Inclusion Criteria:  children of both genders aged 3 to 14, with:  full healthy dentition bilateral dental caries stage 4,5 or 6 by ICDAS criteria reduced number of occlusal contacts dentures signed informed consent by participant's parents verbal consent of the children  Exclusion Criteria:  uncooperative behavior symptoms of temporomandibular joint dysfunction parafunctional habits systemic disturbances that can impact mastication ingestion of medicines that could interfere directly or indirectly with muscular activity tooth anomalies of structure, number or form periodontal disease tooth mobility