Dental caries in 280 pairs of same-sex twins
Gao, X.J.
Zhonghua Kou Qiang Yi Xue Za Zhi 25(1): 18-20; 61
1990
ISSN/ISBN: 1002-0098 PMID: 2114259 Document Number: 351113
The dental caries in 280 pairs of like-sex twins (186 monozygotic, 94 dizygotic) were studied. Then, comparisons of variability of dental caries, missing and filled surface (DMFS), concordance, and correlation in the two types of twins were made. The heritability index (HI) was also calculated. There were less variance, higher concordance and higher correlation in monozygotic twins, but the results were not statistically significant. The HI of dental caries was 8.7% according to this study. It was suggested that environmental influence was dominant in caries initiation: whereas heredity was of little influence.