact with all relevant agencies globally.
The Chinese government has implemented travel bans and has essentially shut down public transportation in Wuhan. It has also issued public warnings to avoid all non essential medical and dental procedures for the time being. Some government run hospitals and private clinics are following suit by instructing patients to stay home unless it's an emergency. While we do not believe there is any impact to our product safety due to the stringent health and safety procedures ingrained in our manufacturing processes, we are taking additional precautions across China to minimize the risk of spreading illness to our internal teams, including additional protections and health screening procedures as well as travel restrictions. Given the increased uncertainty and disruption to our employees, doctors' practices, their patients and consumers, we believe it is prudent to reduce our outlook for Q1 to reflect the increased risk.
Therefore, for Q1, our outlook reflects approximately $20,000 to $25,000 less Invisalign cases and $30,000,000 to $35,000,000 less revenues for Invisalign and iTero products sold in China. In addition, we are also absorbing $3,000,000 to $4,000,000 in Aitou, China manufacturing plant and treatment planning capacity, which results in approximately 0.5% gross margin impact. With this as a backdrop, we expect the Q1 to shape up as follows: Invisalign case volume is expected to be in the range of 396,000 to 406,000 cases, up approximately 13% to 16% year over year. We expect Q1 revenues to be in the range of 615,000,000 to $630,000,000 up by approximately 12% to 15% year over year. Our supply agreement with SDC was terminated December 31, 2019, and hence, our Q1 2020 revenue outlook does not reflect any SDC volume as compared to the same quarter a year ago when non Invisalign aligners supplied to SDC contributed about $5,700,000 to revenue.
On a GAAP basis, we expect Q1 gross margin to be in the range of 71 0.5% to 72%. Q1 gross margin is expected to be down sequentially from slightly lower ASPs driven by lower mix of China volume and idle China manufacturing and treatment planning capacity in our facility in Xi'an. On a non GAAP basis, we expect Q1 gross margin to be in the range of 71.7% to 72.2%, excluding stock based compensation from gross profit. We expect Q1 GAAP operating expenses to be in the range of $345,000,000 to $350,000,000 which reflects our continued investments in go to market activities along with our annual increase in employee compensation expenses. On a GAAP basis, Q1 operating margin is expected to be in the range of 15.4% to 16.5%.
On a non GAAP basis, we expect operating margin to be in the range of 19.5 percent to 20.5 percent, excluding stock based compensation from operating income. On a GAAP basis, our effective tax rate is expected to be approximately negative 1400%, which includes approximately $1,400,000,000 of tax benefit associated with the recognition of a deferred tax asset related to the intra entity sale of certain intellectual property rights resulting from our corporate structure reorganization. This deferred tax benefit will be amortized starting in 2020 and continue into subsequent quarters years. The period over which the tax benefit will be recognized depends on the profitability of our Swiss headquarters and is therefore is uncertain at this time. On a non GAAP basis, excluding the one time benefit from the intra entity sale of certain IP rights, as mentioned above, and the tax benefits related to stock based compensation, we expect our tax rate for Q1 2020 to range from approximately 22% to 23%.
Diluted shares outstanding should be approximately 79,100,000 exclusive of any share repurchases. Taken together, we expect our Q1 2020 GAAP diluted earnings per share to be in the range of $18.65 to $18.74 Non GAAP diluted earnings per share is expected to be in the range of $1.19 to $1.28 from excluding the one time tax benefit from the intra entity sale of IP rights, as mentioned above, and the stock based compensation related expenses. In addition, as we continue our operational expansion efforts, we expect capital expenditures for Q1 to be approximately 95,000,000 dollars to $100,000,000 and we expect depreciation and amortization to be $23,000,000 to $25,000,000 Now let me turn to our view for the full year 2020. As I just described, the situation in China surrounding the novel coronavirus is very fluid. While our Q1 outlook includes our best view of how the coronavirus will impact our business in the Q1, it is very difficult to predict and forecast the longer term impact.
Therefore, we are providing you with our best view of 2020 prior to the novel coronavirus outbreak so that you can use it as a baseline from which to build your models for the year. This means that you will need to make your own assumptions about how the coronavirus outbreak impacts our business over the remainder of 2020. Beyond the Q1 outlook and our commentary for 2020 below, we will not provide specific 2020 guidance at this time. We will continue to monitor the situation closely and update these comments when appropriate. With that, our outlook for 2020, notwithstanding the impact of foreign exchange rates and the novel coronavirus, is as follows.
