Published by
Throne of Profit EditorialReviewed by
William Hassell
Founder & Chief Editor, Throne of Profit
Most dentists know their fee schedule cold. Far fewer know which of those procedures actually leave money on the table after the assistant's time, the lab bill, the materials, and the chair-hour that could have been spent on something else. A packed schedule feels like a good month — but a day full of low-margin work that ties up the chair can quietly earn less than a lighter day built around the right procedures. The question isn't what you charge for a procedure; it's how much profit that procedure produces per hour of chair time, because chair time is the one thing you can't make more of.
This is a different problem from setting your fees. Fees ask "is this price right?" Service mix asks "given my fees, which work should fill the chairs?" You can have healthy fees across the board and still run a thin practice because the schedule is dominated by procedures that consume time and materials out of proportion to what they return.
TWO PROCEDURES, SAME DAY
(fee alone hides the real story)
Procedure A ── fee $$$ │ chair 90 min │ high lab+material │ profit/hr ░░░
Procedure B ── fee $$ │ chair 30 min │ low material │ profit/hr ▇▇▇
▼
The bigger fee earned LESS per chair-hour.Owner symptoms
The schedule is full, production looks fine, but the take-home doesn't match the effort.
You price procedures individually but never look at which ones carry the practice.
Certain "signature" procedures feel important, but you've never checked what they net.
Why this happens
Dental production is tracked by fees billed, not by profit produced. A daily production number rewards a full chair regardless of what filled it. But two procedures with similar fees can have wildly different cost structures — one leans on expensive lab work and long chair time, the other is quick and material-light. When you only watch fees and total production, those differences stay invisible. The mix drifts toward whatever's easy to schedule or whatever the team is used to, rather than toward the work that actually funds the practice.
Common mistakes
Judging procedures by fee alone, ignoring the chair-time and materials behind them.
Treating all "production" as equal, when an hour of one procedure nets far more than an hour of another.
Protecting low-margin habits because they're familiar or feel like part of the practice's identity.
Ignoring chair-time as a cost, so a long procedure looks as good as a short one with the same fee.
Never separating mix from fees — assuming a pricing review covers a service-mix problem, when they're two different questions.
Business consequences
A practice that never reads profit per procedure ends up busy and underpaid. The schedule fills with time-heavy, material-heavy work that produces impressive daily numbers and thin monthly deposits, while the genuinely profitable procedures get squeezed into whatever gaps remain. The owner works full days and can't understand why the margin is soft. The owner who understands the mix does the opposite: they know which procedures earn their keep per chair-hour, they build the schedule and their referrals to favor that work, and they make the low-margin procedures a deliberate choice rather than a default. Same hours, meaningfully different result.
How experienced operators think about it
They stop looking at the fee and start looking at profit per chair-hour. The mental model is simple: every procedure has a fee, a set of direct costs (assistant time, materials, lab), and a chunk of chair time — and the number that matters is what's left over divided by the time the chair was occupied. Ranked that way, procedures sort themselves into work that funds the practice and work that merely fills it. That ranking doesn't mean dropping the low earners; plenty of them serve patients and feed the practice in other ways. It means running the mix on purpose — knowing the trade-off every time a chair-hour gets committed.
Practical actions
List your common procedures with their fee, direct costs, and typical chair time. You don't need perfect numbers — good estimates reveal the pattern.
Calculate profit per chair-hour, not just profit per procedure. Divide what's left after direct costs by the chair time. This is the number that ranks the work.
Rank the procedures and look at the spread. The gap between your best and worst per-hour earners is usually wider than anyone expects.
Check what your schedule is actually made of. Match the ranking against a few real weeks — is the chair filled with high-margin or low-margin work?
Steer the mix deliberately. Favor the profitable work where you can, and keep low-margin procedures only where they serve patients or feed the practice on purpose.
Re-run it when lab prices, materials, or your team's time change — the ranking shifts as costs do.
This is general business information, not dental/clinical or professional advice. Consult a qualified professional for your situation.
Questions every owner should ask
Which procedures produce the most profit per chair-hour — and which the least?
Is my schedule filling with the profitable work, or just with whatever's easy to book?
Am I keeping a low-margin procedure on purpose, or only out of habit?
Frequently asked questions
Isn't this the same as reviewing my fees?
No, and confusing the two is common. Reviewing fees asks whether each price is set correctly. Procedure profitability takes your fees as given and asks which work you should want more of. You can have well-set fees and still run a thin practice because the schedule is dominated by time-heavy, low-margin procedures. Fix your fees in a fee review; fix your mix here. They're separate levers, and a practice usually needs both.
Does low profit per chair-hour mean I should stop offering a procedure?
Not necessarily. A procedure can earn little per hour and still be worth keeping — it may serve your patients, complete their care in-house, or lead to more profitable follow-on work. The point of ranking by profit per chair-hour isn't to cut everything at the bottom; it's to make each choice deliberate. Once you know a procedure is low-margin, you can decide to keep it for good reasons instead of drifting into a schedule full of it by accident.
Related articles
Running a Profitable Dental Practice — the pillar.
Building an In-House Membership Plan for Uninsured Patients — turning fee-for-service patients into steady revenue.
Offering Financing So Cost Stops Killing Treatment — helping patients say yes to needed treatment.
What Does a Job Actually Cost You? Real Job Costing — the general costing discipline behind this.
Am I Charging Enough? How to Know for Sure — the fee question this article sits beside.
Every business has more decisions than time
Whether you need help solving one problem, evaluating a major opportunity, or making a company-changing decision, Throne of Profit gives you consulting capacity on demand.
Purchase only the consulting capacity you need and use it across Weekly Focus, Strategic Focus, Financial Focus, and ThinkTank engagements.