Capacity Planning: When Growth Outpaces Your Practice

New patients are good news, and they arrive on top of the families you already have. Each one needs visits, chair time, and doctor minutes, so a practice that says yes to everyone has a full week and a tired team. The practices that handle this well are not working harder than you are. They count the right things before the change arrives.

Start with the year

Start with the days you intend to work this year. Take out holidays, CE, vacation, and administration days. A month is too short to show the shape of the year, so the year is the unit that adds up. What is left, with your office hours and your staff, sets how many chair minutes and exam room minutes the year holds, and your own minutes set the line the schedule waits on.

Then treatment, because each modality runs its own sequence. Bracket and wire looks one way, aligners another, Phase I a third, and a case holds its chair time for the whole of treatment. Add the sequences and you have the active cases your year can support.

How growth shows up

Growth shows up in how far out appointments are available. As active cases grow, their maintenance visits fill the day one appointment at a time, and a schedule that once opened at four weeks books at eight, then twelve. Once a window like 8 to 12 weeks maxes out, patients are booked later than their sequence calls for. The third next available appointment, counted in days, measures that wait (Institute for Healthcare Improvement).

Nothing breaks when this happens; the weeks simply get tighter. Families feel it as a longer wait for the next appointment, and the front desk feels it as a day with no room left in it.

Check your sequence before you add capacity, because a poorly built schedule looks the same from the front desk: appointments inserted into a sequence, visits a case does not need, cases that run long. If your cases are finishing when your sequence says they should, and the days are still full, what you have is growth. If they are running long while the days stay full, the schedule needs rebuilding before it needs more room.

What a new case costs the week

Say you add 120 starts over a year. At 45 minutes per exam and consult, and the median practice's ratio of 471 consultations to 334 starts, those starts come from about 170 consults, or about 127 doctor hours (2023 JCO Orthodontic Practice Study).

Those cases keep asking for appointments. Visits every six weeks add roughly 1,040 visits a year, about 23 a week, and at 15 minutes of doctor time each, that is close to six more doctor hours every week for two years. Cases also run long, an average of 19.9 months (Dental Press Journal of Orthodontics). That is most of one clinical day, added permanently, out of one good year.

The visits do not stop after the first year either; a case started this fall is still on the schedule the fall after next. Swap in your own consult time and recall interval, and the added hours still land in the same place: your week.

The room you already have

Some of the room is in your building already. The median practice holds 243 patients in observation (2023 JCO Orthodontic Practice Study), and benchmarks expect 20% of exams to move into observation, with 20% of starts coming from that pool (Gaidge). Those families know you, and they are the easiest starts you will ever make.

Room also comes from hours you have not used yet: an earlier start, a longer day, or a second chair running while you are in another.

The average orthodontist starts 208 bracket and wire cases and 87 aligner cases a year (Orthodontic Products / Levin Group 2025 survey). You do not have to match those numbers to run a healthy practice.

Plan the year you can actually run

Planning a year is a different exercise from running a week. Your year has a shape: the days you intend to work, the chair and exam minutes those days hold, the sequences your cases run, and the room already in your building. Laid out together, they show what your practice can support, where the bottleneck sits, and when to add. That is worth doing deliberately, with someone who does it often.