Abstract
The intensity of tooth decay depended on the nature and type of deformation of the dental system and a disorder of chewing food. Objective: determine the intensity and prevalence of permanent dental caries in children with tooth deformities in different age periods. 146 children aged 6-9 years in schools in the Bukhara region were surveyed. Revealed that the prevalence of tooth decay in children at this age is an average of 53.8%; the most significant increase in caries prevalence falls at the age of 6 to 7 years which characterized localization on molars due to specific pathogenetic mechanisms. Children aged 6-9 years had a low level of resistance to molar enamel, and therefore, caries is very common in this group of teeth; no significant differences in the prevalence of permanent tooth decay in children with distal occlusion and children without operational problems in the maxillofacial area; children with distal occlusion were significantly less resistant to permanent tooth enamel than children in the control group. The presented research results can serve as a differential diagnosis for forming health groups in dispensary care of children [1.3.5.7.9.11.13].