Symmetry of root and root canal morphology of mandibular incisors: A cone-beam computed tomography study in vivo.

F Valenti-Obino,L Testarelli,G Miccoli,G Gambarini,L Quero,D Di Nardo,M Galli

doi:10.4317/jced.55629

F Valenti-Obino, L Testarelli + Show 5 more

Open Access

https://doi.org/10.4317/jced.55629

Copy DOI

Abstract

BackgroundAim of this study was to analyze the root canal configuration in mandibular central and lateral incisors in vivo using cone-beam computed tomography (CBCT) imaging.Material and MethodsA total of 487 mandibular central incisors and 491 mandibular lateral incisors from 250 patients were examined using CBCT imaging, previously taken for diagnosis and treatment. The number of roots, root canal system configuration, presence of apical confluences, distance between confluences and radiographic root end, symmetry between left and right elements were recorded and statistically analyzed.ResultsAll the examined teeth presented only one root. No significant differences were found between the prevalence of two root canals in mandibular central incisors (219 teeth, 45%) compared to lateral incisors (211 teeth, 43%).ConclusionsThe percentage of Vertucci type II configuration was higher than expected, being more frequent than type III. Type I was the prevalent, while other configurations were present but rare. Key words:Cone-beam computed tomography, mandibular incisors, root canal anatomy, confluences.

Highlights

The study of the anatomy is very important in endodontics, since most of the errors that occur during an endodontic treatment are related to failure in respecting the canal anatomy [1]; the existence of an untreated canal may be a reason of failure [2]
For mandibular central incisors type I Vertucci configuration was present in 55% of cases, type II Vertucci configuration in 34,3% of cases, type III Vertucci configuration in 9,3% of cases, type VII Vertucci configuration in 0,8% of cases and type IV Vertucci configuration in 0,6% of cases
For mandibular lateral incisors type I Vertucci configuration was present in 57% of cases, type II Vertucci configuration in 35,7% of cases, type III Vertucci configuration in 6,9% of cases, type VII Vertucci configuration in 0,4% of cases

Summary

Introduction

The study of the anatomy is very important in endodontics, since most of the errors that occur during an endodontic treatment are related to failure in respecting the canal anatomy [1]; the existence of an untreated canal may be a reason of failure [2]. Tooth configurations are usually classified according to Vertucci and the great majority of studies used this classification; more recently Ahmed and Dummer [6] proposed a new classification It is a more accurate method, based on in vitro microCT evaluations of extracted teeth. The aim of the present study was to analyze in vivo the root canal configuration in mandibular central and lateral incisors using CBCT and Vertucci classification, to assess clinically relevant anatomical features. Aim of this study was to analyze the root canal configuration in mandibular central and lateral incisors in vivo using cone-beam computed tomography (CBCT) imaging. Type I was the prevalent, while other configurations were present but rare

Objectives

Methods

Results

Conclusion