Original scientific paper
Taurodontism in Down’s Syndrome
Ilija Škrinjarić
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Ivana Bagić
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Domagoj Glavina
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Marijan Gašpar
; Dom zdravlja »Petar Vitezica«, Split, Hrvatska
Abstract
The prevalence o f taurodontism was studied in a sample o f 46 patients (21 males and 25 females) with chromosomally verified trisomy 21 or Down’s syndrome (DS). Orthopantomograms were taken from all patients under standardized conditions. A total number
o f 294 permanent molars (149 in maxilla, and 145 in mandible) were analyzed. The diagnosis and classification o f taurodontism were made on the basis o f a method described by Shifman and Chanannel (1978). Taurodontism was found in 69.57% o f study subjects, and in 27.89% o f all molars analyzed. Bilateral occurrence o f the anomaly was nearly 50%, while about 25% o f taurodontic teeth were found on either left or right side o f the jaw. There were no significant sex differences in the frequency o f taurodontism affecting individual molars, except for the second mandibular molar, which was more frequently affected in females (t = 2.85; P<0.01).Pyramidal molars were found in 15.6%, hypotaurodontism in 7.8%, and mesotaurodontism in 4.4% o f all teeth analyzed. High prevalence o f taurodontism in DS patients could be attributed to the disturbed tooth development caused by extra-chromosomal material.
Keywords
Down’s syndrome; taurodontism; pyramidal molars
Hrčak ID:
100696
URI
Publication date:
15.9.1992.
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