employee
Nizhny Novgorod, Nizhny Novgorod, Russian Federation
employee
Nizhny Novgorod, Nizhny Novgorod, Russian Federation
Nizhny Novgorod, Nizhny Novgorod, Russian Federation
employee
Nizhny Novgorod, Nizhny Novgorod, Russian Federation
employee
Nizhny Novgorod, Nizhny Novgorod, Russian Federation
UDC 616.31
Introduction. The development of adhesive dentistry has significantly transformed clinical practice, enabling high levels of bond strength between restorative materials and dental tissues. Fourth-generation adhesive systems remain especially relevant, having established themselves as a reliable standard due to their high bond strength and minimal marginal microleakage. In the context of restricted imports, there is an increasing need for objective evaluation of domestic alternatives to foreign materials. The domestic adhesive system is positioned as a competitive alternative to foreign counterparts; however, comparative data on its chemical interaction with ceramic materials remain insufficient. Therefore, studies based on Electron Probe X-ray Microanalysis (EPMA) are particularly valuable for assessing the formation of interfacial bonds. Aim. A comparative study of the elemental composition in the adhesive interface zone between domestic and foreign adhesive systems with ceramic restorations using X-ray microprobe analysis (EPMA) to identify the specific features of chemical interactions at the material interface and to assess the effectiveness of adhesive bond formation. Materials and Methods. A comparative in vitro study was conducted to assess the adhesive interface of two-component fourth-generation adhesive systems produced by domestic and foreign manufacturers with lithium disilicate ceramics. The surfaces of the ceramic specimens were etched, followed by the application of an adhesive layer, polymerization, and subsequent incremental placement of a light-cured nanohybrid composite material. The microstructure of the adhesive interface zones was examined using a scanning electron microscope JSM-IT300LV (JEOL, Japan). The elemental composition and distribution of components within the adhesive interface were determined by Electron Probe X-ray Microanalysis (EPMA) using an X-MaxN 20 detector (Oxford Instruments). Results. The laboratory study demonstrated the high performance of the domestic adhesive system. The domestic system exhibited comparable characteristics to the foreign material, confirming reliable infiltration and adhesion to the ceramic surface. These findings indicate its potential as a competitive alternative to imported adhesive systems.
adhesive systems, adhesion, ceramic restorations, adhesive bond, energy-dispersive X-ray microanalysis, elemental composition, scanning electron microscopy, dental materials, import substitution in dentistry
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