Restarch warm-characteristics of deformation hard tissue of teeth and restorations photocomposite

Author(s):  A.V. Avsiankin, Donetsk National Medical University of M. Gorky, Donetsk, Украина, aav.dn@yandex.ru

Issue:  Volume 41, №2

Rubric:  Clinical Medicine

Annotation:  Restoring contact surfaces of posterior teeth by direct or indirect method with high efficiency is one of the unsolved problems of modern dentistry. In this regard, it is interesting to study thermal deformation char-acteristics of hard tissue of teeth and restorative materials that perform direct restorations and tabs. Pur-pose – a comparative laboratory study teplodeformatsionnyh hard tissue characteristics fotokompozitsionnyh teeth and restorations performed by various methods. Standard Class II cavities formed by Black in extracted teeth was carried out direct and indirect restoration of universal micro-hybrid with photocomposite prepolymerized filler and universal nanophotocomposite. From hard dental tissues (enamel and dentin), the direct and indirect restorations prepared samples were placed in their en-vironment with a temperature increase from 20 °C to 60 °C to 10 °C intervals. At each stage of the linear dimensions of samples was measured and calculated volume. Under the influence of increasing from 20 °C to 60 °C ambient temperature patterns change their linear and volumetric parameters and anisotro-py due photocomposite characteristics at different temperature ranges changed unevenly in different di-rections. The closest to the hard tissues of the teeth on warm-deformation performance with increasing temperature from 20 °C to 50 °C and 20 °C to 60 °C were samples of indirect restorations of universal microhybrid fotokompozitsionnogo material prepolymerized filler, the increase in which was, respective-ly, 94.96% and 94.52% increase from the same hard tooth tissue samples

Keywords:  teeth, hard tissue, photocomposite materials, direct and indirect restoration warm-characteristics of deformation

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