COREY + THEN Dental Implants, Periodontics, Oral Surgery

Your Expert Periodontists and Oral Surgeons in South Portland, ME

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Dental Implants

A dental implant is a durable, long-term solution for a missing tooth that looks and feels like your own. We use this trusted treatment to restore function and bring back your complete, confident smile.

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Full Arch Restoration

Full arch restoration replaces an entire upper or lower row of missing or failing teeth using a few strategically placed dental implants. This modern solution restores both the function and beauty of your smile.

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Wisdom Teeth Removal

Wisdom teeth removal is a common oral surgery that takes out one or more of your third molars to prevent pain, infection, or crowding in the back of your mouth.

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Restoring Health

One Smile at a Time

At Corey + Then Dental Implants Periodontics Oral Surgery, we deliver personalized, collaborative oral health care that is supported by leading-edge technology, to help you achieve the best results possible. Our practice is built on a foundation of trust, empathy, and results that last a lifetime. We are committed to going the extra mile to help you regain your smile—and to even enjoy the process along the way.

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Meet

Our Specialists

Dr. Peter R. Then

Dr. Then is a board-certified periodontist known for advanced implant care and leadership in the field since 1995.

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What Our

Patients Say

Mark Levine
24 hours ago
Unfortunately, I've needed quite a bit of care from them; but the scheduling, explanations, friendliness, and outcomes have been outstanding.
Brad Goulet
2 days ago
The doctor in the staff were awesome
Eme O
5 days ago
Love the Dr Corey & Then Periodontics Team. Excellent high quality health care!
Nick Northcott
5 days ago
Dr. Then and his team made getting a tooth extracted as quick and painless as possible. I am very impressed with their services.
Denise “Dee” Longchamps
1 week ago
Very nice, clean and comfortable!
Bright Light
2 weeks ago
My experience with Dr.Then, and the amazing Drs. assistants and staff was absolutely wonderful. Amanda, ( Dr. Saltz assistant) , did my follow up in removing stitches. She was amazing, sweet, caring and highly professional. The receptionists Kate, Hannah, Lori and Michelle are so pleasant and kind. . I am blessed to be a patient under such caring Drs and staff . They are genuine in heart. Thank you , Margie. My update : As of today May 6, 2026 I had the best dental cleaning with Caroline . She was amazing . I felt so peaceful and relaxed . She did a very professional and gentle procedure. Dr. Then is a gentleman and I believe he really cares about his patients. I am so blessed that there are genuine professionals that have integrity and compassion . This practice deserves much praise and recognition for their excellence. 💕

Schedule a Consultation

Your journey to a healthier, more confident smile starts with a consultation. Fill out the form below or contact us—our team is here to answer questions and help you feel at ease as you take the next step to improve your oral health.

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