Effects of Four Instruments on Coronal Pre-enlargement by Using Cone Beam Computed Tomography

Sanfelice, Cintia Mussoline; da Costa, Fernanda Botega; Reis Só, Marcus Vinícius; Vier-Pelisser, Fabiana; Souza Bier, Carlos Alexandre; Grecca, Fabiana Soares

doi:10.1016/j.joen.2009.12.003

« Previous Next »Journal of Endodontics
Volume 36, Issue 5 , Pages 858-861, May 2010

Effects of Four Instruments on Coronal Pre-enlargement by Using Cone Beam Computed Tomography

Cintia Mussoline Sanfelice, DDS
- School of Dentistry, Universidade de Caxias do Sul (UNICSUL), Caxias do Sul, RS, Brazil
Fernanda Botega da Costa, DDS
- School of Dentistry, Universidade de Caxias do Sul (UNICSUL), Caxias do Sul, RS, Brazil
Marcus Vinícius Reis Só, PhD
- School of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Address requests for reprints to Dr Marcus Vinicius Reis Só, Rua Sousa Lobo 62 casa 03, 91320-320, Porto Alegre, RS, Brazil.
Fabiana Vier-Pelisser, PhD
- School of Dentistry, Universidade de Caxias do Sul (UNICSUL), Caxias do Sul, RS, Brazil
Carlos Alexandre Souza Bier, PhD
- School of Dentistry, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
Fabiana Soares Grecca, PhD
- School of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil

published online 08 March 2010.

Abstract

Introduction

This ex vivo study used cone beam computed tomography to evaluate the amount of dentin removal from the distal wall of the mesial canal of human mandibular first molars caused by 4 instruments used to flare the cervical third.

Methods

Thirty-two mesial roots were divided into 4 groups prepared by using ProTaper, K3, Gates-Glidden, or LA Axxess. The dentin thickness of the distal cervical wall of mesial canals was measured before and after the preparation by using computed tomography and Adobe Photoshop software.

Results

There was no statistically significant difference between the study groups (P > 05).

Conclusions

All the instruments used for cervical preparation seemed to be safe and did not damage the dentin structure of the distal wall of mesial root canals of mandibular molars.

Key Words: Computed tomography, endodontic, image analysis, risk zone