Moscow, Moscow, Russian Federation
graduate student
Moscow, Moscow, Russian Federation
UDC 616.31
The aim of this study was to conduct an extensive comparative laboratory investigation of the water absorption and solubility properties of the domestic CAD/CAM composite Nolatek, compared to widely used foreign materials such as Tetric CAD and a composite Paradigm MZ100 from 3M ESPE, which are traditionally considered benchmarks in the clinical practice of orthopedic dentistry. The hydrophilic properties of dental composites are key parameters determining their physicochemical stability, biocompatibility, resistance to degradation, and durability during long-term use in the aggressive oral environment, characterized by fluctuations in temperature, humidity, and pH. Experimental determination of water absorption (W) and solubility (W) was carried out in strict accordance with GOST standards, ensuring the reproducibility and comparability of the results. Standard samples of each material were prepared for the study and subjected to controlled exposure to an aqueous medium for a specified time interval, followed by highly accurate mass measurement before and after exposure. The obtained data were processed using descriptive statistics, including the calculation of mean values and standard deviations. The study results showed that all CAD/CAM composites studied fully complied with the standard's regulatory values. The water absorption and solubility parameters of the domestic Nolatek composite were comparable to those of Tetric CAD and Paradigm MZ100 materials and showed no statistically significant differences. Thus, the obtained data indicate that the Nolatek CAD/CAM composite possesses satisfactory physicochemical and performance properties comparable to imported counterparts, confirming its potential for use in the fabrication of dental orthopedic restorations and expanding the potential for the use of domestic materials in clinical practice.
CAD/CAM composites, Nolatek, Tetric CAD, Paradigm MZ100, water sorption, water solubility, laboratory study, physicochemical properties, orthopedic restorations
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