• 185 Cottage St, Suite 2, Portsmouth, NH 03801

Seacoast Periodontics & Dental ImplantsA caring father/daughter team committed to clinical excellence and personalized treatment.

As periodontists, we specialize in treating gum disease with conventional and laser periodontal therapy as well as dental implant placement, gum grafting and crown lengthening. We offer all levels of sedation to improve your experience and we are passionate about meeting your goals in a comfortable environment. Every patient is unique and we strive to create comprehensive treatment plans tailored to you. We ourselves have been patients of many doctors and surgeons of the years. Our experiences have convinced us that proper planning and understanding of treatment before making a final decision and proceeding is crucial. We intend to meet your needs and expectations, and to avoid surprises. We look forward to meeting with you and working closely with your referring dentist to provide you with cutting-edge, patient-centered care.

Meet Our Doctors

Drs. Amy and David Rosania combine 40 years’ experience and training in Periodontics and Dental Implant Surgery. Both doctors are Board Certified and were included on the National Consumer Advisory Board’s list of America’s Best Dentists and voted onto New Hampshire Magazine’s list of Best Dentists by their colleagues each year since 2017. Together they have founded and lecture for three Study Clubs for dentists and hygienists. Drs. Amy and David are very proud and gratified to give back to the community through education and their annual Helping Hands Free Tooth Extraction Day. They are members of the American Academy of Periodontology, the International Team for Implantology and the International Society of Periodontal Plastic Surgeons.


Drs. Amy and David Rosania were both included on the National Consumer Advisory Board’s list of America’s Best Dentists for 2017-2020. They were also voted onto New Hampshire Magazine's list of New Hampshire's Best Dentists by their dental colleagues from 2017 to 2020.

They were also voted onto New Hampshire Magazine's list of New Hampshire's Best Dentists by their dental colleagues from 2017 to 2020.

  • Seacoast Periodontics and Dental Implants, Periodontist, Portsmouth, NH

Our Services

Our primary goal is to save teeth whenever possible. We provide scaling and root planing, laser and traditional periodontal therapy, crown lengthening, gingival (gum) grafting, and bone grafting. We perform tooth extractions when necessary and place dental implants and utilize bone grafts and sinus lifts as needed. We offer oral and IV sedation for anxious patients.

Our Technology

Our practice incorporates advanced technology to achieve the most precise and effective treatment. We offer cone beam 3D imaging, digital radiography, laser treatment, microsurgery and piezosurgery. These approaches have been validated by rigorous clinical research.

Cone Beam CT Scan

Cone Beam CT Scan

Cone Beam technology provides a digital tomographic 3D view of the patient’s area of interest. A traditional x-ray is only... Learn More

Implant Planning Software

Implant Planning Software

This innovative new technology will allow your doctor to perform virtual implant surgery before he/she ever touches the patient’s mouth... Learn More



Piezosurgery - These handpieces are used for periodontal (gum) and osseous (bone) surgery to gently and meticulously remove harmful bacteria without requiring invasive measures… Learn More

Microsurgical Instruments

Microsurgical Instruments

Microsurgical instruments have smaller working tips than conventional instruments and are utilized for minimally-invasive procedures... Learn More

Our Testimonials

  • "Would be happy to recommend you. Fantastic service by everyone in your office...."

    - Bob F.

  • "Amazing. Super nice, super helpful, and super competent. I wouldn't go anywhere else."

    - Marc S.

  • "I would recommend your practice to anyone I know. Very impressed with Dr Rosania!"

    - Joan C.

For Our Patients

The critical components of successful periodontal or implant therapy are a comprehensive diagnosis and an honest assessment of your individual goals. Before starting treatment you should know what to expect during and after treatment. Please click below to learn about your consultation appointment and to read our pre-op and post-op instructions.

Request More Information

Contact Us

Contact Us

Thank you for your support and understanding as we all navigate the COVID-19 pandemic. We continue to adhere to state, CDC, OSHA, and ADA guidelines and we ask patients to observe the following protocols:

  • We will promote social distancing with modified patient check-in. Office entry will be restricted to patients with appointments only and all escorts must remain in their cars.

  • Please wear a mask when entering our office.

  • If you have a fever, respiratory symptoms (coughing and sneezing), intestinal symptoms (nausea or diarrhea), malaise, or loss of sense of smell or taste, we ask that you be tested for Covid-19. If you test positive, please notify us and we will postpone your treatment until you test negative and your symptoms have disappeared.

  • If you have been in close contact with anyone with Covid-19 (for example, a family member), any appointments should be delayed until they and you have received a negative Covid-19 test result.

Thank you to everyone in our community for your continued trust in us.