Received 21/01/2024
DOI: 10.35556/idr-2024-2(107)60-63
Study of optical parameters of composites of different years of manufacture with temperature changes and recommended exposure time by an automated spectrophotometer
Shalamay L.I.1, Mendosa E.Yu.2, Maiorov E.E.3, Lampusova V.B.1, Oksas N.S.1, Kosov S.A.1
1Federal State Budgetary Educational Institution of Higher Education “Academician I.P. Pavlov First St.Petersburg State Medical University” of the Ministry of Health of the Russian Federation
197022, Russia, Saint Petersburg, L’va Tolstogo St., 6–8.
2Federal State Budgetary Educational Institution of Higher Education “Russian University of Medicine” of the Ministry of Health of the Russian Federation
127006, Russia, Moscow, Dolgorukovskaya St., 4
3Saint-Petersburg State University of Aerospce Instrumentation
190000, Russia, Saint-Petersburg, Bol. Morskaya St., 67 A

E-mail address: majorov_ee@mail.ru

Summary
This article is devoted to the study of the optical parameters of composites of different years of manufacture with changes in temperature and exposure time by an automated spectrophotometer. It is promising to use spectrophotometers to study the optical properties of composite materials, since these devices provide reliable, reliable and highly accurate information about the object under study. The paper defines the purpose of the research, sets the task and presents the objects and method of measurements. The optical scheme and technical parameters of the device are given. Spectral dependences of the absorption coefficient K(λ) of «Estelite Asteria» samples of hue in the second axis at different exposure times and different temperatures are obtained. It was found that the exposure time t = 10 s, and temperatures (T = 0 °C, T = 47 °C), as well as the year of manufacture of the material (2020, 2021 and 2023), do not affect the quality of the restorations. Study results can be used in therapeutic dentistry, dental logistics and optical instrumentation.

Keywords: exposure time, temperature, spectrophotometer, enamel, slit, diffraction grating.

For citation: Shalamay L.I., Mendosa E.Yu., Maiorov E.E., Lampusova V.B., Oksas N.S., Kosov S.A. Study of optical parameters of composites of different years of manufacture with temperature changes and recommended exposure time by an automated spectrophotometer. Stomatology for All / Int. Dental Review. 2024; no.2(107): 60-63 (in Russian). doi: 10.35556/idr-2024-2(107)60-63

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