Dental arch morphology of Mazahua and mestizo teenagers from central Mexico|
Lara-Carrillo, Edith; González-Pérez, Juan Carlos; Kubodera-Ito, Toshio; Montiel-Bastida, Norma Margarita & Esquivel-Pereyra, Gema Isabel
The aim of this study was to determine the morphologic characteristics of the dental arches in the ethnic
group "Mazahua" and mestizo teenagers from central Mexico.
A sample of 80 Mazahua and 80 mestizo
teenagers with normal occlusion, divided into two age groups, were evaluated. A digital caliper was used to measure
in cast models the intercanine width, intermolar width, length and perimeter of the arch, occlusal intermaxillary
curve (of Spee), overjet, and overbite. A comparative analysis with Student’s t-test was applied between gender
and population groups.
Comparison of the dental arches between Mazahua and mestizo teenagers
revealed that statistically significant differences existed with respect to most of the measurements. In most cases,
they were greater in males; the Mazahua teenagers had intercanine and intermolar widths greater than mestizo
Each group has a characteristic dental arch form. The ethnic group Mazahua has squared
arches, whereas the mestizo teenagers have oval arches, which give them their particular facial characteristics.
These findings indicate that population-specific standards are necessary for clinical assessments.
dental arch, odontometry, ethnic groups