THE PREVALENCE OF DOUBLE TEETH AND CONGENITAL MISSING TEETH IN PRIMARY DENTITION AND THEIR CORRELATION WITH THE PERMANENT DENTITION

Yang, Kyu-Ho; HLim, Hye-Jeong; Choi, Nam-Ki; Kim, Seon-Mi

Journal of the Korean Academy of Pediatric Dentistry 2007;34(3):447-453.
Published online August 31, 2007.

THE PREVALENCE OF DOUBLE TEETH AND CONGENITAL MISSING TEETH IN PRIMARY DENTITION AND THEIR CORRELATION WITH THE PERMANENT DENTITION

Kyu-Ho Yang, Hye-Jeong HLim, Nam-Ki Choi, Seon-Mi Kim

Department of Pediatric Dentistry, School of Dentistry, Chonnam National University, Dental Research Institute & Second Stage of BK21

유치열의 이중치 및 결손치의 발생빈도와 영구치열과의 상호관계

양규호, 임혜정, 최남기, 김선미

전남대학교 치의학전문대학원 소아치과학교실, 치의학 연구소 및 2단계 BK21 사업단

Correspondence: Kyu-Ho Yang, Tel: 062-220-5476, Email: hellopedo@hanmail.net

Abstract

The purpose of this study was to investigate the relationship between morphology and number of deciduous teeth and the occurrence of other dental anomalies in their successors, and to evaluate the necessity of early diagnosis of dental anomalies in the primary dentition. Prevalence of double teeth and congenital missing teeth was investigated in 254(134 boys, 120 girls) panoramic radiographic films, taken by 2 to 7-year-old children in Chonnam National University Hospital from 2000 to 2005. And then it was examined that relationship of anomalies of the primary dentition and their successors. Among them 11 children(6 boys, 5 girls) had double teeth or missing teeth. And prevalence of the double teeth was 1.6% and missing teeth was 3.1%. One subject had double teeth in in the mandible and missing teeth in the maxilla. Of the 11 cases of dental anomalies in primary dentition, 7 cases had congenital missing tooth in their successors. This study suggests that the dental anomalies in the primary dentition induced high prevalence of the congenital missing of permanent successors in the permanent dentition.

Key Words: Primary dentition, Double teeth, Missing tooth