СHANGE OF THE MICROSTRUCTURE OF ENAMEL AND DENTIN UNDER THE INFLUENCE OF THE ROTARY TOOL IN THE TREATMENT OF CARIES (IN VITRO STUDY)

At the present stage of development of the basic tool for cutting of necrotic tissues and forming, a cavity in the treatment of dental caries remains a rotary tool. Since the main dental restoration technique is adhesive technology, the quality of the enamel and dentin adhesive surfaces plays a decisive role in the future as a treatment. In vitro, using scanning electron microscopy was studied impact complex of hard teeth tissues preparation components (type cutting tool drive, feed rate, etc.) on the microstructure of adhesive enamel and dentin surfaces. Modeled and rendered the most frequently committed errors by doctors at preparing dental hard tissues. Diamond tool in combination with the turbine drive has the most adverse effect on the microstructure of dentin. Inadequate selection of tungsten carbide tools leads to significant destruction of enamel prisms, which in turn is responsible for violations of the adhesion of filling materials and recurrent caries. Just complete an adequate combination of the above components of hard teeth tissues preparation provides the necessary condition of the adhesive surfaces and high-grade quality of the composite adhesion.