Orthodontists and endodontists are two recognized dental specialties that share a dental-school foundation and then divide sharply in focus, training hours and pay data.
Orthodontics corrects malocclusion and orofacial skeletal and neuromuscular abnormalities; endodontics treats the dental pulp and the tissues around the root.
Both residencies carry 24-month CODA minimums, but orthodontics adds 3,700 scheduled hours and averages longer.
On pay, BLS gives orthodontists their own median ($289,140, May 2025) while endodontists fall inside a grouped line ($224,990).
Here is the full comparison.
Orthodontist vs. endodontist: the short answer
Both are among the 12 dental specialties the National Commission on Recognition of Dental Specialties and Certifying Boards (NCRDSCB) currently recognizes, and the definitions barely overlap.
NCRDSCB defines orthodontics and dentofacial orthopedics as covering the diagnosis, prevention, interception and correction of malocclusion, plus neuromuscular and skeletal abnormalities of the developing or mature orofacial structures.
Endodontics it defines as the specialty concerned with the dental pulp and periradicular tissues — the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp.
One specialty corrects tooth and bite problems, including the skeletal side of them; the other treats what is inside the tooth and around its root.
The training floors are equal on paper — CODA requires at least 24 months for both — but the orthodontics standard adds 3,700 scheduled hours, and actual programs averaged 31.2 months against 25.3 for endodontics in 2025-26.
The pay data is not symmetrical either: BLS publishes an orthodontist median ($289,140, May 2025) but no endodontist series, so endodontists land in a grouped line ($224,990) that pools several specialties.
The role guides carry the depth — the orthodontist career guide and the endodontist career guide.
This page stays on the comparison itself: training first, then the daily work, then what the pay numbers do and don't settle.
And if your real question is how an orthodontist divides cases with general dentists, that is a different match-up: orthodontist vs. general dentist.
Training: the same 24-month floor, different hours
Both residencies sit beyond the DDS/DMD and are accredited by the Commission on Dental Accreditation (CODA), which sets a minimum length for each.
For endodontics: a minimum of 24 months of full-time study.
For orthodontics and dentofacial orthopedics: a minimum of 24 months and 3,700 scheduled hours — the only one of the pair whose floor is written in hours as well as months.
NCRDSCB's 2025 eligibility table counts two years of advanced education beyond the DDS/DMD for board certification in both specialties.
Where the standards diverge is what fills the time.
The endodontics standards require training in non-surgical and surgical endodontic treatment and retreatment, and add instruction in implant dentistry — a didactic topic in the standard, not surgical implant training.
The orthodontics standard's extra weight sits in the 3,700 scheduled hours that build the correction work the specialty definition names.
Actual programs run past the floors, by different amounts: across 2025-26, accredited orthodontics programs averaged 31.2 months against 25.3 for endodontics.
Side by side:
| Training | Orthodontics | Endodontics |
|---|---|---|
| CODA minimum | 24 months + 3,700 scheduled hours | 24 months, full-time |
| Average length, 2025-26 | 31.2 months | 25.3 months |
| Accredited programs | 69 | 56 |
| First-year residents | 431 | 234 |
| Total enrolled | 1,180 | 501 |
| Graduates in 2025 | 414 | 215 |
| Avg. first-year tuition and fees | $55,640 (57 of 69 programs charging) | $53,817 (40 of 56 charging) |
| Avg. first-year stipend | $33,390 (31 programs paying) | $29,187 (20 paying) |
Two caveats on the money rows.
The survey's averages count only the programs that charge tuition or pay a stipend — programs reporting $0 are excluded — and charging is the majority arrangement on both sides: 57 of 69 orthodontics programs charged first-year tuition against 31 paying a stipend, and 40 of 56 endodontics programs charged against 20 paying.
Individual programs vary widely.
What the table cannot tell you is how hard each residency is to enter: these are program and enrollment counts, not applicant pools, so treat any acceptance percentage quoted elsewhere as unsourced.
The neighboring match-ups have their own pages too: orthodontist vs oral surgeon if a surgical route is on your list, and endodontist vs periodontist on the endodontics side.
Daily work: alignment over time vs. the tooth's interior
An orthodontist's clinical center is the correction work in the specialty definition: malocclusion, plus the neuromuscular and skeletal abnormalities of the developing or mature orofacial structures.
The object of the work is a correction — of the malocclusion or the skeletal or neuromuscular abnormality around it — and the definition hands the orthodontist that whole arc, from diagnosis and prevention through interception and correction.
An endodontist's clinical center is the dental pulp and the periradicular tissues around the root.
The residency's required training spans non-surgical and surgical endodontic treatment and retreatment, so the trained scope runs from routine non-surgical treatment to the surgical and re-treatment ends of the specialty.
The workforces are differently sized.
