Study of the acidity of dental self-etching self-adhesive dual-cure composite cements for fixation and core restorations
DOI:
https://doi.org/10.32782/2786-7684/2024-2-5Keywords:
dentistry, composite materials, fixation, adhesion, acidityAbstract
Introduction. Modern composite resin cements for luting of dentures, which have self-adhesive properties, are gaining more and more popularity. The study of acidity indicators (as an indirect sign of the aggressiveness of cement) and the neutralization of acidic components during polymerization is an urgent issue in the development and improvement of dental composite cements of the dual-cure polymerization mechanism. Research methodology and methods. The purpose of the work is to investigate the relative level of acidity of the components in a series of self-etching self-adhesive dual-cure composite cements for luting of orthopedic structures and core teeth restorations. The acidity level of the materials «Breeze», «Relyx U200», «Maxcem Elite», «Totalcem», «GC-Cem-ONE», «Nova Resin Cement» and «Prolink Cem Plus» was investigated. The universal indicator paper was used. The results of the color reaction were scanned; the analysis of the acidity level was compared in the GIMP 4.0 photo editor. The results were evaluated using comparative statistics tests. Presentation of the main research material. The results of the study showed that the lowest pH values (and, accordingly, the highest acidity) were found in the materials «Breeze» (pH=2.20±0.92; M=2.50), «Maxcem Elite» (pH=2.30±0.82; M=2.50) and «RelyX U200» (pH=2.50±0.53). The average level of acidity was in the materials «G-Cem-One» and «Nova Resin Cement», the pH values of which were the same – 3.20±0.42 (М=3.00). A low level of acidity was found in the materials «Prolink Cem Plus» (pH=3.80±0.79; M=4.00) and «Totalсem» (pH=5.2±0.79; M=5.00). The obtained results allow us to come to a conclusion about potentially more effective etching of hard tooth tissues when using the materials «Breeze», «Maxcem Elite» and «RelyX U200». Accordingly, in such cases, one can expect a relatively higher strength of adhesion to tooth tissues during the final polymerization of the material. Conclusions. Self-etching self-adhesive dual-cure dental composite cements for luting are medical products that require further improvement and refinement to improve their adhesive properties, physical and mechanical characteristics, and increase the duration of survive.
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