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Best Periodontists in Portsmouth, NH (2026)

3 clinics ranked by DR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Top DR Score among periodontists: Seacoast Periodontics & Dental Implants, 4.9★ from 1,060 Google reviews, open 4 days a week.

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3 of Portsmouth’s 47 clinics have a periodontist on staff, as of October 2026. 0 of them open Saturdays and 0 stay open after 6pm. They offer 14 of our 17 tracked services on average.

Top 3 periodontists in Portsmouth at a glance

Top 3 periodontists in Portsmouth at a glance
RankClinicDR ScoreRating (reviews)Best for
1Seacoast Periodontics & Dental Implants674.9★ (1,060)Top DR Score among periodontists
2Bay Breeze Dentistry674.8★ (229)—
3Coastal Periodontics614.2★ (19)—

The 3 periodontists in Portsmouth, ranked

Ordered by DR Score, a 0–100 score from 6 published factors. Scores refresh weekly.

  1. Ranked #1 in Portsmouth

    #1 Seacoast Periodontics & Dental Implants

    185 Cottage St Suite 2, Portsmouth, NH 03801

    67/100

    Ranked #1 because of its Google rating and review volume: 4.9★ from 1,060 Google reviews, the most Google reviews in Portsmouth (1,060).

    • 4.9from 1,060 Google reviews
    Hours
    Mon–Thu 8 AM–5 PM · Fri–Sun closed

    General dentistryEmergency careImplantsCrownsBondingCosmeticFull restoration

    Book appointment at Seacoast Periodontics & Dental ImplantsFull profile(603) 294-0110
    In their words

    We are a father-daughter Periodontists who specialize in the in treatment of gum disease with conventional and laser periodontal therapy, gum grafting and implant placement. We offer all levels of sedation to improve your experience and we are passionate about meeting your goals in a comfortable environment.

    From Seacoast Periodontics & Dental Implants's own description. Not part of the ranking.

  2. #2 Bay Breeze Dentistry

    14 Manchester Square Suite 215, Portsmouth, NH 03801

    67/100

    Ranked #2 because of its Google rating and review volume: 4.8★ from 229 Google reviews, 229 Google reviews.

    • 4.8from 229 Google reviews
    Hours
    Mon–Thu 8 AM–4:30 PM · Fri–Sun closed

    General dentistryCleaningEmergency careRoot canalExtractionWisdom teethImplantsInvisalign+9 more

    Book appointment at Bay Breeze DentistryFull profile(802) 402-4701
    In their words

    Dr. Carmen Santana-Paine is a top Portsmouth Dentist & has been serving the community for 15+ yrs. Bay Breeze Dentistry has gone beyond the norm to provide your family with a comprehensive approach to dental care. By using “holistic dentistry,” she is able to show you the connection between your oral health & your entire well-being. As part of this modern approach, our caring dentist in Portsmouth NH has adopted innovative protocols to help diagnose and treat airway…

    From Bay Breeze Dentistry's own description. Not part of the ranking.

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How we ranked Portsmouth dentists

This list covers the 3 Portsmouth clinics that have a periodontist on staff. We scored 3 Portsmouth clinics on 6 factors: reputation 45%, review volume 15%, recency 10%, access 15%, services 10%, profile completeness 5%. 44 were excluded (44 duplicate listings). 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.

Read the full method: formula, sources and exclusions

DR Score factors and weights
FactorWeightComputed fromIn Portsmouth data
Reputation45%Bayesian-adjusted Google star ratingMeasured
Review volume15%log10(review count) against the city maximumMeasured
Recency10%Share of reviews in the last 12 monthsMeasured
Access15%Evenings, Saturday, Sunday, same-day/emergency, accepting new patientsMeasured
Services10%Services offered out of 17Measured
Profile completeness5%Named dentists, years open, languages, insurance, photosMeasured

Best Periodontists in Portsmouth, NH: frequently asked questions

Who are the periodontists in Portsmouth?

3 Portsmouth clinics have a periodontist on staff in our data. By DR Score, the highest-ranked are Seacoast Periodontics & Dental Implants, Bay Breeze Dentistry and Coastal Periodontics. These counts come from clinic hours and profile data as of October 2026, re-checked every week.

How are periodontists in Portsmouth ranked?

Each clinic has one DR Score from 0 to 100, built from 6 published factors: reputation, review volume, recency, access, services and profile completeness. This page lists the 3 Portsmouth clinics that have a periodontist on staff, in DR Score order. No clinic pays for its position.

Update log for Portsmouth

  1. : DR Scores recalculated for 47 clinics.
  2. : 44 duplicate listings merged.

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