Equation for Tooth Size Prediction from Mixed Dentition Analysis for Taiwanese Population: A Pilot Study

See Yen Chong, Lwin Moe Aung, Yu-Hwa Pan, Wei-Jen Chang and Chi-Yang Tsai
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See Yen Chong: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
Lwin Moe Aung: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
Yu-Hwa Pan: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
Wei-Jen Chang: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
Chi-Yang Tsai: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan

IJERPH, 2021, vol. 18, issue 12, 1-10

Abstract: Background: In mixed dentition analysis, estimation of the mesiodistal width of unerupted permanent canines and premolars is essential for successful diagnosis and treatment planning. The present study aimed to develop a simple linear equation to predict permanent tooth sizes from mixed dentition analysis for Taiwanese people. Methods: The sample comprised 200 dental casts, derived from Taiwanese patients (100 males and 100 females; age, 12–35 years). Mesial distal tooth widths were measured in dental casts with a digital caliper. A student’s t -test was conducted to detect tooth size correlations with gender-specific differences, as well as intra-arch counterparts. Standard linear regression was conducted to develop a simple equation representing predictions of canine-premolar relationships. Results: All teeth were not significantly different between the left and right sides, regardless of gender and upper or lower arches. In terms of types of teeth, males had larger tooth dimensions in both arches than females. New regression equations for estimating the dimensions of the unerupted canines and premolars in the Taiwanese population were developed. Conclusions: Using a sample of Taiwanese people, new models derived for females and males separately were developed, which should provide highly accurate predictions for unerupted canines and premolars in the Taiwanese population.

Keywords: mixed dentition analysis; Taiwanese; tooth size prediction; Tanaka–Johnston; Moyers’ probability tables; regression equation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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