Petrenko A. Teeth hard tissues structures under normal conditions as well as at decay and non-decay damage some forms.

The investigation object: teeth structure under normal and pathological conditions. The investigation goal: to establish human teeth solid tissues structural organization principle in norm and to discover its reorganization principle at enamel physiological wearing as well as transformation specificity at cariotic damage and non-cariotic injury some forms. Methods of research - morphological: receiving the human being permanent teeth polished grinds enveloped in epoxide resin, teeth solid tissues etching in chelate-forming agent EDTA; dentin carbonic samples formation; light and transmissive electronic microscopy methods. Theoretical and practical value of the obtained results: besides usefulness of the investigative results applying, original microphotos and electronogram in educational process at human anatomy, histology, cytology and embryology, pathological anatomy chairs as well as at dental profile chairs, they can become stimule for more fundamental investigations carrying out in this area. Scientific novelty of the obtained results: : new data giving a possibility to understand deeper and more in details complicated problematic of main dental diseases including in part contact caries as well as fluorosis and teeth wedged defect are represented. Data about dentin alteration ultrastructural specificity at these diseases in comparison to its intact state and its changing character at enamel physiological wearing have been given first. The degree of implementation: the investigation main results are introduced in scientific work and education process at medical universities chairs.