Influence of sealer placement technique on the quality of root canal filling by lateral compaction or single cone.

Adriana Simionatto Guinesi,Mario Tanomaru-Filho,Gisele Faria,Idomeo Bonetti-Filho

doi:10.1590/0103-6440201302370

Adriana Simionatto Guinesi, Mario Tanomaru-Filho + Show 2 more

Open Access

https://doi.org/10.1590/0103-6440201302370

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Abstract

The aim of this study was to evaluate the influence of the sealer placement technique on the quality of root canal filling using Lateral Compaction (LC) or Single Cone (SC). In order to do that, 60 mesial roots of mandibular first molars were prepared and divided into 2 groups (n=30), according to the filling technique: LC and SC. Each group was subdivided into 3 subgroups (n=10), according to the different sealer placement methods: A: Master gutta-percha (GP) cone; B: Lentulo spiral; C: File. The roots were sectioned at 2, 4 and 6 mm from the apex and photographed with the aid of a digital microscope. Then, areas of GP, endodontic sealer and voids were measured, and these data were subjected to statistical analysis. LC technique showed no statistically difference (p>0.05) in the percentage of GP area, sealer and voids between the subgroups at any of the three levels. After use of SC, higher percentages of sealer area were found at all levels (p<0.01) when the sealer was placed with a file. At 2 mm, higher percentage of void areas (p<0.05) was observed when the cone was used, lower percentage with K-file and the lowest percentage with Lentulo. At 4 mm, cone showed higher percentage of void areas (p<0.05). At 6 mm, there were no significant differences (p>0.05) between the three methods. Considering these results, using an instrument for sealer placement was important in the SC technique to reduce voids. Regarding LC, the sealer placement techniques provided similar results.

Highlights

Successful endodontic treatment is achieved by proper cleaning, shaping and seal of the root canal system
The combination of gutta-percha (GP) and an endodontic sealer is usually employed for root canal filling
Does this combination contribute to an effective filling, and the dimensional stability of the endodontic sealer [2], the filling technique [3,4], and the sealer placement method [5]

Summary

Introduction

Successful endodontic treatment is achieved by proper cleaning, shaping and seal of the root canal system. The combination of gutta-percha (GP) and an endodontic sealer is usually employed for root canal filling. Does this combination contribute to an effective filling, and the dimensional stability of the endodontic sealer [2], the filling technique [3,4], and the sealer placement method [5]. The filling process can be optimized by choosing a high-performance sealer combined with GP, an adequate filling technique and a more efficient sealer placement method. Several methods have been used for placing endodontic sealer into the root canal, including files and reamers, GP cones, paper points, Lentulo spirals, the Max-i-Probe Delivery System, ultrasonic files, among others. Kahn et al [8] used LC and compared six sealer placement methods, and concluded that the Lentulo spiral and the Max-i-Probe

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