Objective:

To determine the prevalence of occlusal worn on the deciduous dentition of 6 years old students in a determined Mexican population.

Methods:

52 plaster models of 6 years old children were assessed, on which the facets found in deciduous teeth, as terminal planes were registered. The Student t-test statistics and Chi-square test were used for data analysis.

Results:

The number of worn pieces was significantly higher in male than female children. The number of faceted parts by tooth type in each gender differed signifi cantly. The faceted infant pieces average did not differ signifi cantly between straight and mesial terminal plane. Nevertheless, trend (P<0.10) was obtained at a greater number of parts in the mesial faceted plane (13.71 ± 2.46; n2=14) than in the straight terminal plane (11.68 ± 4.30; n1=19).

Conclusion:

The evaluation of occlusal worn in the deciduous dentition in children affects equally both genders. There is a greater prevalence of worn by chewing movement on certain teeth and it differs according to gender.

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