Evaluación del grado de filtración apical en conductos vestibulares de molares superiores obturados con técnica de condensación lateral, cono único Mtwo y una combinación de ambas

Abstract

The purpose of this study was to compare the apical sealing ability of three different obturation techniques, lateral condensation, single cone and a combination of both. Ninety buccal molar root canals were used in this study and were divided into three groups of 30 canals (15 mesial, 15 distal ) for the different techniques. The distal and mesial canals were instrumented with Mtwo rotary system following the sequence recommended by the manufacturer to achieve a 25/06 file. Canals of group 1 were obturated with single cone technique 25/06, group 2 was sealed with lateral condensation technique, master cone 25/02 and accessory cones N. 15, and group 3 sealed with master cone Mtwo 25/06 and accessory cones N.15. The sample was subjected to a clearing technique and placed on methylene blue for 3 days to quantify the dye penetration into the apical 3mm and quantify the results on a 0-3 scale. This scale represents the minimum and maximum value of leakage, their equivalents are: 0 = no leakage, 1 = apical leakage in the first apical millimeter, 2 = apical leakage in the second apical millimeter, 3 = apical leakage in the third apical millimeter. ANOVA test was used to determine the difference in microleakage between groups and Tukeytest to pairwise differences. Our results showed 90% of microleakage in single cone sample and 93.3% in the sample positive framework for microleakage in the hybrid technique while the lowest values were observed in the lateral condensation technique (p < 0.05) No significant difference was found between sealing in mesial and distal roots of the same group and comparing them with other groups (p>0 .05)