Journal of the Korean Academy of Pediatric Dentistry 2005;32(4):644-648.
Published online November 30, 2005.
A CASE OF SUPERNUMERARY TEETH IN THE MANDIBULAR INCISOR REGION
 
하악에 발생한 과잉치의 치험례
박정아, 최남기, 김선미, 장희숙, 양규호
전남대학교 치과대학 소아치과학교실 및 치의학 연구소
Correspondence:  , 
Abstract
upernumerary tooth was resulted from excessive proliferation of dental lamina and associated with familial tendency and a congenital syndrome such as Cleidocranial dysostosis or Gardner's syndrome. Incidence reports identify a range of 0.3~0.8% in primary dentition, 1.0~3.5% in permanent dentition with males being affected twice as frequently as females, maxilla nine times as frequently as mandible. The most common supernumerary tooth is the mesiodens, which located between the maxillary central incisors, and the next common site is the fourth molar and lateral incisors. Supernumerary teeth are uncommon in the mandible, but premolars are the most common supernumerary teeth and occurrence is very rare in the incisor region of the mandible and the incidence is 2%. We need a early diagnosis and appropriate treatment plan because of possiblilty of diastema and eruption failure displacement, rotation of the associated permanent teeth, root resorption and dentigerous cyst with presence of the supernumerary teeth. In this two case, one supernumerary tooth located in the mandibular incisor region, the other supernumerary tooth located in premolar region. We could get normal alignment of mandibular dentition by extraction and orthodontic treatment.
Key Words: Supernumerary teeth, Mandibular incisor, Mandibular premolar


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