Correlation between chemical composition and sealing ability of various gutta-percha brands using different filling techniques

AbstractThe purpose of this in vitro study was to determine the apical seal of three different obturation techniques and correlated to the chemical composition of five gutta-percha cone brands. Five brands were used: Dentsply; Tanari; Konne; Obtura Spartan and Analytic Endodontics. One hundred and twenty human upper central incisors were instrumented using a pressureless crown-down technique and irrigated with 0.9% saline solution. The experimental groups were obturated using the Continuous Wave of Condensation and with a shaped single cone technique. The control group was obturated using the lateral condensation. All specimens were stored in 100% humidity for 1 week, coated with nail varnish, except for the apical 2mm, and suspended in India ink for 10 days. Teeth were decalcified, rendered transparent, and linear dye penetration was measured. The results showed significantly greater dye penetration between lateral condensation and shaped single cone and wave of condensation. Could be concluded that the best technique was the wave of condensation and the brands Obtura and Tanari had the best results