FEATURES OF THE CERVICAL AREA STRUCTURE OF PERMANENT TEETH OF DIFFERENT GROUPS

According to the findings of various authors, almost 100% world's population suffers from dental caries. Carious lesions cervical area teeth attract special attention since their localization does not provide for early detection pathological process, and features microbiocenosis oral cavity structural enamel-cementum-dentine junction are significant risk factors development progression The aim study is research different options structure groups find out frequency occurrence. Material methods. We determined ratio hard tissues – enamel, cementum dentin in 320 permanent maxilla mandible (10 each 11-18, 21-28, 31-38 41-48), which were removed due clinical indications vestibular, (palatal/lingual), medial distal contact surfaces. Results. Four tissue region tooth identified: lack between enamel presence zones open dentin; margin with cementum; overlapping enamel. Each specified occurs on oral, surfaces groups. Among all examined surfaces, 2% have a zone exposed area, 4% covered layer cementum, 47% variants Further characteristics will allow etiological offer new improved methods prevention, diagnosis treatment.