| DENTAL CARIES PATTERNS IN THE PRIMARY DENTITION: A CLUSTER ANALYSIS AND A MULTIDIMENSIONAL SCALING ANALYSIS |
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Seung-Yeol Jeong, Kwang-Hee Lee, Ji-Young Ra, So-Youn An, Yun-Hee Kim |
| Department of Pediatric Dentistry, College of Dentistry, Wonkwang University |
| 군집분석과 다차원척도법으로 본 유치열의 우식패턴 |
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정승열, 이광희, 라지영, 안소연, 김윤희 |
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원광대학교 치과대학 소아치과학교실 |
Correspondence:
Kwang-Hee Lee, Tel: 063-859-2955, Email: kwhlee@wonkwang.ac.kr
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Received: 4 March 2010 • Accepted: 11 May 2010 |
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| Abstract |
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The purpose of this study was to identify patterns of caries in the dentition of preschool children using cluster analysis and multidimensional scaling. 815 preschool children aged 36-71 months old were examined for caries experience. The first four clusters in the cluster analysis were (1) molars, (2) upper incisors, (3) lower 1st molars, and (4) upper 1st molars in teeth, (1) occlusal surfaces of lower molars and upper 2nd molars, (2) mesial surfaces of upper central incisors, (3) occlusal surfaces of lower 1st molars, and (4) separation between occlusal surfaces of upper and lower 2nd molars in tooth surfaces, and (1) proximal surfaces of upper anterior teeth, (2) occlusal surfaces of lower molars, (3) buccolingual surfaces of upper anterior teeth and (4) buccolingual, proximal, and occlusal surfaces of upper molars and buccolingual and proximal surfaces of lower molars in tooth surfaces groups. In the multidimensional scaling analysis, teeth could be divided into lower 1st molars, upper 1st molars, upper central incisors, upper lateral incisors, lower 2nd molars, upper 2nd molars, and the rest(canines, lower incisors), tooth surfaces could be divided into occlusal surfaces of lower molars, mesial surfaces of upper central incisors, occlusal surfaces of upper molars, and the rest, and tooth surface groups could be divided into proximal surfaces of upper anterior teeth, buccolingual surfaces of upper anteiror teeth, occlusal surfaces of lower molars, and the rest in the order of the distance from others. In the cluster analysis and the multidimensional scaling analysis, caries patterns were different according to the age. |
| Key Words:
Cluster analysis, Multidimensional scaling analysis, Primary dentition, Caries pattern |
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