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Title: Occlusal status in Asian male adults: Prevalence and ethnic variation
Authors: Soh, J. 
Sandham, A.
Yiong, H.C.
Keywords: Angle's molar classification
BSI incisor classification
Issue Date: 2005
Citation: Soh, J.,Sandham, A.,Yiong, H.C. (2005). Occlusal status in Asian male adults: Prevalence and ethnic variation. Angle Orthodontist 75 (5) : 814-820. ScholarBank@NUS Repository.
Abstract: The purpose of this study was to determine the occlusal status in young Asian male adults of three ethnic groups. Study models of a sample of male army recruits (N = 339, age 17-22 years) with no history of orthodontic treatment were assessed. The ethnic proportions of the sample were Chinese 76.1% (n = 258), Malay 17.7% (n = 60), and Indian 6.2% (n = 21). British Standard Institute (BSI) and Angle's classification were used to determine incisor and molar relationships, respectively. Chi-square test or Fisher's Exact test was performed to compare the occlusal traits between ethnic groups. The distribution of incisor relationships of the total sample consisted of Class I = 48.1%, Class II/1 = 26.3%, Class II/2 = 3.2%, and Class III = 22.4%. Right Angle's molar relationships were 49.9%, 24.5%, and 24.2% whereas left Angle's molar relationships were 53.1%, 25.1%, and 21.2% for Class I, II, and III, respectively. Comparison between ethnic groups found that Indian subjects were more likely to have Class II/1 malocclusions and clinically missing permanent teeth (P < .05). The study found that the overall prevalence of malocclusion (BSI) was Class I, Class II/1, Class III, and Class II/2 in descending order of proportions. Angle's Class I molar was most prevalent followed by Class II and Class III relations. A significant difference in occlusal status between the ethnic groups was found regarding incisor relationship and missing permanent teeth (P < .05). © 2005 by The EH Angle Education and Research Foundation, Inc.
Source Title: Angle Orthodontist
ISSN: 00033219
Appears in Collections:Staff Publications

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