Open AccessComparative analysis of the strength of restoration polymers of light polymerization for dental restoration using the acoustic emission method: part one
Author(s) -
V.S. Kukhta,
AUTHOR_ID,
V. Makeev,
О.S. Kyrmanov,
V.R. Skalsky,
О. М. Станкевич,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
sučasna stomatologìâ/sovremennaâ stomatologiâ
Language(s) - English
Resource type - Journals
eISSN - 1992-576X
pISSN - 2786-7641
DOI - 10.33295/1992-576x-2021-3-26
Subject(s) - acoustic emission , composite material , brittleness , materials science , fracture (geology) , composite number , polymer , polymerization
Purpose. Comparative analysis of the strength of hybrid restoration composites of light polymerization during their local loading using the phenomenon of acoustic emission. The following restoration composites were studied: Latelux, Tetric N-Ceram, Charisma Classic. Results. It was determined that the nature of the destruction of all composites is the same: elastic-plastic at the initial stage of the load with a transition to brittle as its further growth. Three types of composite failure are observed: correct, incorrect and mixed. The first predominated during fracture under the action of local loading of the Latelux composite, for Tetric N-Ceram and Charisma Classic materials a mixed type of fracture is characteristic. Conclusions. Analysis of the parameters of the AE signals showed that the signals had the highest amplitude and energy when the Tetric N-Ceram composite was destroyed, and the lowest – Latelux. All dental composites are dominated by high-energy ductile-brittle and brittle fracture, which indicates the spread of micro- and macrocracks of various sizes in materials. Key words: polymer composites, strength, acoustic emission method.