Journal of the Korean Academy of Pediatric Dentistry 2009;36(1):84-88.
Published online February 28, 2009.
ORTHODONTIC TRACTION OF THE LOWER DECIDUOUS SECOND MOLAR IMPACTED BY AN ODONTOMA
Yoon-Beum Han, Seong-Oh Kim, Jae-Ho Lee, Hyung-Jun Choi, Hyung-Kyu Sohn, Byung-Jai Choi
Department of Pediatric Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University 
치아종에 의해 매복된 하악 제2 유구치의 교정적 견인
한윤범, 김성오, 이제호, 최형준, 손흥규, 최병재
연세대학교 치과대학 소아치과학교실, 구강과학연구소
Correspondence:  Byung-Jai Choi,  Tel: 02-2228-8800, Email: bjchoi@yuhs.ac
Received: 16 September 2008   • Accepted: 3 November 2008
Abstract
Tooth impaction refers to situations where a tooth fails to erupt due to mechanical blocking and remains unerupted beyond the normal time of eruption. It is commonly found in permanent dentition, but rarely in deciduous dentition. Tooth impaction is caused by systemic or local factors, and most common etiology is odontoma. Odontoma is also commonly found in permanent dentition, and rarely in deciduous dentition. We are presenting case of 4 year and 4 month year old girl, who had impacted and disto-angulated lower left deciduous second molar due to odontoma. We removed odontoma and performed orthodontic traction of impacted lower left deciduous second molar. Then, the impacted primary molar was erupted and acceptable occlusion was obtained.
Key Words: Tooth impaction, Odontoma, Deciduous dentition


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