ADA HPI counted 10,844 professionally active dentists holding an orthodontics and dentofacial orthopedics certificate or degree in 2025, against 5,738 holding one in endodontics.
BLS's employment estimates are lower and measured differently: 7,100 orthodontist jobs in 2025, with endodontists inside the 5,800-job "dentists, all other specialists" line alongside several other specialties.
HPI counts credentials — a dentist holding two specialty credentials appears in each — and neither source counts procedures, so we have no sourced figure for how many root canals or aligner cases each specialty handles.
How each specialty splits work with general dentists is its own comparison — on the endodontics side, see endodontist vs. general dentist.
Pay: one direct federal series, one grouped line
Start with the asymmetry: only one side of this comparison has its own federal number.
BLS lists separate wage series for general dentists, oral and maxillofacial surgeons, orthodontists and prosthodontists — no other specialists.
The May 2025 median for orthodontists is $289,140.
Endodontists have no BLS series: they fall in the grouped "dentists, all other specialists" line, median $224,990, which pools every specialty BLS does not list separately.
Read it as a proxy for the group — never as an endodontist figure.
The BLS measure has a known edge, too: the wage estimates exclude the self-employed and the owners and partners in unincorporated firms, so self-employed owners' income sits outside these medians on both sides of this comparison.
ADA HPI's net income medians for private-practice specialists cover owners and employees together, and the latest reportable values point the other way: $279,040 for endodontists, from the 2021 survey year, against $242,630 for orthodontists, from 2024.
HPI suppressed the 2025 figures for both specialties because there were too few observations, the reportable values swing year to year on small samples, and the survey publishes no owner-versus-associate split for either specialty.
So the two sources disagree in direction — the orthodontist series sits above the grouped line in the federal data, while the endodontist median sits above the orthodontist median in the older survey data.
The measures, the years and the groupings all differ.
Neither settles which career pays more, and none of the figures is a promise for an individual practice.
For the full ranking and the grouping mechanics, see which specialty pays most — and the per-role pay pages drill down further: the orthodontist salary guide and the endodontist salary guide.
Handle these numbers with care
Lifestyle: what the data does — and doesn't — say
The honest part first: our research found no published data covering call schedules, weekly hours or after-hours coverage for either specialty.
Any claim that one specialty's lifestyle beats the other's is not something our sources can settle, so treat hour-for-hour comparisons that circulate online as anecdotes.
What is measured is the training runway and its financing.
Orthodontics programs averaged 31.2 months in 2025-26 against 25.3 for endodontics, and tuition is the majority arrangement on both sides — 57 of 69 orthodontics programs charged an average $55,640 for the first year, and 40 of 56 endodontics programs charged an average $53,817.
Stipends are the minority arrangement: 31 orthodontics programs paid an average $33,390 and 20 endodontics programs paid an average $29,187.
Those are program averages, not what any individual resident pays or receives.
The market you would graduate into is measured too.
BLS projects 6% employment growth from 2025 to 2035 for orthodontists, and 1% for the grouped "dentists, all other specialists" line where endodontists sit — label that 1% for what it is, a projection for the whole pooled occupation rather than an endodontics-specific figure.
The same BLS source counts 7,100 orthodontist jobs and 5,800 jobs in the grouped specialist line for 2025.
Day to day, the schedule follows the work each definition describes: correction of malocclusion and orofacial abnormalities on the orthodontic side; pulp and periradicular treatment, from non-surgical care through surgery and retreatment, on the endodontic side.
How either lands on a calendar — week shape, evenings, call — is set practice by practice, so ask it directly of residency programs and of employers in interviews, and weigh posted schedules over general impressions.
Choosing between them
The specialty definitions make the first cut.
Orthodontics owns the diagnosis, prevention, interception and correction of malocclusion plus the neuromuscular and skeletal abnormalities of the orofacial structures; endodontics owns the dental pulp and periradicular tissues, with required training on both the non-surgical and surgical side.
If the work you want is correction of malocclusion and the orofacial abnormalities that come with it, one path fits; if you want care inside the tooth and around the root — including surgical and re-treatment work — the other does.
Training is the second filter.
The floors match at 24 months, but the orthodontics standard adds 3,700 scheduled hours and its programs averaged 31.2 months against 25.3 in 2025-26 — so weigh the extra runway against what each curriculum actually trains for.
On the data available, pay should not decide it.
The federal series favors orthodontists on its face but leaves endodontists in a pooled line, the older survey medians run the other way on different years, and the outlook projection — 6% for orthodontists against 1% for the grouped line — carries the same grouping caveat.
If you sit on the employer side of the comparison, the hiring guides cover both roles: hiring an orthodontist and hiring an endodontist.
This article is general career information, not clinical, legal or financial advice. Accreditation standards, survey figures and projections come from the sources named above; verify current requirements with CODA, the relevant certifying board and your state dental board.