Anthony P. Potente, DDS, MS earned his dental degree from UCLA School of Dentistry in 1992 and completed the UCLA endodontic specialty program in 1998, and he practices root canal therapy at the C&P Endodontics suite on Third Avenue in Hillcrest. Root canals are performed under operating-microscope magnification with ultrasonic instrumentation, and teeth that cannot be saved by retreatment are referred to Center for Oral & Facial Surgery for atraumatic extraction and immediate site preservation. Microsurgical apicoectomy and retrograde fillings are available for failed prior root canals where conventional re-treatment has hit anatomical limits. Endodontic post-op prescriptions for amoxicillin or clindamycin specific to dental abscess flora are routinely filled at Pride Pharmacy a few blocks west on University Avenue. Calcified canals, S-shaped curves, and traumatic dental injuries with open apices represent the most technically demanding cases handled at this Hillcrest endodontic practice.