The hygiene department is often the profit engine of a dental practice. Hygiene production, efficiency, and team stability significantly impact practice profitability and cash flow. Yet many practice buyers don’t evaluate hygiene production thoroughly before closing. Over 30 years of dental consulting and practice acquisitions, I’ve observed that practices with declining hygiene production or unstable hygiene teams often disappoint new owners. This guide walks you through evaluating hygiene production systematically so you understand what you’re acquiring.
Hygiene evaluation requires understanding three dimensions: production metrics (how much revenue the hygiene department generates), efficiency metrics (how productively hygienists work), and team stability (whether hygienists will stay post-closing). Missing any of these dimensions leaves you vulnerable to post-closing surprises.
Understanding Hygiene Metrics and Terminology
Before evaluating a practice’s hygiene department, understand the key metrics used to measure hygiene performance.
Annual Hygiene Production
Annual hygiene production is the total revenue generated by all hygiene services annually. This includes prophylaxis (cleanings), therapeutic scaling, fluoride treatments, sealants, periodontal therapy, and other hygiene services.
Ask the seller: “What is your annual hygiene production?” You should get a dollar figure. If the seller can’t tell you this, that’s a red flag indicating poor financial tracking.
For a typical general practice, hygiene production is 30 to 45 percent of total production. Practices with strong hygiene departments generate 45 to 55 percent from hygiene.
Daily Hygiene Production
Daily hygiene production tells you what hygienists generate on an average working day. If total hygiene production is $350,000 annually, and the practice is open 250 working days per year, daily hygiene production is approximately $1,400 per day.
Ask: “What’s your average daily hygiene production?” This helps you understand productive capacity.
Production Per Hygienist
Production per hygienist shows average productivity of each hygienist. If the practice generates $350,000 in hygiene production with two full-time hygienists, that’s $175,000 per hygienist annually.
For full-time hygienists, typical annual production ranges from $140,000 to $200,000 depending on case mix, appointment length, and patient population. Practices in affluent areas with cosmetic-oriented patients and longer appointments might have lower per-hygienist production (more comprehensive care, more periodontal therapy). High-volume clinics might have higher production.
Ask: “What’s the annual production for each of your hygienists?” You should get individual numbers or be able to calculate them from total production and number of hygienists.
Operatory Utilization
Operatory utilization measures how much of available operatory time is scheduled and productive. A practice with three hygiene operatories open eight hours per day has 24 operatory hours available daily. If they’re booking 18 operatory hours, that’s 75 percent utilization.
Ask: “What’s your hygiene operatory utilization?” or “How many hygiene operatory hours are you scheduling daily?”
Healthy practices typically have 70 to 85 percent operatory utilization. Higher utilization can indicate a fully booked schedule or overtime. Lower utilization indicates either underbooking or scheduling inefficiency.
Patient Recall Compliance
Recall compliance measures what percentage of patients who need periodic cleaning appointments actually book and complete them. If the practice has 800 active patients and 600 complete their last recall appointment, recall compliance is 75 percent.
Ask: “What percentage of your patients complete their periodic recalls?” or “How many patients miss recalls?”
Healthy practices typically have 70 to 80 percent recall compliance. Higher compliance indicates good patient relationships and effective recall systems. Lower compliance indicates patient satisfaction issues or recall system problems.
Recare Intervals and Patient Distribution
Understanding what percentage of patients are on three-month recall versus six-month versus annual intervals helps you understand the case mix. A practice with many patients on three-month recall (due to periodontal disease) will have higher overall recall volume than one where most patients are on annual exams.
Ask: “What percentage of your patients are on three-month, six-month, and annual recall?”
New Patient Prophylaxis Rate
Many practices track what percentage of new patients complete their initial cleaning and exam. This indicates whether new patients stay and accept initial recommended care.
Ask: “What percentage of new patients complete their initial prophylaxis appointment?”
Evaluating Hygiene Productivity and Efficiency
Beyond production dollars, evaluate whether hygiene is productive and efficient.
Scheduling Efficiency
Visit the practice and observe hygiene scheduling. Are operatories booked back-to-back, or are there gaps? Are appointments running on time, or is there delay between patients?
Gaps in scheduling indicate either underbooking or scheduling inefficiency. Some gaps (5 to 10 minutes between patients for setup and cleanup) are normal. Large gaps (30-minute gaps between scheduled patients) indicate underbooking or inefficient scheduling.
Ask: “How do you schedule hygiene appointments? Are you doing back-to-back scheduling or leaving gaps?” and “How does your actual schedule compare to your ideal schedule?”
Appointment Length
Hygiene appointment length affects production. A practice scheduling 45-minute appointments produces less per operatory than one scheduling 60-minute appointments and fully booking operatories.
