New Publication: Dentinal Microcracks

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New Publication: Dentinal Microcracks

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The Walking Dead Project - Dentinal Microcracks

Dentinal Microcrack Development after Canal Preparation: A Longitudinal in Situ Micro–Computed Tomography Study Using a Cadaver Model

Gustavo De-Deus, Júlio César de Azevedo Carvalhal, Felipe Gonçalves Belladonna, Emmanuel João Nogueira Leal Silva, Ricardo Tadeu Lopes, Renato Evando Moreira Filho, Erick Miranda Souza, José Claudio Provenzano, Marco Aurélio Versiani

DOI: http://dx.doi.org/10.1016/j.joen.2017.04.027

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Prof Marco Versiani - AAE Meeting 2016

Dentinal Microcracks Developed by Instrumentation and Obturation
Friday, April 8th 2016 Room: 2005
Moscone Center West
San Francisco, California, USA

Publication: Review on Dentinal Microcracks - ETopics

Abstract

The dentinal radicular microcrack is a difficult clinical problem to diagnose and treat, and it is one of the most common reasons for tooth extraction. These microcracks start in the radicular dentin, and laboratory studies have linked crack formation to some routine endodontic procedures, namely root canal preparation, obturation, and retreatment. Most of these studies were performed using destructive methods, such as the sectioning technique, previously developed for the study of the internal anatomy of teeth. Nowadays, technological advances in the field of imaging may lead to a more thorough understanding of dentinal microcracks. This article seeks to critically appraise the methodological aspects involved in the study of dentinal radicular microcrack formation after root canal preparation, obturation, and retreatment.

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Publication: Journal of Endodontics

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Publication JOE

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Abstract

Introduction This study aimed to evaluate the frequency of dentinal microcracks observed after root canal preparation with 2 reciprocating and a conventional fullsequence rotary system using micro–computed tomographic analysis.

Methods Thirty mesial roots of mandibular molars presenting a type II Vertucci canal configuration were scanned at an isotropic resolution of 14.16 mm. The sample was randomly assigned to 3 experimental groups (n= 10) according to the system used for the root canal preparation: group A-Reciproc (VDW, Munich, Germany), group B-WaveOne (Dentsply Maillefer, Baillagues, Switzerland), and group C-BioRaCe (FKG Dentaire, La-Chaux-de-Fonds,Switzerland). Second and third scans were taken after the root canals were prepared with instruments sizes 25 and 40, respectively. Then, pre- and postoperative cross-section images of the roots (N= 65,340) were screened to identify the presence of dentinal defects.

Results Dentinal microcracks were observed in 8.72% (n= 5697), 11.01% (n= 7197), and 7.91% (n= 5169) of the cross-sections from groups A (Reciproc), B (WaveOne), and C (BioRaCe), respectively. All dentinal defects identified in the postoperative cross-sections were also observed in the corresponding preoperative images.

Conclusions No causal relationship between dentinal microcrack formation and canal preparation procedures with Reciproc, WaveOne, and BioRaCe systems was observed.