The effect of erosion and abrasion on surface properties of composite resin

Abstract

View the article online for updates and enhancements. Related contentComputer Simulation of Stress-Strain State of Pipeline Section Affected by Abrasion Due to Mechanical Impurities P V Burkov, R G Afanas'ev and S P Burkova -Fatigue variation of surface properties of silumin subjected to electron-beam treatment S V Konovalov, K V Aksenova, V E Gromov et al. Abstract. The aim of the study was to evaluate the surface roughness of two commercial composite resins submitted to erosive attack, to abrasive wear and to association of erosive and abrasive challenge. Standardized samples of G-aenial anterior (GC Company) and Essentia (GC Company) composite resins were randomly split in 6 groups. In group 1 the samples were maintained in artificial saliva until the evaluation of surface roughness. In group 2 the samples were submitted only to erosive attack, in group 3 only to abrasive challenge and in groups 4 ,5, and 6 the erosive attack was followed by abrasive challenge immediately (group 4), 30 minutes after the erosive attack (group 5) and one hour after the erosive attack (group 6). The specimens were evaluated using surface roughness measuring tester SJ-210 (Mitutoyo Corporation, Japan) and the mean surface roughness values (Ra, µm) of each specimen were registered. A significantly increase of both composite resins surface roughness was recorded after erosive attack and abrasive challenge. Toothbrushing 60 minutes after acidic contact determined no significant differences in surface roughness of composite resins.

Different Methods of Scan Alignment in Erosive Tooth Wear Measurements: An In Vitro Study

“…The first stage in erosive degradation is water absorption, which can further infiltrate the resin matrix at the interface with fillers or other defects, compromising their reinforcing effects. Also, factors like the cross-linked nature of the resin matrix and the solvent sorption uptake directly affect composite resin degradation [50]. Previous studies showed that the increase in composite resin roughness in acidic solutions is probably due to their softening surface, which leads to the leaching of the resin components and the displacement of the filler particles [51].…”

The Effect of Heating on Surface Microhardness of Resin-based Materials for Direct Restoration

“…Composite resins have gain popularity during the time and now are the most used materials for direct restoration. Unfortunately, in oral environment, these materials are exposed to different chemical and physical aggressions [1,2] and are prone to degradation [3]. Dental practitioners have claimed some disadvantages of these materials like polymerization shrinkage, microleakage, postoperative sensitivity, poor marginal adaptation, sensitive technique for placement, difficult handling.…”