We anticipate total revenue growth for the company, Invisalign and Itero to be at the low end of our long term operating model target of 20% to 30%. We anticipate Invisalign volume to be at the low end of our long term growth model target of 20% to 30%. On a GAAP basis, we anticipate 2020 operating margin to be slightly above our 2019 operating margin of 22.5%. We also expect our long term operating margin range of 25% to 30% to remain unchanged. On a non GAAP basis, we expect 2020 operating margin to be approximately 3.5% higher than our GAAP operating margin, excluding stock based compensation from operating income.
On a GAAP basis, our 2020 tax provision include approximately $1,400,000,000 of tax benefit in Q1 associated with the recognition of a deferred tax asset related to the intra entity sale of certain intellectual property rights. This deferred tax benefit will be amortized starting in 2020 and continue into subsequent quarters years. The period over which this tax benefit will be recognized depends on the profitability of our Swiss headquarters and therefore is uncertain at this time. On a non GAAP basis, excluding the one time tax benefit from the intra entity sale of certain IP rights as mentioned above, and the tax benefits related to stock based compensation, we expect our tax rate for 2020 to range from approximately 22% to 23%. With that, I'll turn it back over to Joe for final comments.
Joe?
Thanks, John, and thanks to those of you joining our call today. Overall, 2019 was a great year for Align, and I'm very pleased with the strong performance for both our Invisalign and iTero businesses. Not only did we celebrate our 22nd year in business, but we also achieved several major milestones, including our 8 millionth Invisalign patient, $2,400,000,000 in revenue for the first time. As we kick off 2020, we're very concerned for the safety and health of our employees, customers, doctors and their patients in China. Their well-being is our top priority and we are doing what we can to ensure that they are in good hands.
We are working with our local teams to donate medical supplies and provide funding to help combat the outbreak. Like SARS in 2003, the coronavirus is already having a major impact on China and may expand to other countries around the world. I saw and experienced this impact as the CEO of GE Healthcare. We expect that like SARS and MERS before it, in time the virus will be addressed, the markets will assume an equilibrium and our business in China will continue to grow. The timing of this is uncertain, but the future growth opportunity for our business in China is certain.
While we are mindful of the increased uncertainty in China and its impact on our Q1 outlook, it's important to take a step back and remember that our business is broad and deep. We have a strong growth in other regions and are seeing strong momentum in the Americas, across EMEA and in all other countries in APAC, especially Japan, Australia, New Zealand, Southeast Asia, Taiwan and Korea. In closing, I want to share with you a few thoughts of you regarding the future of our industry. Never before have I seen an amount of change in products, technology, distribution channels and business models. Align has always believed that the market opportunity for clear aligners is significantly larger than the underlying orthodontic case starts each year.
We believe that over 300,000,000 people want a better smile and the best way to access that potential patients is through doctors using a digital approach with Itero scanners and the Invisalign system. Our partnership with doctors is a critical part of how we win with consumers. We will continue to insist that patients visit a doctor in person for Invisalign treatment. If I could leave you with one thing, it's that Align is not just a provider of the best clear aligner in the industry and our clear aligner is not just a piece of plastic. Align is founded on digital, IT data, artificial intelligence, software, algorithms, digital scanning and 3 d printing.
We are the largest mass customized business the world has ever seen. Each Invisalign aligner is the output of millions of lines of code and thousands of digital actions that allow us to ship 500,000 customized Class 2 medical devices a day. As a digital leader, we must continue to provide doctors with the best technology and tools to help them treat any patient. In 2020, we expect to bring several new products and systems and services to market, but we must provide more than just individual products. In digital, you pick a platform, not a product.
You pick a company you believe in for the long term. Digital dentistry is being driven by products like Itero scanners and Invisalign clear aligners and we believe our digital platform is setting the foundation for the future of dentistry. Align and our doctor partners are sitting on the edge of one of the biggest areas of growth that dentistry has ever seen. I'm very excited about what this means for our business and continued growth prospects in 2020 and beyond as we continue to transform Smiles and change lives. With that, I want to thank you again for joining the call.
I look forward to updating you on our progress as the year unfolds. We'll see many of you at the Chicago Midwinter Meeting next month as well as industry and financial conferences throughout the year, including our analyst meeting on May 12 in New York City. Now I'll turn the call over to the operator for questions.
Thank you. We will now be conducting a question and answer session. Our first question comes from the
Joe, maybe just to start on China. The revenue headwind that you guided to, I think it's kind of 60% or so of your kind of total China volume. Can you talk maybe just about what you've seen so far in January that kind of that you used to kind of inform your estimate of the case and revenue impact? And if we continue to see this play out, can you kind of think about help us think about how we should frame the impact going forward?
Nate, I think we framed it as well as we can in the Q1. And that's what we can see right now. I think our responsibility when you think about it is we're through January right now. We can take a look at our order rates. And we can responsibly make the prediction that John just did that we're going to 20,000 to 25,000 cases that we think we're going to be pressured on.
