Specialties: Access Endodontics is a full-service endodontic practice located in Topsham, Maine. Dr. Gregory H. Sprague, DDS, MSD and Dr. Bonnie J. Retamozo, DDS, MSD, serves the endodontic needs of the Mid Coast Maine community through state-of-the art technology, techniques and accessibility. This practice accepts many insurance plans, CareCredit and self-pay patients. Established in 2018. ...Specialties: Access Endodontics is a full-service endodontic practice located in Topsham, Maine. Dr. Gregory H. Sprague, DDS, MSD and Dr. Bonnie J. Retamozo, DDS, MSD, serves the endodontic needs of the Mid Coast Maine community through state-of-the art technology, techniques and accessibility. This practice accepts many insurance plans, CareCredit and self-pay patients. Established in 2018. The dream of starting Access Endodontics became a reality when the practice opened its doors November 1st, 2018. The practice serves theMidCoast Maine region led by Dr. Gregory H. Sprague DDS, MSD.see more