Good morning, ladies and gentlemen, and welcome to the Henry Schein Q4 2021 Earnings Conference Call. At this time, all participants are in a listen-only mode. Later, we will conduct a question and answer session and instructions will follow at the time. If anyone should require assistance during the call, please press star followed by zero on your touch tone keypad. As a reminder, this call is being recorded. I would now like to introduce your host for today's call, Graham Stanley, Henry Schein's Vice President of Investor Relations and Strategic Finance Project Officer. Please go ahead, sir.
Thank you, operator. My thanks to each of you for joining us to discuss Henry Schein's results for the 2021 Q4 and full year. With me on the call today are Stanley Bergman, Chairman of the Board and Chief Executive Officer of Henry Schein, Steven Paladino, Executive Vice President and Chief Financial Officer, and Ronald South, Vice President, Corporate Finance and Chief Accounting Officer, who will be assuming Steve's responsibilities as Chief Financial Officer at the end of April. Before we begin, I would like to state that certain comments made during this call will include information that is forward-looking. As you know, risks and uncertainties involved in the company's business may affect the matters referred to in forward-looking statements. As a result, the company's performance may materially differ from those expressed in or indicated by such forward-looking statements.
These forward-looking statements are qualified in their entirety by the cautionary statements contained in Henry Schein's filings with the Securities Exchange Commission, including in the Risk Factors section of those filings. In addition, all comments about the markets we serve, including end market growth rates and market share, are based upon the company's internal analyses and estimates. Our conference call remarks will include both GAAP and non-GAAP financial results. We believe the non-GAAP financial measures provide investors with useful supplemental information about the financial performance of our business, enable the comparison of financial results between periods where certain items may vary independently of business performance, and allow for greater transparency with respect to key metrics used by management in operating our business. These non-GAAP financial measures are presented solely for informational or comparative purposes and should not be regarded as a replacement for corresponding GAAP measures.
Reconciliations between GAAP and non-GAAP measures can be found in the supplemental information section of our investor relations website and in Exhibit B of today's press release, which is also available in the Investor Relations section of our website. Lastly, the content of this conference call contains time-sensitive information that is accurate only as of the date of the live broadcast, February 15, 2022. Henry Schein undertakes no obligation to revise or update any forward-looking statements to reflect events or circumstances after the date of this call. Please limit yourself to a single question and a follow-up during Q&A to allow as many listeners as possible to answer a question within the one hour we have allotted for this call. With that said, I would like to turn the call over to Stanley Bergman.
Thank you, Graham. Good morning, everyone, and of course, thank you for all joining us. Let me take this opportunity to thank Team Henry Schein for the team's extraordinary effort over the past two years. Despite the impact of the global COVID-19 pandemic, we are pleased to report excellent full year 2021 financial results, including an outstanding that exceeded our expectations. Our results were driven by strong internal sales growth in local currencies of 6.3% when excluding sales of personal protection equipment or PPE and COVID-19 related products, as well as prior year sales to Covetrus under the transition agreement, and acquisition growth of 4.3% while also reporting operating margin expansion of 30 basis points. We're pleased with our sales results, and we're pleased with our operating margin expansion.
We have updated our 2022 financial guidance based on this latest view of our businesses. Steven will provide additional details on that topic in a moment. We have also completed a strategic review recently of our businesses, and we're excited to recently present an updated 2022 to 2024 strategic plan to our board. We update our strategic plan generally every three years. The 2022 to 2024 strategic plan was very well received by our board. The updated guidance reflects the execution of two key strategic priorities contained in the strategic plan. First, continuous operational improvement in our distribution businesses, leading to exceptional customer experience and profit improvement.
This is complemented by increasing the overall contribution of our technology and value-added services businesses and our dental specialty products, which have, excuse me, higher sales growth and higher operating margins. Specifically, our technology and value-added services businesses and our dental specialties products businesses, together for the full year of 2021, achieved internal local currency sales growth of over 21%, combined with operating margin of 20%. Together, these products and services represented in 2021, 13% of our global revenue and about 36% of our full year operating income, with a combined sales run rate of over $1.7 billion and growing at low double digits.
Before I turn over the call actually to Steven, I would like to comment on an announcement that we made early last month. For the past 35 years, it has been my privilege to work alongside Steve Paladino. Steve joined the Henry Schein finance department in 1987 when the business was approximately $125 million in revenue, and has served as our CFO for the past 20 years. Steve has been a remarkable leader during the pre-IPO period, the period leading to the IPO, the IPO, and in the 27 years since. Steve led in a consistent and most credible way, balancing the needs of our constituents and resulting in 13% compound annual growth in stock price since the IPO's post-spin off of Covetrus.
In early January, we announced Steve's planned retirement from Henry Schein, which will be effective as of April 29. Of course, it's bittersweet to bid farewell to a colleague who has worked right down the hall for 3.5 decades. However, Steve will remain a member of our board of directors and will become an advisor to Henry Schein. All of us at Henry Schein wish Steve the best in his well-deserved retirement, but he's still going to be part of the company. We have a deep bench strength in our management team across the company. As Graham mentioned, on the finance side, Ron will be assuming Steve's responsibility as our new CFO. Ron has been our Vice President of Corporate Finance since 2008, and our Chief Accounting Officer since 2013.