An unfortunate part of this whole thing is we say we're on the dark side of the moon right now because of the Chinese New Year and our order rates drop off to a point that you hardly see them and it's not just now, it's been every year since. And since the government there has extended the holidays for another week or so and it could go on, we really don't have we just take our best guess on that $200,000,000 $25,000 and I we're not ready to project I'm not ready to project anything into the second quarter and the rest of the year. Remember, going back to SARS, I talked about as involved with ADFG Healthcare is I remember it took 6 months from the initial infection rate all the way to not that it ended, but it actually stabilized and things got back in gear again. So we know that it'd be more than the Q1 it will be impacted, but none of us are ready to give any kind of a forecast as to the extent of that.
That's fair. And then maybe just a question on the Americas GP growth. There was a nice acceleration in the quarter. Utilization also ticked higher. You've obviously put a lot of investment into that channel.
Can you maybe just talk about some of the traction that you're seeing among the GP
base that you serve? Yes. Nate, there's multiple levers we pull in sense, right? We have more of a segmentation around GPs today from a sales standpoint. You'll see that accentuated as we go into 2020.
We have a product called iGo that it just fits the workflow aspect of GP's extremely well. Then you have to add to that the extra salespeople we put in last year, a lot of those salespeople were making GP calls, because there's just there's only so far you can go for the orthodontic community. And the last part of that, we have a huge amount of increased advertising from a consumer standpoint. And I read about the consumer hits for new interest in Invisalign, which are pretty outstanding when you look at it from a year to year basis. So it's really all those variables we see are being put in place to help to drive that growth.
Thanks, Nate. Next question, please.
Our next question comes from the line of Kevin Caliendo with UBS. Please proceed with your question.
Hi, thanks. Thanks for taking my call. Just a quick one on China. Hi. So a quick one on China.
The how is it impacting the training of the doctors in China? Obviously, it's impacting your revenues, but is it impacting the overall expansion of your business there as well, so that as we think about the number of doctors and think about the number of dentists there that will be registered Invisalign users. How do we think about the impact this is going to have on that as well?
Well, Kevin, honestly, it's a good question because that is a variable in the equation you have to think of. So right now, you can imagine when you have a contagion like this, you don't want a lot of people hanging out together and Chinese government knows that and we know it too. Our training facilities are in Shanghai and also Chengdu. There's obviously infection rates in those areas, but they're not like the major provinces that have been impacted so far. But my anticipation is after the holidays, you will just have to watch and see exactly what's developed in the different provinces in China and what that means.
If it's not a big issue in Shanghai or Chengdu or whatever, obviously, we'll bring doctors in and train them. But we're not in a position to even guess on that right now. But it's a great question. It's a key variable. And as things develop, we'll certainly come back after the Q1 and let you know.
And just one quick follow-up, as we talk about sort of expectations around margin expansion embedded in your 2020 guidance, Can you give us a little bit of apples to apples on what your expectation if we were to sort of back into your non GAAP gross margin or operating margin expansion, like what's sort of embedded in the non GAAP side?
Yes, Kevin, this is John Maraje. Yes, we would expect it to be slightly up, both on a GAAP and on a non GAAP basis for operating margin as well as gross margin.
Okay, great. Thank you so much.
Yes. Thanks, Kevin.
Our next question comes from the line of John Kreger with William Blair. Please proceed with your question.
Hi, thanks very much. John, first one is for you. Just to clarify that the full year 2020 commentary that you gave us, does that reflect a weaker Q1 from China, but the rest is up to us? Or does it not reflect the Q1 hit? Just wanted to clarify that.
It's the latter. It does not reflect any impact from China.
No impact from China. Okay, that's helpful. And then Joe, again, just sticking on the China theme. If we think about over the last year, the rates of growth that you guys have experienced in that region have been all over the place. From your perspective, what do you sort of view as sort of the new normal there in terms of once we get beyond the infection outbreak?
Is it 20%? Is it 50%? Do you have an updated view on it?
John, I don't. I mean, because obviously we're in a storm right now and just trying to get through what that looks like. As I said in my script, if you think about it, as we came off the Q3, we had a really good teen season. We didn't have as much of an adult pickup in the Q4 as we had hoped. But again, it was double digit growth and still robust growth, but not the 50% to 60% that we had enjoyed in China for several years.
So I'd say, John, I'd like to give that to you. I can't reliably give it to you now, but it's double digit growth. We continue to make our investments. We continue to be excited about China. It's our 2nd biggest market.
We don't think that's going to change. But we certainly got to get through this cloud before we can give you something definitive in that sense.
Great. Thank you.
