“…As early as 1933, a relationship was reported between the caries experience of the decidu ous dentition and the permanent first molars [Frenzel, 1933]. Later studies have confirmed the existence of a relationship between the caries experience in both dentitions [Bruszt, 1959;Hill et al, 1967;Mansbridge, 1967;Adler, 1968;Poulsen and Holm, 1980;Raadal et al, 1984], Several studies have also shown a relation ship between caries experience and caries increment in the permanent dentition [Koch, 1970;Sutcliffe, 1973;Birkeland et al, 1976;De Liefde, 1982], So far, none of these studies have offered reliable caries pre dictor tests. However, it has been reported that among the variety of screening tests, the DM F index has the best potential for predicting caries risk in children [Honkala et al, 1984;Bader et al, 1986].…”