Ron will be supported by Olga Timoshkina, who will be assuming the role of Chief Accounting Officer. Olga joined Henry Schein in September from EY, where she was a partner in accounting advisory services and has a deep technical accounting knowledge. We actually worked with Olga before when she was at EY. Ron and Olga are complemented by Graham, who has been with the company for almost two decades, having rotated through most of our businesses as the Business Chief Financial Officer. Of course, the rest of our outstanding finance team will continue to provide outstanding services. We are confident there will be a smooth transition from Steve to Ron. Ron is joining us on today's call. With that, I'll turn the call over to Steve to review our financial results and discuss our 2022 financial guidance.
Please, Steven, and thank you again for all you've done for the company, for all our team, and for our shareholders. Thank you.
Okay. Thank you very much, Stanley. Thank you for those kind words, and good morning to everyone. Before I review our financial results, as this will be my last more than 100 quarterly conference calls as CFO, I'd like to acknowledge the relationships I have built with so many of you in the investment community, our investors and analysts. I would also like to express my deep appreciation to the finance team here at Henry Schein and other colleagues with whom I have worked closely with over the years. While I'm looking forward to life's next chapter, it's those relationships that I will remember most. I thank you for those memories and for your friendships.
Now, turning to our review of financial results, I'd like to point out that I will be discussing our results from continuing operations as reported on a GAAP basis and also on a non-GAAP basis. Our Q4 non-GAAP results for 2021 and 2020 exclude certain items that are detailed in Exhibit B of today's press release, as well as in the Supplemental Information section of our investor relations website. Turning to our financial results, total net sales for the quarter ended December 25, 2021, were $3.3 billion, reflecting growth of 5.2% compared with the prior year. Internally generated sales were up 1.4% in local currencies, acquisition growth was 4.3%, and foreign exchange impacted sales growth by -0.5%.
Excluding sales of personal protective equipment or PPE and COVID-19 related products, as well as prior year sales to Covetrus under the transitional services agreement, our internal growth in local currencies was 6.3%. As you may recall, in 2020, prices for PPE products, and specifically gloves, increased due to some supply chain disruptions that we experienced. However, prices of those products, along with COVID-19 test kits, have since declined, and this pricing volatility is driving the negative year-over-year sales growth in PPE and COVID-related products. You can look at the details of our sales performance contained in Exhibit A of our press release that was issued earlier today. On a GAAP basis, operating margin for the of 2021 was 6.02%, representing an increase of 30 basis points compared with the prior year.
On a non-GAAP basis, operating margin of 6.16% for the Q4 of 2021 also expanded 30 basis points compared with the prior year. Operating margin expansion was driven by increased profitability in our dental specialty products and technology businesses, as well as lower inventory adjustments and improved customer supplier rebates. Sorry, improved supplier rebates. Turning to taxes, our reported GAAP effective tax rate for the Q4 of 2021 was 22.5%. This compares with 17.3% GAAP effective tax rate for the Q4 of 2020. On a non-GAAP basis, our effective tax rate for the Q4 of 2020 was 22.5%, compared with 17.5% for the quarter last year.
The lower effective tax rate for the Q4 last year in 2020 was favorably impacted by income tax resolutions both in the U.S. and internationally. Moving on. GAAP net income from continuing operations attributable to Henry Schein for the Q4 of 2021 was $147.2 million or 1.05 per diluted share. This compares with the prior year GAAP net income from continuing operations of $141.9 million or 0.99 per diluted share.
On a non-GAAP basis, net income from continuing operations for the Q4 of 2021 was $150.7 million or 1.07 per diluted share, and this compares with the non-GAAP net income from continuing operations of $143.6 million or 1 per diluted share for the Q4 of 2020. Our amortization from acquired intangible assets for Q4 2021 was $32.6 million pre-tax or 0.15 per diluted share. This compares with $25.3 million pre-tax or 0.11 per diluted share for the same period last year, and that excluded a non-cash impact, intangible asset impairment charge that was $18.1 million.
For the full year 2021, amortization from acquired intangible assets was $122.9 million pre-tax or $0.54 per diluted share, and this compares with the prior year that was $102.1 million pre-tax or $0.46 per diluted share. That also excluded the combined non-cash asset impairment charges in Q1 and Q4 of the prior year of $20.3 million. I'll note that foreign currency exchange positively impacted our Q4 2021 diluted EPS by approximately 0.5%. Let's now look at some of the details of our sales results for the Q4, starting with Global Dental, which had sales of $2 billion, an increase 9.4% compared with the same period last year, with internal sales growth of 6.4% in local currencies.
Global Dental consumable merchandise internal sales increased 6.6% in local currencies in the Q4 of 2021 compared with the prior year. Excluding sales of PPE and COVID-19 related products, internal sales growth in local currencies increased 7.4%. Our North American Dental internal sales growth in local currencies was 9.3% compared with Q4 of last year and was driven by solid growth both in our consumable merchandise as well as our equipment product categories. Our North American Dental consumable merchandise internal sales in local currencies increased 10.3% compared with Q4 of 2020 or 10.1%, again, when excluding sales of PPE and COVID related products. North American Dental equipment internal sales growth in local currencies was 6.6% compared with Q4 of 2020.
