Mary Beth Dunn DDS is a dentist/dental office in Williamsville, NY 14221. A dentist trained to diagnose, treat, and prevent diseases of the gums, teeth, and jaw. Pediatric dentistry is much different from general or family dentistry in that Dr. Dunn has specifically gone to school and trained to offer dentist services to children through their teenage years. Childrens teeth are very different from adults from the moment your teeth begin to grow and continuing through your teenage growth years.First Friday of the Month, 1:00 p.m. 5:00 p.m.