Journal of the Korean Academy of Pediatric Dentistry 2004;31(4):701-704.
Published online November 30, 2004.
BILATERALLY PRIMARY FIRST MOLARS WITH SINGLE ROOT
 
단일 치근을 가진 하악 제1유구치
윤상일, 김성오, 이제호, 손흥규, 최형준
연세대학교 치과대학 소아치과학교실.구강과학연구소
Correspondence:  , 
Abstract
In this case, we would like to discuss about the single rooted deciduous mandibular first molar. The deciduous mandibular molar of a five years old boy was shown to have a single root, bilaterally. Ordinarily, the maxilary molars have three roots and the mandibular molars have two roots. However, when the hertwig's epithelial root sheath do not invaginate properly during tooth development, root fusion can occur from the absence of root separation. Molars with fused roots not only have unfavorable crown to root ratio, but also according to many reports, have higher probability of having multiple congenitally missing teeth or dens invaginatus in the maxillary incisors, consequently requiring preventive dental treatment In addition, disorders such as ectodermal dysplasia, syndactyly, clinodactyly, bluish sclera can also be related to this condition. Root fusion is known to be of autosomal recessive inheritance. Up to date, single rooted molars have been reported several times in permanent dentitions but hardly in deciduous dentition, which is the motive for this paper.
Key Words: Single root, Hertwig's epithelial root sheath


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 © 2025 by Korean Academy of Pediatric Dentistry.

Developed in M2PI

Close layer
prev next