[Simplified gingival index for ages 4 to 6 and 7 to 10. (Deciduous and mixed dentition)].

The main purpose of this research is to obtain an simplified gingival index. Four hundred and twenty children, both sexes 4 to 10 years of age were selected. They are divided in two groups: 4-6 years and 7-10 years. For gingival index, the criteria based on SCHOUR & MASSLER, 1947, were used. To obtain the total data of the studied conditions, a simplification of the total index was performed. For the ages 4 to 6 years, we selected labial surfaces of the 54, 61, 75, 82. For the ages 7 to 10 years, we added the labial surfaces of 26 and 46. The means for the total and simplified index were obtained for each age group sex. The data were analysed by Pearson's correlation coefficient and linear regression. In both dentitions, the simplified index showed significant correlation with the total index.