Why Choose Us Here at Advanced Endodontics of Westchester, we’re proud to provide world class endodontic care, backed by over 70 years of experience, excellence, and expertise. Each of our doctors and team members bring something special to our practice. Whether it be Dr. Kolnick’s experience and position as a world authority on laser-assisted endodontics, Dr. Diamond’s specialized training and years of experience treating pediatric patients and those with special needs, Dr. Hope’s multi-national endodontic training and once-held position of Diplomat of the Israeli Board of Endodontics, or Dr.