Our next question comes from the line of Jon Block with Stifel. Please proceed with your question.
Great. Thanks guys. Good afternoon.
Hi Jon.
So I'm going to throw out
a couple of growth rates on China, just trying to do some implied math. I mean with 20,000 to 25,000 fewer cases in 1Q, it seems like you're implying that China is down 50% year over year in the Q1 in case volumes. And that would even be considering coronavirus just sort of not there for the entire quarter from a rev rec standpoint. So is that in the ballpark that we're seeing sort of that magnitude of a decel? And then maybe the follow-up to that first question would be, more importantly, what do you think about these cases?
Are they lost? Are they delayed? Are they some sort of a combination of the 2?
Hey, John, this is John. I think you're in the ballpark, I think, when you look at what we see from China. I mean, it's certainly last year was significant growth in Q1 and this year obviously impacted by the coronavirus. It's difficult to say from other cases lost or delayed and so on. There's certainly for this time period, they're not happening.
It's difficult for us to see afterwards, after this period of time to see whether those cases come back or not. But at least for the 4th our Q1 here, we're assuming that they're not going to come into the quarter.
Okay, got it. Then maybe just shift gears and I don't want everything lost on China. Joe, you highlighted and I think for the first time quantified the number of MAP and Invisalign first cases, pardon me. I think the summation was around 75,000 out of 450,000 team cases for the year. So this has quickly become 15% to 20% of your team cases.
Maybe if you can just talk to that. Do you still see hyper growth for those two offerings into 2020 beyond? And maybe there's an update on palatal expansion as well. Thanks, guys.
Hey John, yes, I'm really excited about the math growth when you see that. And remember math too, it's kind of age contained. It's a growth aspect between like 10 years old and 12.5 years old where that really fits. But when you take MAF and you combine that with First, that is about 20% to 25%, including pilot expansion, of the teen marketplace. So the idea that that's 15% to 20% of our team cases you talked about, matches up pretty well in the sense of what we're seeing in the marketplace overall.
I do think you'll continue to see this hyper growth out there. It is a great solution. We look at Teams First and how it works. You don't see it, John, but we continue to improve math all the time. We learn about anchorage on back molars and certain kinds of teeth and whatever.
We program those things. We have silent releases. But piece by piece, we get better at being confident in moving those Class II things forward. So overall, we're excited about it. I'm confident about the technology.
Lastly, on the paddle expansion piece, we know how to make this. We have the right kind of software to develop it. The trick is finding something that you can actually scale from a manufacturing standpoint and get consistent properties with it. And I feel we've been closing in on that rather fast. So we'll give you more of an update as we go into the Investors Conference in June I mean in May and more specificity around that kind of a launch date.
Fair enough. Thanks for your time guys. Okay.
All right. See you, John.
Our next question comes from the line of Richard Newitter with SVB Leerink. Please proceed with your question.
Hi, thanks for taking the questions. Joe, 2 for you. Just going back to your comment on your experience with SARS the last time, any impact on the business you were running there at GE. Can you maybe just give a little bit more color on what's the definition of stabilization and kind of maybe just talk through some of the visibility that was able to come into focus and what how that happened over that 6 month time period? And then I
have a follow-up. Thanks.
Yes. It's just really interesting as I say, when I talk about stabilization, it means infection rate. It's how when you start to get to that plateau about not an increase in infection rate, but a decrease and you'll see that. And that's kind of the deceleration And that indicates that it's kind of under control. Again, what I learned in 2,003 about China is, and I think in the Western world, we miss this sometimes, it's how much influence the overall government influences there.
You can see they change holidays, they lock down cities, they take drastic measures to try to deal with these things. It's something that's really unheard of from a Western world standpoint. I think we kind of have to respect that, that it's a society that will respond to these kind of things in a way that we're not necessarily used to, which is actually good for the population because they're just trying to isolate it and contain that thing because depending that virus hasn't been quantified yet with exactly its infection rate, meaning how many people are infected per person that's infected. But the numbers are jumping around. But this is in the area of SARS.
And so I think the best proxy we can have right now is the SARS side. So that's the 2 things. Just one is when it plateaus, when fewer people are being infected and you see that curve start coming down. And then secondly is how fast the Chinese government will move and that's why we're staying close with what's going on there and just staying behind the government and trying to support their actions. Okay, Rich?
Okay, that's helpful. Go ahead.
No, nothing, Rich.
Okay. Just a follow-up here on appreciate the operating margin guidance excluding the China factors here. But let's just say there is some extended impact moving through the year. What's your how are you thinking about your approach to operating margins if there were to be kind of an extended shortfall in revenues from that region? And you kind of go full blast on the spend?
Or is there a target that you'll kind of look to on preserving leverage? Thanks.
