How hard is it to get a periodontics residency seat?
Two published sources describe the specialty's pipeline: the CODA/ADA HPI 2025-26 survey counted 57 accredited periodontics programs, 193 first-year residents and 589 residents enrolled, with 188 graduates in 2025, and the Postdoctoral Dental Matching Program's 2026 results show 296 applicants for 132 periodontics positions, 129 of them matched.
What neither source publishes is an acceptance rate — and both applicant counts rule one out.
Periodontics residency, by the numbers
The CODA/ADA HPI Survey of Advanced Dental Education counts each specialty's accredited programs and enrollment.
Its 2025-26 edition reports 57 periodontics programs operating, with 193 first-year residents, 589 residents enrolled in total, and 188 graduates in 2025.
That is the scale of the specialty's training pipeline — the seats that exist, the people filling them, and the specialists coming out the other end.
The 2026 Match, as published
Periodontics is one of six dental specialty programs in the Postdoctoral Dental Matching Program's annual match.
The program's Results of the Matching Program for 2026-2027 Positions show 296 applicants participating for 132 periodontics positions offered, with 129 matched.
These are counts, not odds: the same publication's totals are the clearest demonstration of why no acceptance rate can be built from them.
Why there's no acceptance rate to quote
It's tempting to divide the 129 matched by the 296 applicants and call the result an acceptance rate.
Don't — the Match's own totals show why that arithmetic doesn't hold.
Applicants can rank more than one program type on the same application, so the per-specialty applicant counts overlap rather than representing distinct groups of people; across every program type the 2026 Match tracks, the per-type counts sum to 3,554 against an actual pool of 3,213 people.
The CODA/ADA HPI survey's applications column has the same problem in a different form: it counts an applicant once per program applied to, so it is not a count of applicants either.
What the sources support, reported exactly as published: 57 programs, 193 first-year residents, 589 enrolled, 188 graduates — and 296 applicants, 132 positions, 129 matched.
Why this page reports one year, not a trend
A single year's numbers don't say whether periodontics is getting harder or easier to enter over time — only a published multi-year series can answer that, and the sources this site checked don't give periodontics one.
The Match's five-year applicant series, published on which dental specialty is hardest to match into, covers orthodontics, oral and maxillofacial surgery and pediatric dentistry only.
So this page makes no rising-or-falling claim: the 2025-26 and 2026 figures above are the snapshot, reported exactly as published.
What the numbers don't tell you
The Match and the HPI survey count applicants, positions, and enrollment — neither publishes why any individual applicant matched or got a seat, and neither does this article.
Board scores, class rank, and research all plausibly factor into a competitive residency application the way they do for any other, but the published data doesn't break down which of those matters most or by how much.
What isn't published — and what this article won't guess
Where this fits, and what it doesn't answer about pay
Getting a seat is one step on the path described in full in how to become a periodontist; what the residency itself requires once you're in is covered in periodontics residency: what CODA requires, and what comes after — voluntary ABP certification — in board certification in periodontology.
For the role overview, see what a periodontist does.
Pay doesn't move with these capacity numbers either: there's no periodontics-specific federal wage figure, because the U.S. Bureau of Labor Statistics groups periodontists under the catch-all "Dentists, all other specialists" category (SOC 29-1029) rather than tracking the specialty on its own code.
See which dental specialty pays the most for how that grouping works.
This article is general career information, not admissions advice. Verify current figures against the CODA/ADA HPI Survey of Advanced Dental Education.