Biometric study of human teeth

Carlos Alberto Gregório CABRERA, Arnaldo PINZAN, Marise de Castro CABRERA, José Fernando Castanha HENRIQUES, Guilherme JANSON, Marcos Roberto de FREITAS

Objectives: To determine the biometric dimensions of human teeth in the mesiodistal, buccolingual and occlusal/incisal-cervical directions. Methods: It was used a sample of dental casts from 57 patients, i.e., 31 females with a mean age of 15 years and 5 months, and 26 males with a mean age of 16 years and 6 months. The sample was previously qualified by adopting the criteria established by Andrews? six keys to normal occlusion, whose values were matched to the variations obtained by Bolton. Two examiners used a digital caliper with original (short) and modified (long) tips. Results and Conclusions: After statistical analysis of the data it was concluded that the teeth were shown to be symmetrical in the dental arches of both genders. Tooth dimensions are smaller in females than in males and should therefore be studied separately. Overall mean values were obtained and used to build tables distinguishing such dimensions according to gender. Mean values for the three tooth dimensions, occurrence rates of these dimensions and their standard deviations were also calculated. These values allowed the development of an equation called ?C? equation as well as ?C? percentile tables. With the aid of both, it became possible to measure only one dimension of a given tooth to find the other two ?probable? dimensions of the other teeth in the dental arches.

Keywords: Tooth dimensions. Tooth proportions. Tooth size.

How to cite: Cabrera CAG, Pinzan A, Cabrera MC, Henriques JFC, Janson G, Freitas MR. Estudo biométrico em dentes de humanos. Dental Press J Orthod. 2011 July-Aug;16(4):111-22.

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