Hey, Rich, this is John. It's probably too early to tell that now. I mean, like we've said, we're kind of in the dark side right now of the extended Chinese New Year. Will see how things progress as we come out and make that assessment. I mean, as we've talked about a number of times in our business, there's a lot of different levers that we can pull or not pull based on the conditions that are going on in a particular market and we would assess that as well with China.
Our next question comes from the line of Matthew O'Brien with Piper Sandler. Please proceed with your question.
Afternoon. Thanks for taking my questions. Just a couple here. Hello. One was asked a little bit earlier just about the deferral of these cases.
I mean, if they're locking everybody down in China at this point, it's not like they're going to be getting brackets and wires. So I'm just trying to figure out why this wouldn't come back in eventually. And then if it were to come back in, say, in a Q4 timeframe or something like that, could you do upwards of 50,000 cases in a quarter, so like all of this would come running back to you fairly quickly if the all clear was signal?
Matt, could we do 50,000 cases? I mean, we have capacity, we have both treatment capacity and we have bleed out capacity obviously through Mexico and Costa Rica if we were overwhelmed in China and what we have there too. But Matt, my experience in this business is that things don't happen like that, that you don't get this kind of a bow wave that comes after something like this. And so it's not that you lose those cases. From an adult standpoint, they just get pushed out into the future, but they don't come back to you all at once.
It's just latent demand. The only exception I would make to that, that I would guess that the teen season because teens are kind of timed based on their age that you have a little more of what I call bolus effect there. You'd have a bowel wave that you really capitalize on teens, but it wouldn't occur that way with adults.
Okay. Can you give us so it's fair to assume that this is not lost revenue and it will come back at some time. Can you give us any sense for the split between the 2 teen versus adult over in China?
No. At this point in time, given what we're seeing over there, I can't even guess that. If you're asking for historical splits, I don't think we've shared that data in the past. And just know that our Q3 is always our biggest quarter in China. And it's the biggest because it is teen season.
So if you take a look historically, you'd see what those numbers look like on adult versus teen.
Got it. One quick one for John, just on gross margin. It's come down over the last kind of 3 years to the low 70s in 2019. And a lot of moving parts here, but how do we think about that metric going forward? Are we kind of getting close to the bottom on that metric?
Or should we expect more kind of annual erosion of that metric?
Well, I think, Nate, you saw that our gross margin improved 60 basis points in Q4 from Q3. And we would look into the future to expect that with the cases that we do, sometimes more difficult versus even the non comprehensive cases, we know how to drive that gross margin and we'd expect to see improvement in 2020 beyond.
Thank you.
Thanks, Matt.
Our next question comes from the line of Steve Buschow with Wolfe Research. Please proceed with your question.
Hi, Andy. Hi, Andy.
Thanks for the time here. I wanted to try to maybe put a rosier lens potentially on China for just a second, so we can consider the possibility that things do result. One is and sorry if I missed this, but did you give China growth for the Q4? And then the second part of it is, if this ends up isolated to Wuhan or the province surrounding Wuhan, how does that change your view on the impact of the business?
Hey Steve, it's Joe. It would obviously change it because now you segment what the issue is in China. But I don't have a guess in the sense of what that would mean. I mean, when you think about it, obviously Shanghai is a big part of our business and more north of that Beijing is too. I'd say the coastal provinces or whatever have always been pretty big.
So I think your comment would be if it's just isolated to Wuhan or generally isolated to Wuhan, the effect won't be as dramatic. But I can't I really can't quantify it, Steve. And I find it kind of surprising that it not that the infection rate is going to reach the other provinces the way it has Wuhan. It's just the Chinese government will take the same steps there to make sure that whatever infection that they do have in those regions don't end up being like Wuhan. Does that make sense?
It makes a lot
of sense. And I'm sorry, did you give a China growth rate for 4Q?
No, we didn't, Steve. It's similar growth that we saw in Q3.
Okay, perfect. Thank you. And then John, just a couple of quick ones for you and then I'll drop back in the queue. One is, are you willing to give folks a sense for how much of the benefit on the margins in 2020 there is tied to the wind down of the Netherlands facility or some of the legal expenditures winding down? And then can you give a sense for what your assumption is for pricing year on year in the outlook for 2020?
I really appreciate all the color, Joe. Thank you.
Yes. When you look at the some of that litigation and some of those, entity restructuring programs, it was about it impacted us in 2019 by about a point of op margin. So, essentially that's a benefit for us in 2020 and that's part of our expansion. But when we look at the expectations for 2020 and a comparison versus 2019, 19, we would expect margin expansion, whether using GAAP or non GAAP based on the leverage and the investments that we're making.
