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Volume 15 , Issue 3
May/June 2002

Pages 283–288


A Multicenter Interracial Study of Facial Appearance. Part 2: A Comparison of Intraoral Parameters

Edward G. Owens, B Dent Sc, Charles J. Goodacre, DDS, MSD, Poey Ling Loh, BDS, MSD, Gilberto Hanke, DDS, MSD, Mitsunobu Okamura, DDS, MSD, Kwang-hun Jo, DDS, DDSc, Carlos A. Muñoz, DDS, MSD, W. Patrick Naylor, DDS, MPH, MS


PMID: 12066492

Purpose: This article compares interracial or gender differences of six intraoral dental parameters among six racial groups (African American, Caucasian, Chinese, Hispanic, Japanese, and Korean). Materials and Methods: The same 253 patients participating in part 1 were included in this portion of the study to evaluate six intraoral parameters. The data were collected and analyzed using a one-way analysis of variance, followed by the Tukey-Kramer test for honestly significant difference when statistically significant differences were found (P < .05). Results: Women displayed significantly more gingival tissue in four of the six races, and African Americans displayed significantly more gingival tissue than any other race. Women had significantly more missing teeth than men in three of the six races studied. Japanese subjects had significantly fewer missing teeth and smaller maxillary central incisors than all other groups except Caucasians. Women had significantly narrower maxillary central incisors in three of the races. There was a significantly higher prevalence of Angle Class III relationships in Chinese subjects. The Japanese had significantly more Class II molar relationships than other races. Conclusion: Racial and gender differences were found in gingival tissue display, the number of missing teeth, maxillary right central incisor crown width, and Angle molar classification, but not in the amount of vertical or horizontal overlap of the anterior teeth. Int J Prosthodont 2002;15:283–288.


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