Journal of the Korean Academy of Pediatric Dentistry 2006;33(4):722-727.
Published online November 30, 2006.
TRANSPOSITION OF THE IMPACTED PRIMARY SECOND MOLAR AND THE TOOTH GERM OF SECOND PREMOLAR
경희대학교 치과대학 소아치과학교실 
매복된 제 2유구치와 제 2소구치 치배의 전위에 관한 증례 보고
김송이, 최성철, 김광철, 이긍호, 최영철, 박재홍
경희대학교 치과대학 소아치과학교실
Correspondence:  , 
Abstract
Most of impacted teeth reported are permanent teeth. Impaction of primary tooth caused by primary failure of eruption is rare and the most of impacted primary tooth are second primary molars. The etiology of a primary molar impaction would appear to be a physical barrier, early ankylosis of the tooth, abnormal development of the primary molar germ or malposition of the successor bud. Transposition has been described as an interchange in the position of two teeth within the same quadrant of the dental arch. It is most commonly seen with canine and lateral incisor teeth, but is rarely associated with the primary dentition. The two cases show the transposition of impacted primary molar and the tooth germ of second premolar in their clinical and radiographic examinations. In case 1, lower second primary molar was deeply impacted inferiorly to the tooth germ suspected to be a second premolar. In case 2, impacted all second primary molars were positioned inferiorly to the tooth germs suspected to be the successors. We extracted all second primary molars under general anesthesia and the extracted tooth germs appeared to be second premolars.
Key Words: Impaction, Primary second molar, Transposition, Second premolar


ABOUT
BROWSE ARTICLES
EDITORIAL POLICY
FOR CONTRIBUTORS
Editorial Office
Seoul National University, Dental Hospital, B1-166 101, Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
Tel: +82-70-4145-8875    Fax: +82-2-745-8875    E-mail: info@kapd.org                

Copyright © 2024 by Korean Academy of Pediatric Dentistry.

Developed in M2PI

Close layer
prev next