There’s no right appointment length; it depends on patient population and case mix. Long appointments might reflect more comprehensive care (fuller exams, more patient education, more periodontal work). Short appointments might reflect high-volume production.
Ask: “What’s your standard hygiene appointment length?” and “Why did you choose that length?”
Production Per Appointment
Production per appointment (annual production divided by number of hygiene appointments annually) shows the average revenue per appointment.
If hygiene production is $350,000 and hygienists complete 1,000 hygiene appointments annually, that’s $350 per appointment.
For typical prophylaxis appointments, production ranges from $250 to $400 depending on case mix and service offerings. Higher production per appointment often indicates added services (periodontal therapy, fluoride, sealants, additional exams).
Ask: “How many hygiene appointments do you complete monthly or annually?” and “What services do hygiene appointments typically include?”
Operatory Equipment and Supplies
Observe hygiene operatories. Are they well-equipped with current technology? Do hygienists have access to what they need? Are supplies organized and available?
Practices with outdated or poorly maintained hygiene operatories tend to have lower productivity because hygienists waste time dealing with equipment issues or searching for supplies.
Ask: “When was the last time you updated hygiene operatory equipment?” and “Are you happy with the equipment and setup?”
Evaluating Hygiene Team Stability
Hygiene team stability significantly affects practice success post-closing. Losing experienced hygienists disrupts operations and profitability.
Tenure and Turnover
Ask about each hygienist’s tenure at the practice. Hygienists who’ve been with the practice five to ten years are usually stable team members with established patient relationships. High turnover (hygienists lasting only one to two years) indicates team problems.
Ask: “How long has each hygienist been with you?” and “Have you had turnover? Why did previous hygienists leave?”
Plans to Stay Post-Closing
The critical question is whether hygienists will stay when new ownership takes over. Many practices lose hygienists post-closing if they had strong personal relationships with the departing owner.
Ask hygienists directly (if you get a chance): “Will you continue working here after new ownership?” and “What would cause you to leave?”
Ask the current owner: “Do you think your hygienists will stay with new ownership?” A candid current owner will tell you if any hygienists are likely to leave.
Compensation and Benefits
Understanding hygiene compensation helps you anticipate post-closing costs and whether compensation is competitive.
Ask: “What is each hygienist’s compensation?” This might be hourly rate, salary, or production-based compensation. Understand the total compensation package (salary, benefits, continuing education allowance, retirement contributions).
Compare to market rates in your area. If hygiene compensation is significantly below market, you might face recruitment challenges post-closing or need to increase compensation.
Job Satisfaction and Morale
Observe hygiene team morale during your visits. Do hygienists seem satisfied and engaged? Are there visible tensions? Do they seem to enjoy working together?
Ask team members directly about what they like and what frustrates them.
Low morale is a red flag. Unhappy hygienists are more likely to leave post-closing, and their unhappiness affects patient care quality.
Patient Relationships
In many practices, hygiene patients have strong relationships with specific hygienists. They book with that hygienist intentionally. When that hygienist leaves, some patients leave.
Ask: “Are patients flexible about which hygienist they see, or do they prefer specific hygienists?” If patients prefer specific hygienists and those hygienists leave, you’ll lose patients.
Evaluating Hygiene Quality and Clinical Standards
Productivity alone doesn’t tell the full story. You also want to understand hygiene quality.
Charting and Documentation
Review a sample of hygiene charts. Are they complete and detailed? Do they show periodontal probing depths, furcation involvement, clinical observations? Or are they minimal documentation?
Complete charting indicates thorough exams and quality clinical care. Minimal charting might indicate speed over thoroughness.
Ask: “What does your hygiene charting process look like?” and “How detailed are your treatment notes?”
Radiograph Protocols
Ask about radiographic protocols. How often are full-mouth radiographs taken? How often are bitewings? Are radiographs taken according to clinical indication or per protocol?
Well-managed practices have clear radiographic protocols. Practices without clear protocols might be over-radiographing (unnecessary radiation) or under-radiographing (missing pathology).
Perio Protocol and Disease Management
Ask: “What percentage of your patients have periodontal disease?” and “How do you manage periodontal patients?”
Practices with strong perio protocols manage periodontal disease systemically. They educate patients, provide therapeutic scaling, maintain recall on more frequent intervals, and refer complex cases to specialists.
Practices without clear perio protocols often have unmanaged periodontal disease, lower quality care, and potentially higher liability.
Infection Control and Safety
Observe hygiene operatories for infection control practices. Are proper PPE worn? Is proper hand hygiene followed? Is sterilization happening appropriately?
Ask: “Tell me about your infection control protocols” and “Have you had any OSHA inspections?”
Evaluating Hygiene Patient Base
Understanding the hygiene patient base helps you assess sustainability.