We had strong growth in our high-tech product offering, specifically CAD/CAM in the U.S., which received a boost from the DS World event, which we saw modest growth in traditional equipment, also, which remains impacted by manufacturing and office construction delays. International Dental internal sales growth in local currencies was 2.5% compared with Q4 2020, and we had really strong sales growth in the prior period with sales growth of 14.2% in Q4 2020 in local currencies. International dental consumable merchandise internal sales in local currencies increased 1.9% compared with Q4 of 2020 or 4% excluding sales of PPE and COVID related products. Again, as a reminder, Q4 2020, the prior year International Dental consumable merchandise sales growth was quite strong at 16.7% in local currencies.
International Dental equipment internal sales growth in local currencies was 4.2%, and it is also against a bit of a difficult comp in the prior year when the growth was 6.8%. If we look at our dental specialty products, sales of dental specialty products were approximately $244.8 million in the Q4, with internal growth of 15.1% in local currencies compared with the prior year. Growth was strong in each of our dental specialty categories, including oral surgery, which consists of implants and bone regeneration products, as well as endodontic and orthodontic products, with all three categories performing well globally.
For the full year of 2021, our dental specialty products were $928.6 million, with growth of 27.2% in local currencies over the prior year, and contributed $186.3 million to our operating income. Turning to Global Medical. Our Global Medical sales during Q4 of $1.1 billion was a decline of 3.2% compared with the same period in 2020. Internal sales growth in local currencies declined 7.1%.
Internal sales growth declined in North America 6.6%, and international sales declined also at 24% year-over-year. The medical sales decline was driven primarily by lower sales of PPE and COVID-related products, mainly COVID test kits. If we exclude the sales of the PPE and COVID test kits, our global medical internal sales growth in local currencies increased 3.6% compared with Q4 of 2020. I'll also note we sold approximately $185 million dollars of COVID test kits in the of 2021. That includes about $40 million in multi-assay flu and COVID-19 combination test kits, and this compares with approximately 270 million in test kits that were sold in Q4 of 2020. We expect continued volatility in sales of test kits in the upcoming quarters.
Now turning to technology and value-added services sales during Q4 were $177.2 million, an increase of 27.8% compared to the prior year, and that includes internal growth in local currencies of 13.4%. North American technology and value-added services internal sales growth was 12.6%. That growth was primarily driven by our revenue cycle and claims management revenue products. Internationally, the tech and value-added service internal sales increased 17.8% compared with the prior year, and this growth was driven primarily by strong sales in EMEA, including sales growth in the U.K., which benefited from a favorable comparison due to last year's prior year lockdown.
For the full year of 2021, technology and value-added services sales were $640.9 million, an increase of 24.6% compared with the prior year, and included internal growth of 13% in local currencies and had operating income of 125.6 million. We continued to repurchase common stock in the open market during the Q4, buying approximately two million shares at an average price of $75.50 per share for a total of 150 million. The impact of this repurchase on our Q4 diluted EPS was immaterial. For the full year, we spent $400 million to repurchase 5.5 million shares of our stock.
I'll note at the year-end, Henry Schein had approximately $200 million available for future stock repurchases. Turning to our balance sheet and cash flow, we continue to have access to significant liquidity, providing flexibility and financial stability. Our operating cash flow from continuing operations for the Q4 of 2021 was $276.6 million. That compares to $345.1 million for the Q4 of last year. This decrease in operating cash flow was attributable, primarily to increased inventory, including COVID-19 test kits, year-end investment inventory, and reserved stock due to delayed, lead times, from manufacturers.
For the full year, our operating cash flow from continuing operations was $709.6 , and that compares to 593.5 million in 2020, sorry. I will conclude my remarks by noting that we are updating our 2022 EPS guidance. The guidance is for GAAP EPS only. We are not providing non-GAAP EPS guidance for 2022, as we do not currently anticipate using non-GAAP financial measures for the year, although this decision could change in the future.
For 2022, we expect EPS attributable to Henry Schein will be in a range of $4.75-4.91, reflecting growth of 7%-10% compared with our 2021 GAAP diluted EPS of $4.45, and growth of 5%-9% when compared with our 2021 non-GAAP diluted EPS of $4.52. Our guidance for 2022 has a number of key assumptions. I'll review some of those. 2022 assumes that our total sales growth will be somewhere in the range of approximately 6%-8% over 2021, and that includes sales of COVID tests declining approximately 10% from 2021 levels that were approximately $650 million.
I'll also note that 2022 includes one extra selling week compared with 2021. This is our 53rd week year, and that occurs in the Q4 of 2022. For 2022, we are also expecting to achieve operating margin expansion. Our guidance assumes a range of 20-25 basis points over the 2021 non-GAAP operating margin of 7.06%, and operating margin expansion of 39-44 basis points compared to 2021 GAAP operating margin of 6.87%. Lastly, we expect the effective tax rate to stay in the 24% range, and of course, that assumes no significant changes in tax legislation.