Our next question comes from the line of Brandon Couillard with Jefferies. Please proceed with your question.
Thanks. Good afternoon. Joe, I don't have a question about China. Actually, I want to talk about the U. Curious if you've seen any or just curious to get your latest views around just the competitive environment between DTC and then the office.
And also noticed you put Frank Quinn in a new role in terms of Head of the U. S. Curious about the rationale behind that and whether that's a reflection of a bigger focus on perhaps the DSO channel?
Brian, that's a good question. Actually, that's a good deep question. First of all, I mean, you saw our growth in the Americas for the Q4. It's good accelerating in the GP channel and good progress in the ortho channel. So obviously, I feel good about I talked about in the previous caller in the sense of the investments we've made in salespeople and advertising products and all that we have in those different channels.
And we look at that going forward, we feel good about that capability. From a DTC standpoint, I think we've always stuck with what we've said. I mean, we know that DTC will go after some of the same patients we do, but we haven't necessarily felt an impact in that sense. And you see us pushing hard in the sense of our product and portfolio to go after that. We talked about 100,000,000 patients that we think want treatment from an orthodontic standpoint in North America.
Other competitors, honestly, they're out there. I can't say that we've made any price moves against them. We haven't necessarily felt that we have lost any significant volume in any consistent way. And so I don't have anything different to report from that standpoint than I did the previous quarters that we've had a discussion. I think when you're hearing about that too, Brandon, it's what I think we've been consistent There's just so many things you got to be good at in this business from a logistics standpoint, but I'm not going to be able to There's just so many things you got to be good at in this business from a logistics standpoint, from a manufacturing standpoint, your digital platform, how it serves consumers and what it does with docs.
You got to be able to play really well on multi dimensions. And I'm not saying that there's none of our competitors will reach that. They're just not at that scale right now, but I think that it's made a tremendous difference to us in any way.
Thanks. And then the question about
I'm sorry. On Frank, I'm sorry, John, just remind you. On Frankie, look, Frank is a great commercial leader, right? I know he's associated with DSOs, and he helped to put us on the map of DSOs with his leadership. But overall, Frank, he came here with good external experience from a sales and dental standpoint.
He's really helped the business that way. And I thought he's a perfect pick for us to really help to, I'd say, to really help us not just extend what we do, but they'll put a lot of focus from a commercial standpoint in our business. So we're excited about Frank. He has a good relationship with Simon, who has great experience from Europe also and taking some best practices there and implementing him. And so we're excited about Frank and Simon and broadly the North American team.
The question about the Invisalign moderate. Any other feedback you can share on that rollout? Is an international launch in the works? And just curious about your thoughts in terms of whether you might see more trade up from Invisalign Light rather than more so than trade down perhaps from a more comprehensive case for those patients?
Yes. I think we haven't actually documented much trade up from light in that product line. It's most of it has been trade down from comprehensive. But remember, when you trade down on this product line, it still has a gross margin that's accretive to our business and not decretive in that sense. So we're allowing more choice for our patients, allowing more choice for our doctors, but we're not doing this to an extent that it really hurts our operating profit.
Super. Thank you. Thanks.
Thanks, Brandon.
Yes. See you, Brandon. Next question.
Our next question comes from the line of Jeff Johnson with Robert W. Baird. Please proceed with your question.
Hey, guys. Thanks. Good afternoon. Joe, I missed the prepared remarks, so I'll go back to the transcript on that. But just a question, one other on China.
And maybe you addressed it, but are you seeing any bleed outside of China, any of the tangential markets where patients are also hesitant to go to hospital settings, dental settings, dental office settings, things like that, any early indications of anything brewing like that?
No, Jeff, nothing like that so far. We haven't seen anything anywhere around the world in that sense. Hong Kong has been kind of locked down since the protest or whatever, so hard to get its signal out of there one way or another. But Taiwan, Korea, some of the neighboring countries, Southeast Asia, we haven't seen anything.
All right.
That's helpful. And then at GP Summit late last year, Joe, you made a big effort, I thought, to kind of at least put in people's head the idea of around $2,500 price point, dollars 3,000 price point, things like that. We've anecdotally been hearing some guys dropping their prices there to compete more against the DTCs. We did some survey work though and didn't find that at all. In fact, I think GPs and orthos both thought their price points that they charge patients going up over the next 12 24 months.
Just what are you hearing on a more consolidated basis? Are these docs willing to kind of go aggressively after this lower comprehensive or non comprehensive market and use some of your newer product to do that and really get after that 100,000,000 patient population in North America?
Yes. Jeff, it's funny. Yes, not funny, but it's really interesting. There's a lot of noise out there, right? And it's just your question is how do you pull signal from noise out of this whole thing.
