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A CLINICAL STUDY ON THE CONGENITALLY MISSING TEETH IN MESIODENS CASES

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Abstract

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Mesiodens is developmental tooth anomaly which is commonly found in clinical pediatric dentistry. however, it may cause many partial problem in tooth alignment when congenitally missing teeth was accompanied by mesiodens. The terms, concomitant hypodontia and hyperdontia¢¥ and oligo-pleiodontia¢¥ have been used to describe the condition in witch developmental absence of teeth and supernumerary teeth are present in the same individual.
Only a few case reports of this rare condition which is opposite developmental phenomena exist in the literature. The purpose of this study is survey of congenitally missing teeth in mesiodens case and to compare previous literature of congenitally missing teeth in normal.
The subjects were 310 children(247 male and 63 female) at the age from 5 to 12 years visiting the Department of Pediatric Dentisrty, Pusan National University Hospital with mesiodens for last 3 years. With their pantomograms we studied congenitally missing teeth except permanent 3rd molar.
1. The preference of congenitally missing teeth in mesiodens cases was revealed to be 17.1%(53 out of 310 in total), and there was a higher prevalence in females(22.2%) than in males(15.8%).
2. The most frequently missing teeth were maxillary lateral incisors(22.7%) and mandibular second premolars(22.7%), followed by maxillary second premolar(17.3%), and mandibular lateral incisors (16.0%). There was no significant differences between maxilla(49.3%) and mandible(50.7%).
3. In number of congenitally missing teeth per person, 69.9% had one missing tooth, 22.7% had two missing teeth and 9.4% had three missing teeth.

Å°¿öµå

Á¤Áß °úÀ×Ä¡;¼±Ãµ °á¼ÕÄ¡;¹ß»ýºóµµ;Mesiodens;Congenitally missing teeth;Prevalence

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