Journal of the Korean Academy of Pediatric Dentistry 2007;34(4):658-665.
Published online November 30, 2007.
Jeong-Min Son, Nam-Ki Choi, Seon-Mi Kim, Kyu-Ho Yang
Department of Pediatric Dentistry, Chonnam National University School of Dentistry, and Dental Research Institute and Second stage of BK21 
부분 무치증 환아의 증례보고
손정민, 최남기, 김선미, 양규호
전남대학교 치의학전문대학원 소아치과학교실, 치의학 연구소 및 2단계 BK21 사업단
Correspondence:  Nam-Ki Choi,  Tel: 82-62-220-5476, Email:
Oligodontia is defined as the congenital absence of six or more teeth in dentition, excluding the third molars. The prevalence of congenital missing teeth is about 1.6 to 9.6% of population and the prevalence of oligidontia is about 0.08 to 1.1%. The mandibular second premolar is the most frequently absent after the third molar, followed by the maxillary lateral incisor and upper second premolar. Females seem to be affected slightly more than males. Oligodontia may occur either in isolation, or as a part of a syndrome such as ectodermal dysplasia. Different causes are possible for oligodontia: physical obstruction or distruction of the dental lamina, space limitation, functional abnormalities of the dental epithelium, failure of induction of the underlying mesenchyme, chemotherapy, radiotherapy or genetic factor. Because oligodontia would result in esthetic and functional problems, such as facial asymmetry or occlusal disharmony, early diagnosis from clinical and radiographic examination was necessary. And appropriate treatment plan should be followed. This case report was about oral conditions and treatment of the oligodontia patients who have no specific systemic disease.
Key Words: Oligodontia, Congenital missing teeth, Hypodontia

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