5 clinics ranked by DR ScoreUpdated 0 paid placements in this rankingHow we rank →
Top DR Score among endodontists: Sudbury Dental Smile Center: Ronnie Du, DMD, 5.0★ from 350 Google reviews, open Saturdays until 3 PM.
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5 of Sudbury’s 21 clinics have an endodontist on staff, as of October 2026. 1 of them open Saturdays and 0 stay open after 6pm. They offer 1 of our 17 tracked services on average.
| Rank | Clinic | DR Score | Rating (reviews) | Evenings / weekends | Best for |
|---|---|---|---|---|---|
| 1 | Sudbury Dental Smile Center: Ronnie Du, DMD | 67 | 5.0★ (350) | Sat | Top DR Score among endodontists |
| 2 | Sudbury Endodontics LLC | 58 | 4.8★ (17) | — | — |
| 3 | Dr. Kelly A. Barnes, DMD | 57 | 3.5★ (2) | — | — |
| 4 | Sudbury Dental Associates | 55 | 5.0★ (17) | — | — |
| 5 | Sudbury Dental Arts Dental Implants and Invisalign Center | 54 | 4.8★ (21) | — | — |
Ordered by DR Score, a 0–100 score from 6 published factors. Scores refresh weekly.
Ranked #1 in Sudbury
323 Boston Post Rd, Sudbury, MA 01776
Ranked #1 because of its Google rating and review volume: 5.0★ from 350 Google reviews, the most Google reviews in Sudbury (350).
111 Boston Post Rd Ste 215, Sudbury, MA 01776
Ranked #2 because of its Google rating and review volume: 4.8★ from 17 Google reviews, 17 Google reviews.
111 Boston Post Rd Ste 107, Sudbury, MA 01776
Ranked #3 because of its Google rating and review volume: 3.5★ from 2 Google reviews, 2 Google reviews.
Based on reputation, review volume, recency, services and profile completeness.
410 Boston Post Rd, Sudbury, MA 01776
Ranked #4 because of its Google rating and review volume: 5.0★ from 17 Google reviews, 17 Google reviews.
144 North Rd Suite 2125, Sudbury, MA 01776
Ranked #5 because of its Google rating and review volume: 4.8★ from 21 Google reviews, 21 Google reviews.
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This list covers the 5 Sudbury clinics that have an endodontist on staff. We scored 5 Sudbury clinics on 6 factors: reputation 45%, review volume 15%, recency 10%, access 15%, services 10%, profile completeness 5%. Data from Google listings and clinic websites, refreshed October 21, 2026.
Paid placement never changes a rank or score. Featured clinics are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Sudbury data |
|---|---|---|---|
| Reputation | 45% | Bayesian-adjusted Google star rating | Measured |
| Review volume | 15% | log10(review count) against the city maximum | Measured |
| Recency | 10% | Share of reviews in the last 12 months | Measured |
| Access | 15% | Evenings, Saturday, Sunday, same-day/emergency, accepting new patients | Measured |
| Services | 10% | Services offered out of 17 | Measured |
| Profile completeness | 5% | Named dentists, years open, languages, insurance, photos | Measured |