Revista de Odontologia da Universidade de São Paulo
versão impressa ISSN 0103-0663
BRAMANTE, Clovis Monteiro e FREITAS, Carla Vilma Junta. ENDODONTIC RETREATMENT: COMPARATIVE STUDY BETWEEN MANUAL TECHNIQUE, ULTRASONIC SCALER, AND CANAL FINDER. Rev Odontol Univ São Paulo [online]. 1998, vol.12, n.1 ISSN 0103-0663. http://dx.doi.org/10.1590/S0103-06631998000100004.
Endodontic retreatment of 30 teeth filled with guta percha and zinc oxide-eugenol was carried out using manual instrumentation, ultrasonic scaler, and the Canal Finder System. The following variables were evaluated: time spent to reach the apex; time spent to complete cleaning of the canal; apical extrusion of material; and cleanliness of the canals. Results showed the Canal Finder System as providing the highest level of cleanliness of the canal system; lingual walls were constantly cleaner than buccal walls; ultrasonic technique presented a greater degree of apical extrusion of filling material.
Palavras-chave : Retreatment; Ultrasonics; Canal Finder System; Root canal therapy.