Comparative study of DMFT index between Monozygotic and Dizygotic twins

The role of genetic factors in etiology of dental caries is not clear. It seems that twins studies provide valuable material. Thus the aim of the present study was comparison of the total caries experience (DMF and dmf) of 21 pairs of monozygotic twins with that of 29 pairs of dizigotic twins. Methods & Materials: In this descriptive and analytical study, twenty on pairs of monozygotic twins and 29 pairs of dizigotic twins were examined. Determination of zygosity blood group, similarity of a physical features was done. DMF, dmf and Debri Index were determined. T and Spearman correlation tests were used to compare the differences. Results revealed no significant differences in intra and inter pair between the groups. Although, resemblance in DMFT between monozygous twins was greater on the other hand. Debri index and consumption of cariogenic food had highly significant differences in subjects. It can be concluded that environmental factors are major one’s in the etiology of dental caries.