Comparative analysis of domestic and foreign composite materials of light curing by experimental colorimetric installation

The paper considers the issues of research of domestic and foreign composite materials of light curing by an experimental colorimetric installation. Obtaining information, reliable and high-precision data on the chromaticity parameters of composite materials has always been a significant task for the aesthetics of restorations on hard tooth tissues, therefore, the work is promising and relevant. The paper defines the purpose of the research, sets the task and presents the objects and method of measurements. The technical characteristics of the digital colorimetric installation are given. The color parameters of the studied composite materials were obtained in the color coordinate systems: XYZ, CIELab, HSL. It is revealed that domestic composite materials are not inferior to foreign analogues in terms of color parameters. Material and methods. The objects of the study were domestic composite materials Dentlight shade EA2 (VladMiVa SEZ, Russia), Estelux NK shade EA2 (Stomadent LLC, Russia) and foreign composite materials Harmonize Univversal shade A2E (Kerr, USA), Palfique estelite paste shade A2 (Tokuyama Dental Corporation, Japan). A developed digital colorimetric device was used to conduct experimental studies. Results. The color parameters of the studied samples from different manufacturers were obtained. A comparative analysis of domestic and foreign composite materials of light curing in different color coordinate systems with a digital colorimetric installation is carried out. The control of materials at the level of visually distinguishable shades of color is ensured.