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논문 기본 정보

자료유형
학술저널
저자정보
Llena, Carmen (Department of Stomatology, Universitat de Valencia) Fernandez, Jaime (Fernandez Ugedo y Chaves Clinic) Ortolani, Pablo Sebastian (Department of Stomatology, Universitat de Valencia) Forner, Leopoldo (Department of Stomatology, Universitat de Valencia)
저널정보
대한영상치의학회 Imaging science in dentistry Imaging science in dentistry 제44권 제3호
발행연도
2014.1
수록면
221 - 227 (7page)

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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 $20^{\circ}$ 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 $20^{\circ}$ were found at less than 5 mm from the apex.

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