Stomatologist № 2 (33) – 2019, pp. 68-73                                                                                                                   EXPERIENCE EXCHANGE

Transparency of composite materials in esthetic stomatology

N.V. Novak

MD, PhD, DMSci, Professor, Belarusian Medical Academy of Postgraduate Education, Minsk, Belarus

https://doi.org/10.32993/stomatologist.2019.2(33).1

ABSTRACT
Tooth tissues are capable of reflecting, transmitting, diffusing light, which gives it characteristic individual features. The formation of the optical properties of a tooth is significantly affected by the transparency of its hard tissues. Enamel and dentin are able to partially transmit light rays, while the light conductivity of enamel is higher than dentin.
The aim of the study. Studying of degree of transparency of the transparent composite materials used at production of esthetic restorations for imitation of transparency of a cutting edge of tooth.
Objects and methods. For studying of degree of transparency of transparent composite materials of different manufacturing firms disks 0.5 mm and 1.0 mm thick were made of these materials and the transparency is studied.
Results and discussion. Studying of degree of transparency of the transparent composite materials used for imitation of transparency of a cutting edge at production of esthetic restorations of teeth is presented. The coefficient of transparency of composites is investigated, the visual assessment of a transparency of sealing materials of different firms is carried out, and comparative visual assessment of a transparency of transparent samples of photopolymers of different thickness is executed.
Conclusions. It is shown that the layer of transparent material is thicker, the more its contribution to formation of shades of color, layers of different thickness can significantly transform optical properties, having an impact on color and transparency of the made esthetic design.

Keywords: transparency, sealing materials, esthetic stomatology

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Correspondence to:  Е-mail: zubnajafeja@yandex.by