Washington DC Board Certified Endodontists, Angela P. Noguera, D.D.S., M.S. and Paula L. Russo, D.D.S., M.S, Diplomates of the American Board of Endodontics. Offering: Root Canal Therapy, Root Canal Retreatment, Apicoectomy, Hemisection and Root Amputation and Internal Non-Vital Bleaching.