Novamin on Streptococcus Mutans Count in Dental Plaque of High Caries Risk Children

Inclusion Criteria: * Medically healthy children. * No erupting first permanent molars. * High caries risk children; Have visible cavities or have a visible plaque on their teeth. * Cooperative (Positive or definitely positive), according to Frankl's Behavior Rating Scale Exclusion Criteria: * History of intake of antibiotics for the past 3-4 weeks. * History of professional fluoride treatment over 2 weeks before the study. * Children with tooth structure defects. * Children unable to return for recall visits