Speaker: Marcelo Coelho, D.D.S., Ph.D., M.Sc. |This presentation aims to discuss with an unbiased and scientific approach the relationship between root canal instrumentation and dentinal defects.​

SP-35: In the event of endodontic instrument separation, the endodontist has to be prepared to manage this difficult clinical situation. The clinical decision should be based on a thorough knowledge of the success rates for each treatment option and the risks associated with them. SP-36: Speaker: André G. Machado, D.D.S. Removing fractured files below the curvature of root canals can be extremely inaccessible, causing great wear and even deviation while trying to remove it, especially in highly curved roots. In this context, a new proposal was designed, based on the removal of fractured instruments by surgical access without removing the apical third or promoting excessive wear. SP-37: Speaker: Asgeir Sigurdsson, D.D.S., M.S. Separated instruments in root canals have the potential to compromise endodontic treatment as they prevent access to the apex and thereby impede thorough cleaning, shaping and sealing of the root canal system. Removing or bypassing a separated instrument in the apical third, especially curved roots, is almost impossible.

Authors: Luciana C. Reis, Ph.D., Isabela N. Rocas, Ph.D., Jose F. Siqueira, Jr, Ph.D., Milton de Uzeda, Ph.D., Vane S. Lacerda, B.Pharm, Regina M.C.P. Domingues, Ph.D., Saulo R. Moraes, Ph.D., Roberto M. Saraiva, M.D., Ph.D. Infective endocarditis (IE) is still associated with high mortality, and antibiotic prophylaxis strategies are under intense debate. We evaluated the incidence of bacteremia after root canal preparation in teeth with necrotic pulps and apical periodontitis.