Características oclusais normais em crianças em fase de dentição decídua

Abstract

This study aimed to describe the normal occlusal characteristics, the frequency of malocclusion and orthodontic treatment need in children in the deciduous dentition phase, aged among 3 and 5 years old. There were examined 67 children with a mean age of 4.4 years old (0.8 years). 55.2% (n=37) of the sample were female. The frequency of type mesial step molar ratio was the most frequent, 46.3% (n=67), compared to the flush, with 37,3% (n=67). The type I canine relationship was seen in 74,6% of the sample. Primate spaces were present (in both arches) in the 56,7% patients examined. Regarding the type I Baume’s arch was the most commonly found, 71,6%, while type II arch was seen in 28.4%. The normal overjet and overbite (up to 2mm) were identified at 62.7% e 64.2%, respectively. In the most patients, primate spaces were present in both arches. Thirty-two patients had excessive spacing in the anterior region. 62.7% of the sample having been identified normal occlusion. It was concluded that the relationships of the primary canine and second molars were favorable in most of the cases. The frequencies of arch type I and primates spaces were high.