Endodontic specialty practice operating under the affiliated Mission Hills Endodontics platform with surgical operating microscopes and 3D cone-beam imaging, Hillcrest Endodontics handles root canal therapy, retreatments, and apicoectomies from the 306 Walnut Avenue dental building. Referrals arrive primarily from neighboring general dentists on the same corridor including Walnut Avenue Dentistry for cases that exceed in-office endodontic scope. American Association of Endodontists membership and California State Association of Endodontists affiliation tie the practice into the specialty referral network across San Diego County. Apicoectomy cases and surgical root-end resections requiring coordinated extraction planning are co-managed with Center for Oral & Facial Surgery when tooth retention is no longer viable and implant transition becomes the better long-term outcome. The most demanding work performed here is microscope-guided retreatment of previously failed root canal therapy, often involving calcified canals and missed anatomy from the original procedure.