Our guidance for 2022 diluted EPS is for continuing operations as well as completed or previously announced acquisitions, but does not include the impact of future share repurchases, future acquisitions or restructuring expenses, if any. Our guidance also assumes that foreign currency exchange rates are generally consistent with current levels, that end markets remain stable and are consistent with current market conditions, and there's really no material adverse market changes associated with COVID-19. Last, I'd like to note that we anticipate our Q1 EPS, Q1 of 2022 will be slightly lower to flat compared with the Q1 of 2021 non-GAAP EPS. This is due to really a very strong prior year and a difficult prior year comparison that we're seeing in Q1. With that, I'll turn the call over to Ronald South.
Thank you, Steve, and it's great to be speaking with all of you this morning. I'm honored and excited to be stepping into the role as Henry Schein CFO. I've worked closely with Steve for more than a dozen years, and I'm looking forward to working with Olga, Graham, and the entire Henry Schein global finance team. To underscore what Stanley said, I expect a smooth transition into my new position. Steve has been a tremendous steward of Henry Schein's finances during several decades of impressive growth and expansion. I look forward to continuing his legacy of transparency. Turn the call back to Stanley.
Thank you, Ron. Congratulations on your well-deserved promotion. You are truly respected by our entire management team at Henry Schein, and thank you for your service. Of course, I thank Graham as well for his new role and for his service, and in fact, the entire finance team. In September of 2021, we announced a new leadership structure associated with what we internally refer to as One Distribution. Our One Distribution strategy contemplates a North American dental and medical distribution leadership under the leadership of Brad Connett, a 25-year veteran of Henry Schein. Our international distribution businesses are being led correspondingly by Andrea Albertini, an exceptional healthcare executive who joined our team nine years ago.
As noted earlier, One Distribution is part of Henry Schein's commitment to continuous operational improvement in our distribution businesses, leading to exceptional customer experience or building on our exceptional customer experience and, of course, profit improvement. Turning now to our most recent accomplishments in our distribution businesses, let me start with dental. dental revenue growth was solid. In North America, we are especially pleased with the growth in dental consumable merchandise sales, with strong internal growth in local currencies with and without sales of PPE and COVID-19 related products. The growth reflects the impact of some modest price increases as well as the contribution from two large DSO contracts awarded in 2021. We expect additional price increases from suppliers. Patient traffic held quite well in December.
However, we believe there was a decline in January resulting from higher patient appointment cancellations and dental staff shortages due to absenteeism. We consider our Dentrix insurance claims data as a good proxy for U.S. patient traffic, and in January, we saw a modest decline compared to 2021. This is consistent with our January average sales volumes. Our view is that while there may be some postponed office visits as a result of the Omicron variant, we expect the market to be stable. Any impact is likely to be temporary in our view, and that most canceled appointments will be rescheduled. We have factored these movements into our financial guidance, and the first couple of weeks of February have shown that there is resiliency in this dental market in the United States.
Of course, the international market is a little bit varied, but generally, quite consistent with the trends we've experienced in North America. We have experienced some supply chain disruption to our merchandise business, like everyone, and while we may not always have every brand in every size for all products, we generally have substitutes available. We have increased our safety stock for some items, and we are leveraging our global supply chain partners to mitigate delays and expedite our shipments where possible. We have very good logistics partners as well, I might add. During the Q4, we continued to experience some delivery and installation delays in the U.S. traditional dental equipment business, as we had expected.
These were caused by a combination of component shortages with our suppliers and construction delays, which we expect to continue through the second half of this year. We also experienced, for the first time, some modest delays in the delivery of digital imaging units, which we expect to last a quarter or so. Sales of intraoral scan equipment was particularly strong again this quarter. In the Q4, we had a bit of tailwind from the DS World, positive support from that meeting, as we discussed during our last call. We remain bullish on the equipment market, especially about the future of digital dentistry, as we believe the market remains under-penetrated.
We expect to continue to see good growth in the digital category, including digital imaging, intraoral scanners, and digital 3D printing, offset in part by what we believe may be lower ASPs for some new products. In our international dental business in Q4 , we had very strong sales growth in the U.K., driven by a recovery from last year, and in Brazil, where we have seen some accelerated consolidation within the dental distribution industry, as well as good growth in Italy, Spain, Eastern Europe, and Australia. Our global equipment business is performing very well overall as we believe dental offices continue to invest in their businesses, and we have expanded our Brazilian equipment business as well. At this time, we have a strong underlying global equipment order book, and that is throughout our business domestically and globally.
Now, turning to our medical business. We have continued to gain new customers while achieving deeper penetration among existing accounts. Internal sales in local currencies for the declined against a tough prior year comparison that was extremely strong because of PPE and COVID-19 related products. Yet, as Steven mentioned, when normalizing for sales of these products, growth was a solid 3.6%. Patient traffic to physician offices and alternate care sites were all positive during the Q4. While early in the quarter, patient traffic was generally improving and trending towards more normalized levels, late in Q4 , we saw patients deferring some elective procedures, which we believe will be temporary. We expect demand for COVID-19 related testing products will continue to be choppy as the Omicron variant runs its course. We are currently seeing a surge in demand for COVID-19 testing.
