Cone-beam computed tomographic evaluation of the root canal anatomy of the lower premolars and molars in a Brazilian sub-population.
Imaging Sci Dent
; 53(1): 77-82, 2023 Mar.
Article
em En
| MEDLINE
| ID: mdl-37006788
ABSTRACT
Purpose:
This study evaluated anatomical variations in the root canals of the lower premolars and molars in a Brazilian sub-population using cone-beam computed tomography (CBCT). Materials andMethods:
In total, 121 CBCT images of patients were selected from a database. All images contained lower first and second premolars and molars on both sides of the arch, fully developed roots, and no treatment, resorption, or calcifications. In each image, the root canals of the lower premolars and molars were evaluated according to the Vertucci classification in On-Demand 3D software in the multiplanar reconstruction with dynamic navigation. Twenty-five percent of the images were re-assessed to analyze intraobserver confidence with the kappa test. Data were statistically evaluated with linear regression to evaluate the correlations of anatomic variations with age and sex, and the Wilcoxon test to analyze the laterality of variations, with a significance level of 5%.Results:
The intraobserver agreement (0.94) was excellent. In general, the root canals of lower premolars and molars showed a higher prevalence of type I than other Vertucci classification types, followed by type V in premolars and type II in molars. When the molar roots were evaluated separately, type II was more frequent in mesial roots and type I in distal roots. Although age showed no correlations with the results, sex and laterality showed correlations with tooth 45 and the lower second premolars, respectively.Conclusion:
The lower premolars and molars of a Brazilian sub-population showed a wide range of root canal anatomic variations.
Texto completo:
1
Base de dados:
MEDLINE
Tipo de estudo:
Risk_factors_studies
País como assunto:
America do sul
/
Brasil
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article