Journal of the Korean Academy of Pediatric Dentistry 2013;40(4):260-267.
Published online November 30, 2013.
Three Dimensional Analysis of Maxillary Mesiodens Using Dental CBCT and Relationship Between the Mesiodens and Diastema
Eunjoo Kang, Namki Choi, Seonmi Kim
Department of Pediatric Dentistry, School of Dentistry, Chonnam National University 
치과용 CBCT를 이용한 상악 정중치의 3차원 분석 및 정중치와 정중이개와의 관계분석
강은주, 최남기, 김선미
전남대학교 치의학전문대학원 소아치과학교실
Correspondence:  Seonmi Kim,  Tel: +82-62-530-5668, Fax: +82-62-530-5669, Email:
Received: 19 March 2013   • Accepted: 10 September 2013
The aim of this study was to analyze the three dimensional characteristics of the size, shape and location of mesiodens and their effect on permanent teeth arrangement using Cone-beam computed tomography(CBCT). 191 patients under 15 years old who had visited the hospital between June 2006 and December 2012 and taken CBCT were investigated. Among them, 43 patients with diastema were analyzed to investigate the correlation between the amount of diastema and the mesiodens. The results showed that mesiodens were found in males 3.9 times more than females and found most in 7 years old. The mean length of mesiodens was 13 mm and the width was 6.8 mm. The conical shape comprised of 52.9%. Many mesiodens were located in the palatal side rather than the labial side and located vertically near the crown. 63.0% of mesiodens were reversed and the common complications were delayed eruption followed by diastema, and teeth rotation. And the amount of diastema had correlation with size and mesiodistal position of the mesiodens. The current study used 3D analysis to show the size and position of mesiodens and occurrence distribution of complication. Among these, the amount of diastema had shown the correlation with the size and mesiodistal position of mesiodens.
Key Words: Mesiodens, Complications, Diastema, CBCT

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