The Statistical Study on Primary Fused Teeth and The Corresponding Permanent Teeth by Orthopantomograph

Park,  Byung-Jin; Cho,  Sa-Hyun; Woo,  Won-Sup

J Korean Dent Assoc > Volume 11(5); 1973 > Article

The Journal of The Korean Dental Association 1973;11(5):313-316.
Published online May 31, 1973.

X선에 의한 유합치와 계승치에 관한 통계학적 고찰

박병진¹, 조사현², 우원섭³

^¹서울대학교 치과대학 소아치과학교실
^²서울대학교 치과대학 소아치과학교실
^³서울대학교 치과대학 소아치과학교실

The Statistical Study on Primary Fused Teeth and The Corresponding Permanent Teeth by Orthopantomograph

Byung-Jin Park¹, Sa-Hyun Cho², Won-Sup Woo³

¹Dept. of Pedodontics, School of Dentistry, S.N.U.
²Dept. of Pedodontics, School of Dentistry, S.N.U.
³Dept. of Pedodontics, School of Dentistry, S.N.U.

Abstract

970 children visited attached hospital, S.N.U, were taken orthopantomograph. Of those children, there were 14 patients who have primary fused teeth. The author observed those cases and got following results. 1) Incidence of primary fused teeth was higher in female. 2) In the order of frequency, fused teeth of mandibular right primary lateral incisor and canine were 9 and that of mandibular left primary lateral incisor and canine were 4, and there was only one case in maxillary. 3) 13 cases showed the congenital absence of lateral incisor of the corresponding permanent teeth. 4) Incidence of fused teeth was 1.44%.