ИСПОЛЬЗОВАНИЕ РУЧНЫХ И РОТОРНЫХ ИНСТРУМЕНТОВ ПРИ ПОВТОРНОМ ЭНДОДОНТИЧЕСКОМ ЛЕЧЕНИИ

USE OF HAND AND ROTARY INSTRUMENTS DURING RETREATMENT OF ROOT CANALS

To evaluate the effectiveness of rotary Protaper retreatment files with and without solvent (chloroform) versus Hedstrom files and k- flex files with solvent for removing gutta-percha from root canal. The greatest difference between techniques was found in the apical third of canals with less amount of debris left in Protaper universal retreatment files group than in K-FlexoFiles and Hedstrom file group. There was a statistically significant difference in favor of Protaper universal retreatment files with and with out chloroform with respect to Hedstrom files and K-Flexofiles regarding the time required to remove the gutta-percha.