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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

RAMIREZ, Luis Miguel; BALLESTEROS, Luis Ernesto  and  PRECIADO, Camilo José. Biometry of Anterior Teeth in Mestizos: Intradental Long / Wide Ratio. Int. J. Morphol. [online]. 2017, vol.35, n.3, pp.1075-1082. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022017000300042.

The intradental length / width ratios have been proposed in more than eleven different models to date. However they have not been studied in the Colombian Mestizo population. Hierarchical clustering models (K-Means) were used to understand which best explains the distribution of the data. Co-variables of sex, age, and mild attrition were also analyzed to assess their influence on overall distribution. Standardized photographs of anterior teeth of 274 individuals of both sexes with fully erupted and healthy teeth were used. Measurements were taken with calibrated software (error of 0.05 mm). Chi square test was used to show that the co-variables sex (p value = 0.09), age (p value = 0.54) and mild attrition (p value = 0.32) had no impact In the distribution of dental proportions. With respect to the analysis of conglomerates through the K-Means, two distinct groups were identified throughout the sample: Vertical proportions (longer teeth) and horizontal proportions (wider teeth). A third group overlapping the two trends we called balanced proportions. There is no universal intraday proportion model that can describe the entire population, but it was possible to find a set of models for different population subgroups. Aesthetic ideals are in open interpretation. Absolute patterns are impractical in biology because they do not predict the complexity of biology.

Keywords : Intradental proportions; Anterior teeth; Models; Mestizos.

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