MESIODENS IN THE VAULT OF THE PALATE

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Journal of the Korean Academy of Pediatric Dentistry 2005;32(4):670-674.
Published online November 30, 2005.

MESIODENS IN THE VAULT OF THE PALATE

상악 구개측 중앙부에 매복된 과잉치

민성진, 김성오, 이제호, 곽지윤, 최병재, 최형준

연세대학교 치과대학 소아치과학교실 구강과학연구소

Correspondence: ,

Abstract

Supernumerary tooth develops as a result of abnormal proliferation of the dental lamina during the initiation stage of dental development. It could be a sporadic occurrence or a hereditary transmission. Supernumerary tooth occurs with a frequency of 1 to 3%. Generally, there is a 2:1 preference for boys. It is usually found in the anterior portion of the maxilla and may be associated with complications such as impaction, malposition of permanent teeth, formation of diastema, cysts and eruption into nasal cavity, The position of supernumerary tooth found in the anterior portion of the maxilla is determined by the axis of the tooth. One third of supernumerary tooth in the anterior portion of the maxilla has no possibility of eruption due to its invertedly impacted position. However, as long as the coronal part of the follicle remains intact, migration of supernumerary tooth is possible. The migration may occur into the palate, the premolar region, the sinus or the nasal cavity. Also, growth of vertical dimension of maxilla could make surgical approach difficult as time goes by For this reason, we have found invertedly impacted mesiodens moved to the vault of the palate in the two cases, and extracted supernumerary tooth surgically.

Key Words: Supernumerary tooth, Tooth migration, Tooth eruption