Cone-beam computed tomography analysis of root and canal morphology of mandibular premolars in a Spanish population
Imaging Science in Dentistry
;
: 221-227, 2014.
Article
in English
| WPRIM
| ID: wpr-27041
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 ANDMETHODS:
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tooth
/
Bicuspid
/
Prevalence
/
Tooth Apex
/
Dental Pulp Cavity
/
Cone-Beam Computed Tomography
/
Anatomy, Regional
/
Mandible
Type of study:
Prevalence study
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Imaging Science in Dentistry
Year:
2014
Type:
Article
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