And what we feel is obviously, there's a lot of doctors, both GPs and orthos. There is a segment, a significant segment of them that see really a clinical build, meaning you don't have to do a complete bite reconfiguration. You can responsibly move anterior teeth to give a good smile without having to move molars and other aspects of what's going on. Those doctors who see this progressive as, hey, maybe I'll fix the anterior teeth for a lower price and then move to a full bite correction at some point in time if the patient wants to go. We see both orthodontists and GPs a certain segment of them really engaging in that sense.
So we feel the confidence there's enough doctors out there that want to hit this kind of a price point, and we'll do it in a very efficient way. Some of them look at it doing with maybe 2 or 3 touches with the patient rather than constant touches every few weeks and using remote monitoring and those kind of things to see how patients are going. So we actually feel that we can that there are doctors out there with a limited product that will engage in that sense and be able to go after these, what we call, price sensitive DTC patients that are looking for just really in a steady correction, not a bite correction.
Yes, fair enough. Thank you.
Thanks, Jeff.
Thanks, Jeff.
Thanks, Jeff.
Our next question comes from the line of Steven Valiquette with Barclays. Please proceed with your question.
Great, thanks. Good afternoon. My China questions also
have been addressed. I'm going
to go non China for a moment. Just a question on the total ASPs. For the portion of ASP that was down sequentially due to the promotional discounts that you alluded to, Just curious some more color around that, whether that's related to maybe higher volumes being achieved by individual practitioners, kind of like what happened in mid-twenty 18 that nobody wants to relive if they can help it? Or is this perhaps related to maybe a greater mix of DSO business, maybe more discounts for groups, maybe less related individuals, just more color around the discount that you alluded to. Thanks.
Yes. I think Steve, as you look at it, we run promotions on a regular basis to be able to drive volume, drive behavior. We see a mix effect of that as well, where in Q3 there was maybe more ortho cases and in Q4 more proportionally GP cases. But as we said, as I've said really throughout 2019, we expected our ASPs to be relatively flat throughout the year, notwithstanding FX. And if we looked at where things were a year ago, we're up $5 And if you look at the FX impact of that, it was a negative $15 So, you're going to have puts and takes as you go through the quarters, but, we saw relative consistency throughout the year on our ASPs.
Okay. All right. Thanks.
Thanks, Steve. Next question, please.
Our next question comes from the line of Michael Ryskin with Bank of America. Please proceed with your question.
Yes, thanks. Same a lot of the China questions have been sort of fleshed out. I want to follow-up on Steve's question just now is
sort of how do
you think about that moving forward, the ASP component as we move through 2020? You highlighted some of the moving pieces you had in 2019 and historically and you've also got a shifting portfolio mix, shifting geographic mix, especially with some China events going on. Just want to get a sense of how you're thinking about both discount promotions, the Advantage program and the mix shift evolving over the next couple of years. So net net, how do you envision ASPs trending down?
Yes. It's a good question, Michael. I mean, you think of it just think of it separately for once and then we'll go together. So if you look at separately, if you look at the comprehensive product, relatively consistent. There's not going to from a promotion standpoint and everything else, you would expect consistency in those ASPs, same way from a non comprehensive product.
But when you see the interaction between the 2, as non comp grows faster, you could see, ASPs to be flat, to be slightly down as a result of that mix. And as we've said and as we saw in the Q4, where ASPs, even if it's at a lower ASP, it still comes with a higher gross margin. And we saw that in the Q4. We expect that going forward. So when we look to the future, ASPs, of course, get the headlines, but we're really focusing on driving that gross margin and operating margin.
Great. And quick one if I may as well on the scanner segment on that, Eteros, strong end to the year, but still sort of not nearly at the same pace you had early. And I realize part of that is the stack comps, but there's also been a lot of noise in the market with some other competitive entrants throughout 2019. Can you talk about anything you're seeing in Itero if it's tied to some of your DSOs where you sort of exhausted the pool of the installs that you had when you signed on board with them or if it's something from a competitive landscape you're seeing?
I still felt great about the growth. The iTero business for the year, right, is at 38%. And you're right, I mean, when you look at the capital equipment market in any medical business, right, the Q4 is usually the biggest one that people are looking at what they're going to do from a CapEx standpoint and they buy. So it was a tough comparison year over year, but still growing 20%. I think the best way to think about this, Michael, there's competition out there.
We feel really good about our digital platform that Itero represents, how it competes against any scanner really out there. And you see that it's doing well on restorative too as well as from an orthodontic standpoint. So we think we're really competitive. But as you I think back to your question is like how do you model that thing going forward. I think you model that at our 20% to 30% growth rates that we have given you for our business in general.
