Kestler, Francis A DDS
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From routine dental check up visits, oral hygiene, to maintaining your beautiful smile, orthodontics to straighten misaligned teeth and teeth whitening to make your smile the brightest it can be, it is our goal to make and keep your teeth beautiful in a pleasant environment that you will look forward to visiting.

Pediatric dentistry and orthodontics also available. We also gently and carefully fix the dental and tooth problems that may be bothering you. No matter your dental needs, you can count on the dental team at Dr. Frank Kestler's dentist offices.
Services
Our practice was started by Dr Frank Kestler in an effort to provide the East End of Long Island with a place where dental patients would be comfortable with their care. Dr. Kestler is a second generation dentist and learned a lot about how to treat his patients from his father. As a Colonel in the United States Army Reserves Dr. Kestler has protected our country in Iraq and is as dedicated to your care as he is to our country.
Frank Kestler obtained his D.D.S. degree in 1987 from NYU College of Dentistry in NY, NY. Initially, he practiced dentistry in Queens County and the Bronx, NY. In 1993, he began working as a Dentist on Eastern Long Island. Today, he is proud to be able to offer his patients the convenience of his services in two locations.
It is our belief that a child's relationship with his or her dentist will inspire good habits and decrease future oral problems. Our staff is specially trained to make the youngest of patients more comfortable. We take our time to examine your child. We explain the processes that we use and why we need to take care of our teeth.
We understand that paying for dental care can be difficult. Our goal is to help as many patients as possible receive dental treatment whether or not they are covered by dental insurance. The cost of your treatment may vary depending on your individual needs and treatment plan.

We will discuss with you the cost of your treatment and your available payment plan options before you begin treatment so that you can make the best choice for your dental health.
Reviews (2)
Natalia N. Pavlenco
Natalia N. Pavlenco
Nov 11, 2020
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I finally got an appointment.3 weeks waiting with the pain.And...unbelievable...Someone took full mouth XRay and after refered me to tooth extraction and root canal.When I asked why I have to look for another doctor and where is Dr.Kestler she said he is not working in Mattituck and none of any doctors of his team works here.What is the purpose of giving wrong information on their website.?
Robert Liotta
Robert Liotta
Jul 10, 2016
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Dr. Seider is by far one of the best dentist on the island! I've been going to him for over ten years now. After moving to Florida and having a terrible experience with a dentist, both with pricing and quality of work, I decided to plan my dentist appointments with my travel for holidays just to get work done from him. He takes his time with each patient and makes sure you are in absolutely no pain! which is different then a lot of other dentists in my experience. He also is very fair with his prices and still provides top quality work. I highly recommend going to him for any dental work!