However, there are also production challenges and some suppliers with some suppliers leading to some rationing. However, demand is good and we have product. In addition, we expect pricing for COVID-19 tests, as Steven noted, to remain volatile. We are optimistic about the future. In fact, I would say highly optimistic about the future of our medical group as procedures continue to migrate to the alternate care settings and as the current COVID wave continues to decline. We believe the use of PPE products for both dental and medical practitioners will remain at elevated levels for the foreseeable future, with glove pricing to continue to decline modestly. These factors are all reflected in our financial guidance. Now, turning to our dental specialties and technology and value-added services product offerings, we are really excited about these various businesses and product offerings.
As mentioned earlier, sales of our dental specialties products performed extremely well during 2021. Under the seasoned leadership of Rene Willi, Chief Executive Officer of our Global Oral Reconstruction Group, which includes oral surgery products, and David Brous, Chief Executive Officer of our Strategic Business Groups. David is also, by the way, a partner to Andrea Albertini in our international distribution businesses. David's businesses include endodontics, orthodontics, and other specialty products and services. David had previously led our M&A function as well as a number of businesses, both domestically and internationally. Our solid position in the oral surgery market, consisting of implants and bone regeneration products, as well as in endodontics and orthodontics products, is built on a strong customer offering in our specialties.
We believe it's a deep offering and a commitment. Actually, it's a continued commitment to invest in research and development. Our growth is fueled by new product launches and the strengthening of the market for restorative dental solutions. Turning to our technology and value-added services business, Henry Schein One, the largest contributor to sales in this segment, once again posted record high quarterly revenue. Growth within Henry Schein One continues to be driven primarily by recovery in patient traffic to dental offices, which generates demand for our revenue cycle management solutions, plus new products. We have also been adding new talent to the Henry Schein One team, including Mike Baird as the CEO of this business, who joined us about 1.5 years ago to lead Henry Schein One. Mike has a deep background in technology.
We continue to focus on the migration to the cloud and on cloud-based solutions to create flexible, scalable services to drive practice efficiency and patient engagement, and moving to a SaaS model, as we've discussed in the past, resulting in more stable recurring revenue, and those streams are, of course, welcome. We are seeing good growth in both the Ascend and the Dentally cloud-based practice management system, which now have more than 4,000 customers globally. We believe we have the largest installed base of cloud-based systems, which we continue to expect to grow in the dental arena. We are also executing well for our large customers, and most recently, we're pleased that our partnership with Leidos led to the installation of Dentrix into Brooke Army Medical Center, one of the U.S. Army's premier medical centers.
This is part of a global program with the U.S. military to install our dental software, our Dentrix software systems. Henry Schein is also working with several customers to collaborate on building next-generation innovative digital and clinical solutions. The first of several 510K applications to uniquely embed computer vision AI technology into Henry Schein's flagship practice management software, Dentrix and Ascend, has been filed with the FDA. These applications will create valuable and powerful workflows combining practice management software, imaging, and AI insights to assist dental professionals in diagnosing dental treatment and automating the construction of appropriate treatment plans. This is very exciting.
The final topic I'd like to draw the attention of our investors to is our continuous commitment to M&A strategy led by Mark Mlotek, who has been leading strategy and M&A for Henry Schein for 27+ years. Mark is our Executive Vice President and Chief Strategic Officer, and is supported by Scott Saunders, our VP Global M&A and Business Development, also a longtime Henry Schein veteran. M&A remains an important part of our growth and capital allocation strategy. During 2021, we completed several acquisitions across our business units, representing annualized sales of over $560 million and capital deployment of 557 million.
These acquisitions were primarily focused on broadening our technology and value-added solutions, servicing the ambulatory surgery market, expanding our presence in the home health market, and supporting our own brand strategy. Of course, we will continue to seek additional investment opportunities in the specialty product, specialty and services areas. With these comments and a review of our and full-year financial results, I would like to open the call to your questions. Operator, please.
Thank you so much. The floor is now open for questions. I would like to inform everyone in order to ask a question, you may press star one on your telephone keypad. We'll pause for just a moment to compile the Q&A roster. Your first question comes from the line of Matt Miksic from Credit Suisse. Your line is open.
Hi, thanks so much for taking the questions. Congrats on a really strong finish to 2021. Just a couple of questions, if I could, on the guidance first. If you could talk a little bit about, you know, the impact, how to quantify perhaps the impact of the extra week in Q4, as we sort of bake that into the cadence of growth for the year. And then, your comments around Q1 in January, it sounds like, if you could maybe just run through the sequential commentary that you made one more time to be clear. It sounded like you were seeing some pressure in January with resilience in February, but then it also seemed like some of that sequential movement was relatively consistent with your historical experience from Q4 to Q1. Maybe just clarification on those two points. Thanks so much.
Thank you for the question. I'll ask Steven to respond to those. Before I do that, I somehow glossed over. I don't know why I missed this in the script, but Brad Connett, a 25-year veteran of Henry Schein, runs our North American distribution businesses. That's dental and medical, all pursuant to our August 2021 reorganization. I have no idea where I missed that, but good people are checking on what I say. Steven, please. Hello? Steven?
