Nicholas Thacker DDS Inc. has practiced from Suite 1 at 8770 Cuyamaca Street in Santee since the office opened in 1972, anchoring a medical-dental park accessible from the SR-52 Cuyamaca exit. Dr. Thacker graduated with highest honors from the University of Southern California School of Dentistry after earning a Bachelor of Science in Chemistry from Cal State San Bernardino, and the practice shares the 8770 Cuyamaca complex with hearing-health providers including Superior Ear Works at 8790 Cuyamaca St. As part-time Clinical Faculty at the USC School of Dentistry, Dr. Thacker maintains direct access to evolving restorative and endodontic research protocols that feed back into his Santee clinical practice. The office's endodontic program handles root canals, apicoectomy procedures, and retreatments using an endo microscope for canal-level visualization, serving a geriatric patient base that includes residents of Lantern Crest Senior Living on Lantern Crest Way. Apicoectomy cases involve surgical access through the buccal cortical plate, retrograde MTA root-end filling, and guided bone regeneration with resorbable collagen membranes to seal periapical pathology unresponsive to conventional retreatment.