The high risk strategy, which aims at targeting the program at those individuals with the highest risk.Secondly, accurate, acceptable and feasible measures for identifying the subjects with the highest risk of developing new caries lesions must be available.As caries progression or reversal is determined by the balance between protective and pathological factors, caries prevention should be given high priority not only by physicians (general, pediatric, pediatric dentist) but also by schools and even the governmental authorities.