Yeah, sorry, I was on mute, didn't wanna make noise. I'm back. First on the extra week. You know, the extra week is probably one of our slowest weeks of the year because it's the last week of the year, so it's the holiday week. You know, we generally see a lot of practices and customers even slow that week or close that week. It's not a normal week. It's a very slow week for us. All of that, though, is incorporated into our guidance range of 6%-8% of sales growth in 2022 over 2021.
Remember, that sales growth is all in, so it includes acquisitions that occurred in 2021 that you now have the full year impact of, but it does not include any new acquisitions that we may do in the year. So it's baked into that 6%-8% number, and again, it's a slow week on January sales performance, so what we've said and what we believe is that, yes, we did see first in Q4 some modest impact of the Omicron variant impacting our customers. That continued and probably accelerated slightly into January.
We saw more patient appointment cancellations and rescheduling of patients really because even staff of dental practices were impacted by the Omicron and were closed for some absenteeism. As Stanley said, as we exited January, we started to see a pickup of sales just modestly again. We do believe that those sales, the sales impact is temporary, caused by cancellations of payments, but they will be rescheduled, and we're not expecting that to be a long-term negative impact. Similarly, in Medical, we did see some elective procedures canceled in some of our customers in January. Again, we do believe that to be temporary. It's primarily impacting ambulatory surgery centers.
It didn't have a significant impact on our business, but we also believe that, you know, that will reaccelerate and is a temporary impact. We're trying to be less aggressive on sales. We're trying to be a little bit conservative on PPE and test kits. As we said on the prepared remarks, we're assuming approximately 10% lower sales of test kits for the year. We also have assumptions on PPE with lower average selling prices built in there. So hopefully that's, that helps you on some of the sales numbers, Matt.
That's great. Thank you.
Your next question comes from the line of Jeff Johnson from Baird. Your line is open.
Thank you. Good morning, all. Steve, just wanna say thanks for all the guidance and insight. I think it's been almost 20 years you and I have known each other, so that will be missed, and congrats on the retirement. Let me ask a two-part question, I guess, on gross margin. The first part just, you know, what's the algorithm for the 20-25 basis points of operating margin expansion this year? Is it hold gross margin and leverage operating expense, you know, in 2022 and going forward? Can we expect any kind of gross margin improvement off these levels? Just thinking more on the gross line rather than operating margin. Any updates there you can provide?
Sure. Thanks for the kind words, Jeff. I have enjoyed you know, building a relationship with you and all those difficult questions that you typically ask. We do expect in our guidance that we might see a little bit you know, some modest gross margin expansion over 2021. Again, that's driven primarily by shift to higher margin products. We don't expect a major change in gross margin, either flat to slightly modest increase. You know, we really do expect that the margin expansion will come from leveraging expenses primarily, as well as again, shifting towards higher margin products and impacting it on the operating margin side. That's the way we built our budget for 2022.
Yeah. All right. That's helpful. Maybe one follow-up just on that margin comment. You know, it can specialty and technology and value add, can that hold kind of the 20% operating margin leverage going forward? When I think about double-digit growth for those two businesses, it seems like each year that should throw out kinda, you know, 10-20 basis points of operating margin improvement right there. Is the algorithm then kinda hold margin in the rest of the business and get the margin benefit of that mix shift to those higher margin products? Is that kind of the other way to think about the algorithm? Just again, can those businesses hold that 20% margin? Thanks.
Yeah. I would say, you know, we haven't given that level of specifics, but remember, we also wanna invest in those businesses, so there may be some additional investment. I would say generally speaking, that the margin should, you know, generally hold, in both the technology and the dental specialties. Obviously, if we did acquisitions in either of those areas, that could change the mix. I think it's generally should hold, and again, that's helping on overall margin as those businesses grow faster than the core business.
Thank you.
Okay. Thanks, Jeff.
Your next question comes from the line of Nathan Rich from Goldman Sachs. Your line is open.
Hi. Good morning. Thanks for the questions. Maybe just following up on the margin guidance. You know, you talked about the restructuring that you went through last year. Is there a way to quantify the savings that you're expecting to show up this year? And then how should we think about the impact of price increases and inflation both to top line and margins this year?
Sure. I'll take the last part of your question first since it's a little bit easier. The inflation really should not have any significant impact on margins because really what we're trying to do is maintain margins with the price increases that we've seen and we expect to continue to see. So there's really not a margin per se opportunity, although there is a gross profit dollar, slight opportunity because if the margin, same margin on a slightly higher selling price will add to that. So I think that that's not really driving it. It's driving dollars but not margin. What was the second part of your question, Nathan?
Just the savings from the restructuring.
Yeah, no, the restructuring that we completed in 2021 really wasn't all that significant. Just trying to pull out the number. For the year, it was $7.9 million. Typically our restructuring has a 12- to 18-month payback, so the impact, you know, something less than that $7.9 million. Remember, some of the reasons for doing the restructuring is for us to also free up dollars to continue to invest for future growth.
