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Comprehensive intermaxillary tooth width proportion of Bangkok residents
Somchai Manopatanakul1, Narumon Watanawirun
1Department of Hospital Dentistry, Mahidol University, Rajthewe,Bangkok, Thailand. dtsmp@mahidol.ac.th
Brazilian Oral Research
|May 4, 2011
Summary
Tooth width ratios, or comprehensive cumulative percentage ratios (CPRs), differ significantly between racial groups. These findings emphasize the need for race-specific CPRs in dental analysis to ensure proper occlusion.
Area of Science:
- Dentistry
- Anthropology
Background:
- Proper occlusion relies on accurate tooth width ratios, such as Bolton's ratio.
- Comprehensive cumulative percentage ratios (CPRs) assess tooth size discrepancies and aid in analyzing agenesis.
- Existing CPR data is primarily based on Caucasian populations, overlooking potential racial variations.
Purpose of the Study:
- To measure tooth size disproportion in Thai patients (Bangkok residents).
- To calculate a specific set of CPRs for this population.
- To compare Thai CPRs with those of Caucasian populations.
Main Methods:
- Dental models from 37 Bangkok residents with normal occlusion were used.
- Mesiodistal tooth width was measured for each tooth.
- Intra- and inter-examiner measurement errors were assessed and found to be insignificant.
Main Results:
- Comprehensive cumulative percentage ratios (CPRs) were calculated for the Thai population.
- Ten out of thirteen CPRs showed significant differences compared to Caucasian data.
- This indicates a statistically significant variation in tooth width ratios between the studied racial groups.
Conclusions:
- Tooth width ratios exhibit significant variation across different racial groups.
- Race-specific CPRs are essential for accurate dental analysis and treatment planning.
- The study recommends calculating CPRs tailored to specific patient racial groups.
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