Iranian Endodontic Journal

Abstract

Abstract:

Introduction:

Advances in endodontic instrumentations are centred around in the innovation of variable metallurgy and designs of endodontic files to reduce procedural errors. However, there is a lack of consensus in literature with regards to shaping ability of WOG and PTN endodontic file system in curved root canal.

Objectives:

To measure and compare the amount of canal transportation (CT) and centring ability (CA) in coronal, middle and apical thirds of root canals prepared using WaveOne Gold File and Protaper next system using CBCT.

Material and Method:

A total of sixty single rooted teeth with Type I Vertucci canal and moderate 10°-30°canal curvature according to AAE guidelines  were collected and divided into two groups; Group 1:  WOG system, Group 2: PTN. Baseline and post-operative CBCT scans were obtained for all the specimens using the same exposure parameters. The CT and CA of each root canal at 3, 6 and 9mm corresponding to coronal, middle and apical third were calculated. The data was analysed using SPSS; IBM version 23.0. The level of significance was kept at 0.05.

Results:

The WOG system exhibited significantly less CT at the level of 6mm compared with the PTN file (p<0.05). The intergroup comparison of CA revealed that WOG exhibited the greater centralization (0.616 ± 0.183) as compared to PTN (0.415 ± 0.433) at 9mm from the apex (p <0.05). However, both the systems revealed comparable outcomes in the apical third (p >0.05).

Conclusion:

WOG resulted in less canal transportation and more centralized preparations in the middle and coronal third of root canals with moderate degree of curvature. Besides, both the file systems observed acceptable range of deviations.

Keywords: Canal transportation, curved root canals, shaping ability, root canal preparation, micro-computed tomography