Deciphering the relative importance of genetic and environmental factors, which play a major role in the prevalence of early childhood caries (ECC), can help clinicians with planning a long-term preventive treatment. The objective of the study was to determine the prevalence and heritability of ECC among monozygotic (MZ) and dizygotic (DZ) twins in Chennai, India, in the year 2013. A cross-sectional study was designed to estimate the prevalence of ECC among twins. Zygosity classification for the survey framework was adapted from a highly accurate parental report questionnaire pertaining to the physical similarity between twins. The associated heritability index was estimated. The Decayed, Missing, Filled Surface (DMFS) Index was used as the diagnostic criterion for dental caries. The prevalence of ECC was estimated at 18.7

作者：Anuradha, Kuppan；Steven, Rodrigues；Victor, Samuel；Mahesh, Ramakrishnan；Hassan S, Halawany；Nimmi B, Abraham；Vimal, Jacob；Sukumaran, Anil

来源：Twin research and human genetics : the official journal of the International Society for Twin Studies 2017 年 20卷 1期