Cone-beam computed tomography analysis of root and canal morphology of mandibular premolars in a Spanish population.
10.5624/isd.2014.44.3.221
- Author:
Carmen LLENA
1
;
Jaime FERNANDEZ
;
Pablo Sebastian ORTOLANI
;
Leopoldo FORNER
Author Information
1. Department of Stomatology, Universitat de Valencia, Valencia, Spain. llena@uv.es
- Publication Type:Original Article
- Keywords:
Bicuspid;
Mandible;
Anatomy, Regional;
Cone-Beam Computed Tomography
- MeSH:
Anatomy, Regional;
Bicuspid*;
Cone-Beam Computed Tomography*;
Dental Pulp Cavity;
Female;
Humans;
Male;
Mandible;
Prevalence;
Tooth;
Tooth Apex
- From:Imaging Science in Dentistry
2014;44(3):221-227
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study aimed to investigate the clinical anatomy of lower premolar roots in a Spanish population by using cone-beam computed tomography (CBCT), correlating findings with patient gender and tooth type. MATERIALS AND METHODS: Using 70 CBCT images, we evaluated 126 healthy, untreated, well-developed lower premolars. The number and morphology of roots and root canals, and the foramina number were assessed. Results for gender and tooth type were compared using the chi-squared and ANOVA tests. RESULTS: The average length of teeth and roots was significantly higher in men (p=0.00). All 126 premolars had a single root. One canal was found in 83.3% of the premolars, with no gender or tooth type differences; Vertucci configuration types I and V were the most prevalent. The first premolars showed significantly greater variability than the second premolars (p=0.03). A single apical foramen was found in 89.7% of the premolars, with no differences by tooth type. Women had a significantly higher prevalence of two apical foramina than men (p=0.04). Some degree of curvature was observed in 65% of the premolars, with no differences by gender or tooth type. A root angle of more than 20degrees was found in 12.98% of the premolars, without any differences by gender or tooth. CONCLUSION: All premolars were single-rooted. One canal had the most prevalent morphology. More variability in canal anatomy was found in the first premolars. Curvatures greater than 20degrees were found at less than 5 mm from the apex.
