A periodontist is a dentist who specializes in the prevention, diagnosis, and treatment of periodontal disease and in the placement of dental implants, per the American Academy of Periodontology's own description on perio.org; a general dentist is the broad-scope primary provider who handles routine periodontal care and refers the advanced cases out.
The split runs on referral: a general dentist keeps routine cleanings and early gum disease and sends advanced periodontal cases to a periodontist — and dental implants are a genuine overlap between the two, not one provider's exclusive territory.
The short answer
A general dentist is trained broadly across oral health and treats periodontal disease as one part of routine care; a periodontist completed an additional CODA-accredited residency focused specifically on periodontal disease and implant placement.
Both work inside the scope of a dental license — the periodontist's residency is additional training, not a different legal authority.
Most general dentists manage routine gum health themselves — cleanings, scaling, early-stage periodontal disease — and refer the cases that need a specialist's depth.
A periodontist's practice runs almost entirely on those referrals rather than on patients booking a periodontist directly.
What each one does
A general dentist provides comprehensive primary oral care — exams, cleanings, fillings, crowns, and routine periodontal maintenance — for patients across every stage of gum health.
A periodontist, per the American Academy of Periodontology, specializes in "the prevention, diagnosis, and treatment of periodontal disease and in the placement of dental implants": treating infection and inflammation of the gums and supporting bone once it goes beyond routine care, and performing surgical procedures like gum grafts, pocket-reduction surgery, and implant placement.
| Comparison | General dentist | Periodontist |
|---|---|---|
| Typical periodontal case | Routine cleaning, scaling, early-stage gum disease | Advanced periodontal disease, surgical gum treatment |
| Training beyond dental school | None required for periodontal care | CODA-accredited periodontics residency, 30-month minimum |
| Board certification | Not applicable to this scope | American Board of Periodontology — voluntary |
| Dental implants | Some general dentists place them | Also place them — overlaps with GPs and oral surgeons |
What the periodontics residency adds
Both start the same way: a bachelor's degree, four years of dental school for a DDS or DMD, and licensure.
A general dentist can begin practicing at that point — there's no additional residency requirement to treat periodontal disease within a general license.
A periodontist continues into a periodontics residency accredited by the Commission on Dental Accreditation (CODA), which must run "three consecutive academic years with a minimum of 30 months of instruction," with at least two consecutive years of clinical education in a single educational setting (Standard 4-1).
Treat 30 months as the accreditation floor, not a typical program length.
After residency, a periodontist may pursue certification from the American Board of Periodontology — voluntary, not a license — through a written Qualifying Examination and an Oral Examination.
See board certification in periodontology for how that two-exam process works, and periodontics residency: what CODA requires for the full residency detail.
Which periodontal cases a GP refers out
There's no fixed rule — the line moves with each dentist's training and comfort — but a common pattern holds.
General dentists tend to manage routine cleanings, scaling and root planing, and early-stage gum disease in house, since that falls within the preventive and restorative care most dental licenses and training already cover.
What tends to get referred: periodontal disease advanced enough to need surgical treatment, gum grafting, pocket-reduction surgery, and bone regeneration procedures.
Implant placement sits differently from the rest of this list: it's a genuine overlap rather than a case type that belongs to one provider.
General dentists, periodontists, and oral surgeons all place dental implants, and which one places a given implant varies by the individual dentist's training and the practice's setup — this article states that the overlap exists without ruling on which provider should handle a given case.
The referral relationship runs both ways
Periodontics runs on referral in the same way endodontics and oral surgery do, rather than the more direct-to-consumer pattern orthodontics or pediatric dentistry often see: a general dentist identifies periodontal disease or an implant case beyond routine care and sends it to a periodontist.
The relationship doesn't end there.
Once periodontal treatment or implant placement is complete, a periodontist typically refers the patient back to the referring general dentist for the restorative work that follows — the crown or bridge that goes on top of an implant, and ongoing periodontal maintenance, which a dental hygienist often performs between visits.
The periodontist isn't the patient's dentist of record; the two-way handoff is what makes this a referral relationship rather than a one-time handout.
Where pay and "who does implants" questions go
This article states that the training gap and the implant overlap exist; it doesn't rank the two roles by pay or adjudicate who should place a given implant.
For pay, there's no periodontics-specific federal wage figure — the U.S. Bureau of Labor Statistics groups periodontists under the broad "Dentists, all other specialists" category rather than tracking the specialty on its own code.
See which dental specialty pays the most for that grouping and the dental SOC codes that do exist.
For the oral surgeon's side of the implant overlap and its own referral pattern, see oral surgeon vs. general dentist.
For the broader comparison across all the dental specialties, see general dentist vs. specialist.
This article is general career information, not clinical, legal, or financial advice. Referral patterns and training requirements vary by dentist, region, and practice.