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KMID : 0358120010270030233
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Journal of the Korean Public Health Association
2001 Volume.27 No. 3 p.233 ~ p.240
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Prevalence of Congenital Missing Teeth in Korea
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Park Eun-Jie
Lee Shin-Jae
Kong Khy-Doo
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Abstract
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Congenitally missing is one of the most prominent dental defects identified during systematic dental screening of groups of patients attending a community dental health service. The purposes of this study were to evaluate the prevalence of congenitally missing teeth and to compare the difference between sexes as well as pattern of malocclusion. For our study, 925 Korean samples (mean age 12.9; male 348, female 577) who visited dental office, were examined with an orthopantomographic radiograph. The prevalence of congenital missing teeth was found to be 12.790. About sixty percent were missing only one tooth while 3.2% were missing five or more teeth. More teeth were missing in the mandible than in the maxilla. The most frequently missing teeth were the lower second premolars, representing 32% of the congenitally missing teeth. Though more teeth were congenitally missing in females than in males, there was no statistical significance. Differences among Angle´s classification were found and this suggests an effects of congenital missing on the malocclusion. This study indicated that there was 0.22 congenital missing tooth per each person on the average. Therefore, this findings largely confirm that dental radiographic screening and careful consideration of the congenital missing teeth is important to maintain oral health and esthetics in the early childhood.
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KEYWORD
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cogenital missing, malocclusion, prevalence
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