Structural and health evaluation of first permanent molar status in elementary school children

The first permanent molar is one of the most important teeth in the cycle of eruption. It can involve complication due to the time of eruption and its particular condition in the jaws. The purpose of this study was structural and healthy evaluation of the first permanent molar in school girls and boys in Mashhad in 1386. In this cross-sectional study 700 school girls and boys were examined. The samples were selected in a cluster-stratified method. The different condition on the first permanent molar was registered in examination form. The results were statistically analyzed by Chi-Square and Kruscal Wallis tests. In school girls, the statistical analysis showed a significant increase of decay, filling, extracted tooth, mesially drift, hypoplasia and hypo calcification of the first permanent molar in the lower jaw. Extrusion and erupting teeth were significantly higher in upper jaw. In school boys, the statistical analysis showed a significant increase of decay, filling, mesially drifts, and erupting teeth in the lower jaw. Extrusion was significantly higher in upper jaw. In contrast between two groups decay, extrusion, mesially drift, hypoplasia and hypo calcification of the first permanent molar were significantly higher in girls, but the amounts of fissure sealant was higher in boys. Decay, filling, extrusion were significantly increased by the age. The amounts of fissure sealant therapy among the teeth, which the treatment was necessary for them, were low in this study. Based on the results of the present study, high rate of decay, insufficient attention to dental prevention and noticeable amount of structural defects observed in permanent teeth in mixed dentition period, which needs more attention.