Comparison of Different Gutta-Percha Root Filling Techniques in Mandibular Incisors

Abstract

Objectives: The aim of the study was to measure percentage of gutta-percha–filled areas (PGFA), sealer-filled areas (PSFA), and voids in root canals of mandibular incisors obturated with different root canal filling techniques. Methods: Root canals of 60 mandibular incisors were instrumented using ProTaper Universal instruments up to size F2. Root canals were filled with cold lateral compaction, ProTaper F2 single cones and warm vertical compaction by using MTA Fillapex selaer (Angelus Solucoes Odontologicas, Londrina PR, Brazil). Teeth were then sectioned horizontally at 2, 4, 6, and 8 mm from the apex. The area values of each section were calculated and converted to percentages (PGFA, PSFA, and voids) of the total area. Results: With the exception of 2-mm level, no significant differences were found among groups regarding percentage of voids. Warm vertical compaction group presented the most PGFA and least PSFA (P < 0.05). Cold lateral compaction group presented the least PGFA and most PSFA (P < 0.05). Conclusion: The cold lateral compaction technique had the least PGFA, and warm compaction had the most PGFA in the root canal filling of mandibular incisors.