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Journal of the Korean Academy of Pediatric Dentistry 2010;37(1):102-108.
Published online February 28, 2010.
ERUPTION DISTURBANCE OF THE LOWER LEFT FIRST PERMANENT MOLAR CAUSED BY AMELOBLASTIC FIBROMA
Seunghye Kim1, Je Seon Song2, Heung-Kyu Son2, Hyung-Jun Choi2, Jae-Ho Lee2
1Department of Pediatric Dentistry, College of Dentistry, Yonsei University
2Department of Pediatric Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University 
법랑모세포섬유종에 의한 하악 제1대구치의 맹출 장애
김승혜1, 송제선2, 손흥규2, 최형준2, 이제호2
1연세대학교 치과대학 소아치과학교실
2연세대학교 치과대학 소아치과학교실 및 구강과학연구
Correspondence:  Jae-Ho Lee,  Tel: 02-2228-3173, Email: leejh@yuhs.ac
Received: 10 November 2009   • Accepted: 9 February 2010
Abstract
Impaction is the cessation of eruption process caused by physical obstacles on the eruption pathway, abnormal tooth position, or lack or space. It often occurs in association with supernumerary teeth, odontogenic tumor, or cystic lesions, and ameloblastic fibroma is one of the odontogenic tumors that can cause impaction of teeth. In many cases, ameloblastic fibroma occurs in association with one or more unerupted teeth. The proper management of ameloblastic fibroma is determined between conservative resection or more aggressive block resection, based size and morphologic features of the lesion and age of the patient. This is a case of a 8 year and 6 month old boy whose lower left permanent molar showed eruption disturbance. The impacted tooth was successfully repositioned favorably through surgical exposure and orthodontic traction using a modified halterman appliance. Long term follow-up, longer than 10 years, is planned considering relatively high recurrence rate and possibility of malignant transformation of ameloblastic fibroma, which cause impaction of the lower left permanent molar in this case.
Key Words: Impaction, Ameloblastic fibroma, Modified halterman appliance
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