A periodontist residency is the specialty-training step after dental school: an accredited program in periodontics, the specialty covering diseases of the tissues that support and surround the teeth, implants included.
CODA's accreditation floor is three consecutive academic years with a minimum of 30 months of instruction — not a typical length.
The closest published answer to a typical length is the CODA/ADA HPI 2025-26 survey average: 35 months.
Here's what the standard requires, what programs cost, and what a periodontist finishes holding.
What is a periodontist residency?
A periodontist residency is the accredited specialty-training program that turns a dentist into a periodontist.
It trains periodontics — the specialty covering the prevention, diagnosis and treatment of diseases of the tissues that support and surround the teeth, implants included — and it is formal accredited education, not on-the-job training.
CODA's standards require didactic and clinical training in dental implants, including implant site development and the surgical placement of dental implants, so the surgical implant work is required training rather than an optional track.
The residency is a training credential, not a license: dentists must be licensed in the state where they work, and a periodontist practices on that same state-issued dental license, with the residency as the added specialty training.
Board certification from the American Board of Periodontology is a further voluntary step — see board certification in periodontology.
For where this step sits in the full path, see how to become a periodontist.
How long is a periodontist residency?
The Commission on Dental Accreditation's standard for periodontics sets the duration: "The program duration must be three consecutive academic years with a minimum of 30 months of instruction.
At least two consecutive years of clinical education must take place in a single educational setting."
That wording is a floor a program can't go below, not a description of how long programs typically run — and unlike the floor, actual length is published as an average: the CODA/ADA HPI 2025-26 Survey of Advanced Dental Education put accredited periodontics programs at 35 months on average.
The residency begins after dental school and a DDS or DMD.
For how CODA accreditation and board certification fit together across all 12 specialties, see dental residency & board certification.
This page goes deep on what's specific to periodontics.
What the standard requires beyond duration
The duration floor isn't the standard's only requirement.
The same standards require didactic and clinical training in dental implants, including implant site development and the surgical placement of dental implants — the surgical implant work a periodontist does is required training, not an add-on.
Teaching is in the curriculum, with a cap: students and residents "must have training and experience in teaching of periodontology," and that teaching curriculum "must not exceed 10% of the total program time."
Research is required too — "advanced dental education students/residents must engage in scholarly activity," and graduates "must possess a general understanding of the theory and methods of performing research."
The standards document on CODA's site is the governing source for the full curriculum; verify requirements against the current published standards.
What programs cost — and what residents are paid
The CODA/ADA HPI 2025-26 survey of advanced dental education gives the averages: periodontics programs charged $48,280 in first-year tuition and fees on average — 45 of the 57 programs charged — and paid a first-year stipend averaging $30,131 at the 28 programs that pay one.
Both averages cover only the programs that charge or pay, so individual programs vary widely around them, in both directions.
Certificate or degree? It depends on the program
The accreditation standard doesn't fix the credential — certificate versus degree is the institution's choice, so a periodontist may finish holding either depending on where they trained.
The CODA/ADA HPI survey, the other source this article checked, counts programs and enrollment without naming each program's credential.
Confirm the credential with the individual program.
How competitive is getting a periodontics seat?
Two published sources describe the pipeline: the CODA/ADA HPI 2025-26 survey counted 57 accredited periodontics programs, 193 first-year residents and 188 graduates in 2025, and the Postdoctoral Dental Matching Program's 2026 results show 296 applicants for 132 periodontics positions, 129 of them matched.
No acceptance rate turns up in the published sources this site checked — see how competitive periodontics residency actually is for both data sets and the caveats that rule a rate out.
What isn't published about periodontics residency
Several questions applicants and job seekers ask about periodontics residency don't have a sourceable public answer in the sources this article checked.
CODA's standard sets the training floor above; the survey publishes capacity and average costs.
Between them, the fine-grained numbers stay unpublished.
What these sources don't publish
Where residency fits, and what it doesn't answer about pay
The residency described above is the credential gap between a general dentist and a periodontist — it's also the training every periodontist completes before pursuing voluntary board certification from the American Board of Periodontology.
See board certification in periodontology for that two-examination process; finishing residency doesn't require board certification to begin practicing.
Pay doesn't move cleanly with the credential: there's no periodontics-specific federal wage figure — the specialty falls in BLS's catch-all "Dentists, all other specialists" category (SOC 29-1029), whose median was $224,990 in May 2025 — and ADA HPI's latest published median net income for private-practice periodontists is $295,780, for 2024.
See which dental specialty pays the most for that grouping in full.
This article is general career information, not clinical, legal, or financial advice. Program requirements should be verified against current CODA and NCRDSCB sources.