The Repair of Furcal Perforations in Different Diameters with Biodentine, MTA, and IRM Repair Materials: A Laboratory Study Using an E. Faecalis Leakage Model.

E Övsay,R F Kaptan,F Şahin

doi:10.1155/2018/5478796

Abstract

The aim of this study is to evaluate the microleakage of repair materials MTA, IRM, and Biodentine applied on furcal perforations with different diameters. One hundred and forty extracted human teeth were used in this study. The teeth were divided into 2 main groups (60 teeth in each) which were then divided into 3 subgroups (n = 20). The remaining 20 teeth were divided into 2 groups (10 in each) to serve as controls. The furcal areas of the teeth were perforated with #2 cylindrical burs in Group 1 whereas perforations were made using #4 cylindrical burs in Group 2. Each subgroup of both Groups 1 and 2 received ProRoot MTA (ProRoot, USA), Biodentine (Septodont), or IRM (Dentsply, USA) to repair the perforations. An experimental set-up was established to contaminate repaired perforations with E. Faecalis (ATCC29212). The turbidity of bacteria was observed on the 7th, 15th, 30th, and 45th days. The data was analysed by chi-square test (p > 0.05). The number of bacteria in the group perforated by bur #2 and closed by MTA was found to be lower than the other groups on the 7th day (p < 0.05). There was no statistical difference in the bacterial counts of other groups on the 15th, 30th, and 45th days (p > 0.05). ProRoot MTA was found to be more successful in the prevention of bacterial leakage compared to IRM and Biodentine in smaller perforations during the 1st week.

Highlights

The primary aim of the root canal treatment is to prevent apical periodontitis which is a consequence of bacterial contamination within the root canal system [1]
The group where perforations were created with size 2 burs and Mineral Trioxide Aggregate (MTA) was used as a repair material showed the lowest leakage with 57.1% of nonleaked samples compared to the other groups (p < 0.05)
The goal of endodontic treatment is to eliminate bacteria and maintain a hermetic seal throughout the root canal system. From this point of view, hermetic seal is supposed to have an impact on clinical success in the long term; it is not possible to determine this parameter under clinical conditions

Summary

Introduction

The primary aim of the root canal treatment is to prevent apical periodontitis which is a consequence of bacterial contamination within the root canal system [1]. The success of endodontic treatment is highly dependent on the prevention recontamination of root canal space following disinfection. Irrigation, and hermetic seal of the root canal system are indispensable steps to achieve this goal. Perforations are mishaps that might occur during the course of endodontic treatment mainly due to iatrogenic factors. They might occur due to extensive decay of dentinal structure. A perforation creates a pathological passage between the root canal system and the periodontium and jeopardizes the success of the endodontic therapy. The damage caused by the perforation may eventually result in the extraction of the compromised tooth [2]

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