Okay. Makes sense. Then if I could just ask a follow-up on the two DSO contracts that you referenced. Obviously, it seems like you saw a nice contribution in the . You know, I'd imagine there's some incremental benefit before those annualize. But could you maybe just talk about sort of the scope of those, and are there any other RFPs or potential contracts that are up for renewal over the upcoming year that we should have in mind? Thank you.
Sure. Yeah. The two large DSO contracts that were awarded during 2021, you know, we now have onboarded those customers, so those are flowing through our sales numbers in Q4. We still should have an annualized impact in 2022, but much more modest, because we've been seeing a lot of those sales already in 2021. You know, with respect to DSO contracts, you know, we probably always have one or two every year that is coming up for renewal. You know, we don't have them all bunched up in one particular year like we did many years ago. We feel very good with our relationships with DSO customers. We feel like we serve them really well. Our pricing is very sharp. We feel good about the renewals.
There's always one or two every year.
Thank you.
Okay.
Your next question comes from the line of Jonathan Kaufman from William Blair. Your line is open.
Hi. Thanks very much. Steve, what I'd really like to ask you is for your sort of favorite Henry Schein anecdote, but that's probably not appropriate for this call. Maybe instead, I wanted to ask about the technology and value-added services. It seems like the growth you reported in the quarter is a lot higher than normal. Can you just talk about what drove that, and what's the sort of sustainable level of growth you guys are shooting for from that segment?
Yeah. You know, again, you know, technology especially, with services that are based on patient traffic, was impacted, and was slower to return to, you know, pre-COVID levels. So we're seeing a nice impact from that. You know, you know, we haven't really given specific guidance, but certainly we would like to see that segment, you know, be a double-digit top-line grower and hopefully slightly greater than that because of, you know, margin opportunity. You know, so we feel good about that business. Now, the only thing is I would caution that double-digit sales assumes no major shift, to a SaaS model where, I think everyone knows that in a SaaS model, you record revenue every month, so it's an annuity, which is good for the company.
If you compare it to a non-SaaS model where you have the sales all up front, it does impact overall sales growth. Should that become material, I'm sure we could call that out for investors, but right now it's not that material.
Great. Thank you. Stan-
Stanley, let me just add a little bit more to that. First of all, my favorite story is when we were on the road with a William Blair salesperson who said, "Stanley, you talk too much. Listen to Steven and speak less." Just wanna point out that for the specialty products and technology products, we, you know, are investing heavily in R&D in these areas and have good results, whether it's in the endo, the orthodontic, dental surgery or in fact the whole Henry Schein One area. Many I'm looking at a list at Henry Schein One of seven or eight significant new product launches in the last two or so quarters. These businesses are going to drive even higher margin in the future.
We can't say exactly well when, because there's still a lot of investment going on. They are in the end driving operating income, but we expect for that to grow over time as this new development, these R&D projects materialize.
Thanks, Stan. One quick follow-up. We hear broadly that dentists and doctors practices are really struggling with staffing themselves. You know, from your perspective, do you guys have an offering maybe within the technology business to sort of help lessen that strain that your customers are facing right now?
Yeah. Your observation, by the way, is correct. I think it's particularly acute in the DSO world. I can see light at the end of the tunnel. We have two areas of support for our customers. One is Henry Schein One does help with identifying office managers and helping to train the office managers, et cetera, et cetera. We do have a staffing business. It's relatively small, but this is in our services, value-added services business, and we are investing heavily in that area to advance it.
Your next question comes from the line of Jason Bednar from Piper Sandler. Your line is open.
Hey, good morning. Congrats on a nice finish to the year. Steve, all the best to you. Hope you enjoy your current retirement to its fullest here. You talked about price increases that have already been contemplated, those that are still coming this quarter and maybe even others that you have insight into later this year. I guess I'd be curious if these are manufacturers pushing through multiple price increases in the year or if these are just different manufacturers that have some varied timing for implementing their price increases. Just what's been the response from the dental community? Are your customers pushing back at all in any way? How are those conversations being handled, and are you seeing any substitution or trade-down in response to the price increases?
Yeah, maybe I'll kick off. You know, I think that the bulk of the price increases that we were expecting have come through already. You know, there may be a few manufacturers who have done more than one price increase, but the bulk have come through. If inflation continues at this rate, I guess it's possible that more could come through going forward. From a customer perspective, look, there's always, whenever prices go up, there's always a little bit of pushback, but I think customers understand that we're in a highly inflationary environment. It's not just us that are raising prices, it's really across the board. I think that helps that people have awareness of inflation going on.
There's always a little pushback, but it's certainly very manageable and we think that we'll be successful in passing through those price increases. Even though it's unfortunate, we'd prefer not to, but you know, we're getting price increases, so we just kinda have to pass it through to the end user.
Thank you, Steve. There's also a little bit of deflation occurring in some of the commodities, obviously in the PPE area, quite substantial. Some of the other commodities, there is an opportunity to consolidate purchasing power on behalf of our customers, so we're getting support in that area. I would say in the digital dentistry area, 3D imaging has come down in pricing and it's making it more affordable to the general dentist. The whole scanner world is also coming down in pricing, which ultimately I think will lead to standard of use. We're not there yet, a lot of practices don't have it, but I think there's gonna be more units going out to general dentists in the scanner world.
