Position and Distribution of Maxillary Displaced Canine in a Japanese Population: a Retrospective Study of 287 CBCT ScansAhmed Ghoneima1,2,*, Ryuzo Kanomi3 and Toshio Deguchi1
- Corresponding Author:
- Ahmed Ghoneima
Department of Orthodontics & Oral Facial Genetics
Indiana University School of Dentistry, 1121 W. Michigan St. RM 250D
Tel: (317) 278-1653
Fax: (317) 278-1438
Received Date: May 20, 2014; Accepted Date: August 20, 2014; Published Date: August 22, 2014
Citation: Ghoneima A, Kanomi R, Deguchi T (2014) Position and Distribution of Maxillary Displaced Canine in a Japanese Population: a Retrospective Study of 287 CBCT Scans. Anat Physiol 4:153. doi: 10.4172/2161-0940.1000153
Copyright: © 2014 Ghoneima A et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Objective: To assess the position, location, and distribution of maxillary displaced canines in a sample of Japanese population and to develop a classification for the maxillary displaced canine depending on the position in order to facilitate proper diagnosis of this frequently encountered clinical problem.
Methods: Cone beam computed tomographic scans of 287 Japanese orthodontic patients (mean age 11.2 ± 1.8 years) with maxillary displaced canines were collected from private dental clinics in Himeji city, Japan. The maxillary displaced canines were evaluated and classified into ten different groups (Types A-J) according to their position and location.
Results: Type B in which the canine is in a vertical position behind the lateral incisor causing root resorption in the apical one third of the lateral incisor was the most common (47%) followed by Types A and C in which the canine is either impacted in a mesioangular position behind the central incisor root causing root resorption in the apical one third of the central incisor or impacted in a vertical position between the lateral incisor and the first premolar without causing root resorption (17.1% and 16%) respectively. Types I and J were the rarest (0.4%).
Conclusion: Maxillary displaced canines were classified into ten different groups according to their positions and locations because of the high variations. The development and standardization of a defined classification is essential for proper diagnostic and therapeutic considerations.