Dr. Pereira and Dr. Leighton

   Get To Know Us

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     Patient Information

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     Contact Us

About Us:


A warm and caring atmosphere along with high quality dental care combines to set Ponemah Crossing Dental, P.C. apart from all others. Located at Ponemah Crossing, the junction of Routes 101A and 122 in Amherst, our dental office is within easy access for all Souhegan Valley patients. Our practice has proudly provided care to our community for over 40 years. Recent renovations and digital technology allow our professional staff to offer patients high quality comprehensive dental care.


In the dental profession, as in most sciences, dramatic changes occur almost weekly as new techniques and methods are developed. Our team here in Amherst, NH is committed to keeping you abreast of the progress in current dental techniques with the highest degree of professional skill and ability. With dedicated staff members, we work hard to answer questions fully and care gently for your dental needs. We take pride in the high standards that we set.


We strive to provide state of the art dental therapy which produces the finest dental health and improves the quality of life of our patients in a caring and trusting atmosphere. We treat patients in such a way that they will encourage their relatives and friends to visit our office.
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Listen to what our patients have to say

Kristina N.

Dr Leighton is very friendly and thorough. He makes sure all my questions are answered and also spent time explaining how a recent diagnosis will affect my dental health. I used to have a lot of dental anxiety, but since I’ve started seeing Dr Leighton I actually look forward to going to the dentist

Cammie O.

Going to Drs. Clark and Leighton office is a serene experience from start to finish. The front desk staff is welcoming and efficient and I never had to wait more than 5 minutes in the 10+ years I’ve been going. Dr Leighton is easy going and easy to talk to. The hygienists are super nice. The billing staff/managers are personable and give you all the info up front about costs for fillings etc. – so no surprises.

Cary H.

Dr.Leighton is very knowledgeable and explains things in a way I can easily understand. He presents options and allows me to take part in the decisions about treatment. Everyone in the office is very helpful and caring. I have complete confidence that I am receiving the best possible care.

May B.

I am always greeted with a smile and a caring attitude. Everyone is completely professional while being considerate of my questions and needs. Work done is gentle as possible and most satisfactory. I love going to my hygienist. She has my complete trust and appreciation for her services.

Laura K.

I’ve been coming to Clark & Leighton for at least five years now. I even drive about 45 minutes to get to my appointments. My hygienist is really great – my teeth look great and feel great when she’s done. Dr. Leighton is personable, and doesn’t waste your time recommending expensive procedures that you don’t need. Try them – you’ll be really glad you did.

Latest News

Congratulations Julie!

Congratulations Julie!

Congratulations to Julie on winning the Children's Stuffed Animal Drawing for the months of October and November! Julie is nine (9) years old and is excited as this is her first time winning our Stuffed Animal Drawing...she has been hoping to win...

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Holiday Toy Drive Collection

Holiday Toy Drive Collection

This will be our thirty-first year participating in the Holiday Toy Store's Toy Drive. Anyone interested in joining our effort, simply stop by our office at 102 Ponemah Rd. in Amherst between November 21 and December 8, Monday - Friday, from 8:00...

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Congratulations Birdie!

Congratulations Birdie!

Congratulations to Birdie on winning the Children's Stuffed Animal Drawing for the months of August and September! Birdie is three (3) years old and excited to spend lots of time with her new friend...so is her sister! We will be doing another...

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