Patient Demographics
Ask: “What’s your patient population like? Are there many families, pediatric patients, elderly patients, adult-focused?” Different patient populations drive different hygiene patterns.
Young families generate more frequent recall (for children), but might have lower periodontal disease. Elderly populations might have fewer natural teeth but higher periodontal disease rates.
Insurance Mix
What percentage of hygiene patients have insurance, are uninsured, or are on membership plans? Insurance mix affects payment and collection challenges.
Ask: “What’s the insurance breakdown of your hygiene patient base?”
Patient Retention in Hygiene
Beyond overall recall compliance, are specific patients staying? Are new patients retained in hygiene after initial appointments?
Ask: “What percentage of new patients continue in hygiene after their initial appointment?” High retention indicates patient satisfaction. Low retention indicates new patients aren’t satisfied or aren’t being retained by the system.
Evaluating Interdental Coordination
How hygiene and restorative work coordinate affects overall productivity and patient experience.
Hygiene-Doctor Communication
Ask: “How do you communicate between hygiene and doctor about patient findings and treatment needs?”
Well-coordinated practices have clear systems. The hygienist performs exam and initial assessment. The doctor reviews findings and makes clinical decisions. There’s clear communication about recommended treatment.
Poorly coordinated practices have inconsistent communication, duplicate exams, or treatment recommendations that don’t align.
Prescription for Hygiene Work
Ask: “Does the doctor prescribe specific work for hygiene patients, or do you have standard protocols?”
Practices with clear protocols have defined what prophylaxis includes, when therapeutic scaling is prescribed, when fluoride is provided, etc. Patients know what to expect.
Practices without clear protocols might do inconsistent work, which affects production and patient satisfaction.
Doctor Exam of Hygiene Patients
Ask: “What’s the doctor exam process for patients completing hygiene?” Does the doctor conduct thorough exams of hygiene patients and make treatment recommendations?
Practices where doctors don’t exam hygiene patients thoroughly miss treatment opportunities and don’t leverage hygiene patients for restorative work.
Financial Health of the Hygiene Department
Hygiene profitability is critical to overall practice profitability.
Hygiene Net Production (Profit)
Beyond gross production, understand the profitability of hygiene. Hygiene operating costs (hygienist salary and benefits, supplies, equipment maintenance) are typically 35 to 45 percent of hygiene production.
If hygiene production is $350,000 and costs are $140,000, net hygiene contribution is $210,000. If costs are $175,000, net contribution is $175,000.
Ask: “What are your direct costs for hygiene (hygienist compensation, supplies, etc.)?”
Calculate the net contribution of the hygiene department. This is real profit available for other practice expenses.
Hygiene Production Trend
Is hygiene production growing, stagnant, or declining over the past three years?
Growing hygiene production indicates strong patient relationships and effective recall. Declining hygiene production indicates patient loss or lower recall compliance.
Ask: “What’s been the trend in your hygiene production over the past three years?”
Red Flags in Hygiene Evaluation
Some findings should concern you:
- Hygiene production declining
- Hygiene department turnover (multiple hygienists leaving recently)
- Low recall compliance or high patient no-show rates
- Significant gaps in hygiene scheduling
- Poor operatory equipment condition
- Vague answers about patient relationships or staff plans
- Hygienists who seem unhappy or unsure about staying
Creating Your Hygiene Evaluation Summary
After evaluating hygiene, summarize your findings:
- Annual and per-hygienist production
- Operatory utilization and scheduling efficiency
- Recall compliance rates
- Hygiene team tenure and plans to stay
- Hygiene compensation relative to market
- Quality indicators (charting, protocols, infection control)
- Patient retention and satisfaction
- Interdental coordination and efficiency
- Financial contribution of hygiene department
Use this summary to assess whether the hygiene department is a strength (contributing significantly to profitability and growth) or a concern (declining, unstable, or inefficient).
Using Hygiene Evaluation in Your Overall Assessment
Hygiene evaluation is one dimension of overall practice evaluation, but it’s an important one. A practice with strong hygiene production is typically more profitable, more stable, and easier to own than one with weak hygiene.
If you identify hygiene concerns during your evaluation, understand whether they’re addressable (can you build on existing strength, or would you need to rebuild hygiene from scratch?) or dealbreaker (are you qualified to fix hygiene issues, or is this beyond your expertise?).
The best acquisitions often include strong hygiene departments run by stable, happy hygienists. If you’re considering a practice with weak or unstable hygiene, ensure you understand the challenges and have a plan to fix them post-closing.
Contact JoAnne to discuss your practice evaluation and specifically to evaluate the hygiene department of any practice you’re considering. With 30+ years of practice consulting, JoAnne helps dentists understand hygiene productivity, identify hygiene strengths and concerns, and plan for successful transition post-closing.