Middle Island Dentists. The Smilist Dental in Middle Island, NY includes a team of highly-skilled Dentists, Periodontists, and Dental Professionals committed to meeting all your dental needs under one roof. This Suffolk County, NY dentist office provides an extensive amount of services such as general dentistry, cosmetic dentistry, restorative dentistry, periodontics, dental implants, and Invisalign. We're proud to bring high-quality... Read More about The Smilist Dental - Middle Island