And that's what we've done through the many years we've had Itero so far is keeping that range. Sometimes we've been outside that range on the upside or whatever. But long term, you model it, think of 20% to 30% and a significant amount of that being some services revenue too that really helps in that.
Thanks, Mike. Next question, please.
Our next question comes from the line of Erin Wright with Credit Suisse. Please proceed with your question.
Great, thanks. Follow-up on Itero, I guess what's the early feedback on the 5 d scanner? And how should we think about the overall opportunity on that front? Thanks.
The doctor feedback, Erinn, it's Joe, on the 5 gs scanner has really been great. I mean, the ones that really use it to scan every patient when they come in, they're picking up caries or cavities at a rate that are almost 2x of what they can actually visually see or see through an x-ray. And that's driven a lot of new business through those docs. And so, a lot of this information comes in, I mean, obviously outside the United States because the FDA hasn't approved that yet. So we see this near infrared technology that we're being used to see cracks in teeth and caries in teeth as really helping from a cash flow standpoint from a doctor in the cases they're seeing.
And secondly, it's helping patients in that sense to be able to identify issues that you can get at a little more proactively before they really become an issue. As far as 5D in the United States, I think we've said that I'm never going to guess when the FDA says, yes, I've been in the Class II medical device business for too long. But our expectation is in sometime in the first half that we'll get 5 d approval through the FDA.
Next question comes from the line of Chris Cooley with Stephens. Please proceed with your question.
Thanks for squeezing me in and also thank you for taking a shot at China. I know that's a really fluid situation for you guys this evening. Just from my perspective, can we go back to 30,000 feet and just looking at the guidance for 2020 in terms of growth ex China, you're talking about towards the lower bound of the LRP plan there, so let's say 20% to 25%. Why wouldn't growth inflect higher after the deceleration and from 2018 to 2019, which is pretty meaningful? Could you maybe just help us parse out whether it's the challenging part of comps, if it's a difference in the consumer mix, competition.
Just want to try and understand why that wouldn't inflect back up with the strong volume growth that you're seeing globally here in 2018 2019 independent obviously of China? Thanks.
Yes, Chris, this is John. It's a good question. I mean, when we look at the investments that we're making, we invested to, as you said, that long term growth model where there's international expansion. We're going to continue to expand and grow into countries. We want to continue to grow our utilization, whether it's on the ortho side or the GP side.
We look at how we exited. We felt really good about 4th quarter, felt good about coming into this year. And but we want to make sure that as we invest and as we continue to grow, we can give you information that we see. And as we look at the year and as we look at our investments, this is the best information that we can get. Of course, as we invest, we always look for additional opportunities, whether it's growth in other markets, increased utilization and so on.
And those are things that we'll do. China gets a lot of the headlines now because of what's happening there, but the rest of our business is a good growth opportunity for us and we're making investments within those areas.
Thanks, Chris. We'll take one last question please, operator.
Our last question comes from the line of Ravi Misra from Berenberg Capital Markets. Please proceed with your question.
Hey, Ravi.
Maybe Robbie dropped off.
Robbie, your line is live. Are you on mute? Hi, how
are you?
Sorry, I was on mute. Two quick questions. Thanks for squeezing me in. Just on the balance sheet, both of them. Number 1, just inventory days have been creeping up throughout the year.
Historically, it's been a pretty good working capital business. Can you help me understand why that's the case and what's the kind of new normal expected there? And secondly, with almost $870,000,000 on the balance sheet, just in terms of capital allocation, maybe help us think about any changes to the current kind of philosophy of share repurchases? Thanks.
Hey, Ravi. This is John. I'll take the first one on Itero or the balance sheet with inventory. The majority of that increase is on the iTero side as we transition through products with Element 1 to Element 2 and then to 5 d. There's just some timing related to that.
But that as we start to sell more 5 d and as we increase our volume on Itero, that inventory will come down. On the Invisalign side, it's pretty consistent to what our growth has been.
Rob, on the cash on the balance sheet, obviously, this company is amazing cash generator in that way. I just want to reemphasize, Rob, we're not in the general dentistry business, so don't look at going out to broaden the portfolio in any particular way. We're building what we talked about when I closed about a digital platform and investing in that digital platform is where we're focused on. So when we have our Investor Day in May, we'll reapproach in a sense of the share buyback and what we think we'll be doing with that cash in the future.
Thanks, Robbie. Thanks, everyone. That concludes our conference call today. We appreciate you taking the time. As a reminder, we did send out information today to hold the date for our Investor Day in May, May 12 in New York City.
If you have any questions, please contact Investor Relations and have a great day.
Ladies and gentlemen, this concludes today's teleconference. Thank you for your participation. You may disconnect your lines at this time and have a wonderful day.