ADDITIONAL CHARACTERISTICS OF HYBRID COMPOSITES FOR FILLING TEETH UNDER LOCAL MOUNTING CLOCKS

  • V.F. Makeev Lviv National Medical University named after Danylo Halytsky, Lviv, Ukraine
  • V.S. Kukhta Lviv National Medical University named after Danylo Halytsky, Lviv, Ukraine
  • O.S. Kyrmanov Lviv National Medical University named after Danylo Halytsky, Lviv, Ukraine
  • V.R. Skalsky Physics and Mechanics Institute named after G.V. Karpenka National Academy of Sciences of Ukraine, Lviv, Ukraine
Keywords: hybrid composites for filling, strength.

Abstract

For the rational use of materials, it is necessary to have data on their ability to resist deformation and destruction. In particular, in each case it is necessary to have information on the stiffness, strength and resistance to destruction of materials in the specified operating conditions of the elements. To determine such strength characteristics of the material, certain studies are carried out.

According to the analysis of literature sources in the study of dental composites mainly determine the tensile strength (bending) and compression [2-10], because it is subjected to restore materials during their operation in the oral cavity.

The purpose of the study is to conduct a comparative analysis of the strength of hybrid composites of domestic and imported production during their local loading: Latelux (Latus, Ukraine), TETRIC N-CERAM (Ivoclar Vivadent, Liechtenstein), CHARISMA CLASSIC (Kulzer, Germany).

To conduct research, 10 samples of each dental polymer composite were made. Packaging and molding of the material into a specially designed form was performed in laboratory conditions at an air temperature of 18 210 C with their subsequent polymerization with a LED photopolymer lamp Bluephase 20i (G2) (Ivoclar Vivadent). Before the test, the samples were kept for 24 hours at a temperature of 370 C in saline.

The samples were loaded on the SVR-5 installation using a ball indenter (ball diameter mm steel SHX15, modulus of elasticity GPa, Poisson's ratio) with a speed of 0.002 mm/s.

The purpose of the study is to conduct a comparative analysis of the strength of hybrid composites of domestic and imported production during their local loading.

According to the results of experimental studies on the load of PB fracture, the Charisma Classic composite (5.72 ± 0.16 kN) has the highest strength, Latelux (4.23 ± 0.53 kN) the lowest, and Tetric N-Ceram (5, 03 ± 0.71 kN) occupies an intermediate position. To move the indenter, we obtained the following order of materials (in ascending order): Latelux (0.94 ± 0.11 mm); Charisma Classic (1.02 ± 0.04 mm); Tetric N-Ceram (1.03 ± 0.17 mm).

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Published
2021-09-22
How to Cite
Makeev, V., Kukhta, V., Kyrmanov, O., & Skalsky, V. (2021). ADDITIONAL CHARACTERISTICS OF HYBRID COMPOSITES FOR FILLING TEETH UNDER LOCAL MOUNTING CLOCKS. Ukrainian Dental Almanac, (3), 29-36. https://doi.org/10.31718/2409-0255.3.2021.04
Section
THERAPEUTIC DENTISTRY