We have many options, including some of our major suppliers today are advising that they're gonna come out with more competitive offerings in future. I think it's not as bad as you read in the newspapers, but we are in an inflationary period for sure, on our payroll as well. We have to balance all of this to ensure that we, in the end, do the right thing for all the constituents, including Henry Schein and our investors. I believe our management team is doing a great job in this area.
All right. Very helpful. Just as a quick follow-up on capital allocation, really maybe more a question for Ron. You know, Ron, in our conversations, I've gotten the sense that your views are very much aligned with what we've seen from how Henry Schein has operated historically and how Steve's managed the financials during his tenure. There's a lot of capacity on the balance sheet. I guess it'd just be helpful to hear your philosophy regarding leverage and how you see the balance of M&A and share repo moving forward. Thanks.
Sure. You know, I mean, it's kinda every CFO's challenge to try to find that optimal, you know, capital allocation. I do think that, you know, Steve is allowing me to inherit a very strong balance sheet, and it does give us some flexibility to be opportunistic on M&A going forward. It just has to be the right opportunity. In the meantime, we'll continue to kind of follow , you know, what we've done historically with some share buybacks, some reinvestment in the business. As we see the opportunistic M&A come up, we wanna be able to move on it. We have a balance sheet that gives us a lot of flexibility there.
Great. Thank you.
We have time for one last question coming from the line of Elizabeth Anderson from Evercore ISI. Your line is open.
Hi, guys. Thanks so much. Steve, it's obviously been great, so congratulations on your retirement. Maybe from a question perspective, one thing that obviously caught my attention was sort of when you were talking about the lower average sales pricing in terms of the equipment side. Could you go into a little bit more detail about what's driving that? Is it sort of a new product suite? Is it people switching from, you know, complete chairside solutions to just intraoral scanners? Any additional details there would be super helpful. Thanks.
Yeah. I think on the equipment side, the demand for digital dentistry has created a lot of interesting new products being introduced, and expansion by some of the existing suppliers are saying there are markets that we're not penetrating and are advancing ideas in more affordable scanners. At the same time, those that have had 2D imaging machines can now upgrade to 3D at a relatively low price. That sale is a unit. You take all of this, the drive towards digital dentistry.
To some extent, not fully, is similar to what you may have experienced in the calculator or in the PC world. Greater demand, more efficiency, and movement towards standard of care when it comes to 3D imaging, scanners. I might add right away, and please take into account, the whole area of 3D printing is now emerging and is also becoming much more affordable. We expect all of this stuff to balance and result in greater demand and greater sales and profits for the digitalization of dentistry. For Henry Schein, that ties in in an interoperable way with Henry Schein One. This is all a very exciting period for us. A lot of movement, a lot of excitement, and dentists are awakening to the importance of digitalization in dentistry. More to follow.
It's a key component of our strategic plan, but we just don't have time to talk all about all of that today, so.....
That makes sense. Maybe just as a quick follow-up on the implant side, a number of the major implant manufacturers have announced new products or sort of revamped or future revamps that are coming to their product portfolio. I was just wondering if you could comment on sort of demand in that environment and the relative, you know, competitive levels there, and sort of pricing as well, if that's sort of providing a unique opportunity for you.
Yes. On the implants in particular, and of course, we also have a very nice business in bone regeneration products. On implants, we have a premier line, a couple of premier lines, namely Camlog and BioHorizons. We also have Medentis in the discount area, or I wouldn't say discount, but lower priced. Our products tend to be more on, again, on the premium side, but relatively lower price. Camlog has had significant new product offerings over the years. Last year, I mean, the Camlog CONELOG PROGRESSIVE-LINE has done quite well. The Tapered Pro, another area, has done well. The Fusion line and then the NovoMatrix on the biomaterial side. Lots of new developments. We actually believe we have a pretty comprehensive, competitive offering in the implant, the oral surgery line.
Likewise, I think on the endodontics and orthodontics side. I'm happy next time we have a call or should you want specific details. I'm happy for you to reach out to Investor Relations. Unfortunately, we don't have more time now, but we are very excited about our specialty products and our Henry Schein One and other value-added services.
Thanks. That was helpful.
Graham, I know I can talk for hours, even not for hours, minutes. Lots of information to share.
I think we're at the end, right, Graham?
That was our last question, so we can conclude now.
Okay. Again, Steven, all the best officially, but we know you'll be guiding us for years to come, be involved with our team. Ron views you as a mentor and so do our, all our senior executives. I value our relationship, and so we will continue the relationship and your advice to Henry Schein's board and to our management team. Thank you for everything. Thank you to all our investors. Sorry we went over a little bit today. If anybody has any questions, please reach out to Graham, our investor relations, who can put you in touch with Steven or Ronald South. Thank you all for calling in. We look forward to seeing you, to speaking to you in the early May meeting call. We'll be participating in a few investor conferences coming up.
As perhaps you can understand from the tone of this call, we're very, very excited about the company. We're very excited about our 2022-2023 strategic plan and the execution of that. Thank you all for calling and stay safe.
This concludes today's conference call. Thank you all for joining. You may now disconnect.