STATEMENT OF PROBLEM: Various aspects of anatomic tooth dimensions have been examined in a number of studies where data are primarily based on the measurements obtained from white subjects. Additional factors such as ethnicity should be considered to produce a more comprehensive analysis. PURPOSE: The purpose of this study is to compare the anatomic crown dimensions of extracted maxillary teeth in Asian and white populations. MATERIAL AND METHODS: The width/length ratio (%) was calculated with standardized digital images of extracted maxillary anterior teeth from 157 Asian and 142 white subjects. Statistical analysis was performed to compare the 4 tooth groups (central incisiors, lateral incisiors, canines, and premolars) of the 2 ethnicities. The distribution of the outcome variables were examined for normality with the Kolmigorov-Smirnov test. Independent sample t tests were used to examine differences in outcomes in Asian and white subjects. RESULTS: There was a significant difference (P<.05) in the width/length ratios of all maxillary anterior teeth in Asian and white subjects. In addition, there was a significant difference in the width of unworn central incisors and the length of worn lateral incisors and canines. CONCLUSIONS: Ethnicity influences width/length ratios for all 4 anterior maxillary teeth. Anterior maxillary teeth in Asian subjects appear to be more slender when compared with those in white subjects.
STATEMENT OF PROBLEM: Various aspects of anatomic tooth dimensions have been examined in a number of studies where data are primarily based on the measurements obtained from white subjects. Additional factors such as ethnicity should be considered to produce a more comprehensive analysis. PURPOSE: The purpose of this study is to compare the anatomic crown dimensions of extracted maxillary teeth in Asian and white populations. MATERIAL AND METHODS: The width/length ratio (%) was calculated with standardized digital images of extracted maxillary anterior teeth from 157 Asian and 142 white subjects. Statistical analysis was performed to compare the 4 tooth groups (central incisiors, lateral incisiors, canines, and premolars) of the 2 ethnicities. The distribution of the outcome variables were examined for normality with the Kolmigorov-Smirnov test. Independent sample t tests were used to examine differences in outcomes in Asian and white subjects. RESULTS: There was a significant difference (P<.05) in the width/length ratios of all maxillary anterior teeth in Asian and white subjects. In addition, there was a significant difference in the width of unworn central incisors and the length of worn lateral incisors and canines. CONCLUSIONS: Ethnicity influences width/length ratios for all 4 anterior maxillary teeth. Anterior maxillary teeth in Asian subjects appear to be more slender when compared with those in white subjects.
Authors: Mohamed Fattouh Abdallah; Omer H Alamoudi; Abdullah Muneer Ali; Raian A Marzogi; Mohammed A Bafaraj; Wahdan Mohammed Abdelghany Elkwatehy Journal: J Int Soc Prev Community Dent Date: 2021-06-10