Bolton's ratios and tooth-size discrepancies in a Nigerian population
DOI:
https://doi.org/10.61172/ndj.v18i1.153Keywords:
Tooth size discrepancy, Bolton’s ratiosAbstract
Objective: The aim of this study was to determine the Bolton's ratios and tooth size discrepancies in a Nigerian population.
Method: The Bolton tooth size analysis was performed on 54 dental casts of Nigerian subjects comprising 33 (61%) males and 21 (39%) females (mean 26.6 ± 2.1 years). The overall and anterior tooth size ratios were determined, and gender differences among the sample population was evaluated with t-test. The frequency and magnitude of deviation of the
Nigerian subjects outside 2 standard deviations from the Bolton's mean was also determined.
Result: The result revealed no statistically significant gender differences in interarch tooth size ratios (p> 0.05) and the measurement for both males and females were therefore combined.
The overall ratio was 92.1% ± 2.35 and anterior ratio was 78.9% ± 2.64. The overall tooth size discrepancy was present in 9.3% and the 25.9% of the subjects had anterior tooth size discrepancy in relations to more than 2 standard deviations from the Bolton's mean values.
Conclusion: The study provided data on tooth size ratios among Nigerian subjects whose values were larger than Bolton's data. This study re-emphasized the importance of developing standards for each population.
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Copyright (c) 2010 E. O. Ajayi
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Copyright © 1999 The authors. This work, Nigerian Dental Journal by Nigerian Dental Association is licensed under Creative Commons Attribution 4.0 International License.