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Genetic Epidemiology came into existence slowly by rapprochment between the epidemiologically oriented geneticists and by genetically oriented epidemiologist. Neel and Schull in 1954 presented the first account of Genetics and epidemiology and introduced it as 'Epidemiological genetics', presenting it in a manner in which genetic concepts became an integral part of the armamentarium of modern epidemiologist. Genetic epidemiology is the study of the role of genes and environment on markers of health and disease risk in populations. It makes an attempt to identify the of risk factors...

Dental caries is a multi-factorial disease. The process by which tooth can be destroyed in the oral cavity, which is indestructible otherwise, is very difficult to understand. Till today, no single theory can explain the phenomenon of caries. Numerous references of dental caries, including early theories to explain the mechanism of caries have been found in history books. The changing nature of the disease process has therefore accentuated the need for more precise detection methods. Unfortunately, because of the nature of disease process in the past, the currently available diagnostic...