Development of Metal-resin Composite Restorative Material Part 5: Evaluation of the Bonding between Ag-Sn Particle and 4-META Coupling Agent of the Metal-resin Composite

Abstract

This study evaluated the oxide characteristics on a Ag-Sn particle surface modified by acid and heat in order to understand the bonding mechanism. Nine different Ag-Sn particles including standard Sn, SnO and SnO2 were evaluated by X-ray Photoelectron Spectroscopy (XPS). The particles were also used for preparing the composite to test the flexural properties following the ISO4049.A high correlation between flexural strength of the composites and Sn3d binding energy of their filler particles was found.Different oxide forms (SnO and SnO2) showed different adhesive abilities to bond with 4-META, regarding the difference in flexural strength of the composite.The highest flexural strength composite showed Sn3d binding energy of its filler at 486.4eV, which was the SnO binding area. This implies that SnO was responsible for a good bond between particle surface and 4-META coupling agent.

Development of metal-resin composite for dental magnet keepers, Part 2: Optimum 4-META content

“…In their initial attempts at developing metal-resin composites, Hirano et al 8) and Kakuta et al 13) reported that the highest flexural strengths were 55.9 MPa and 61.3 MPa, respectively. Subsequently, they reported much better values (71 MPa and 102.4 MPa, respectively) by modifying the filler surface treatment as shown in later papers 9,14) . Thus, remarkable improvement in mechanical properties can be expected by modifying the filler surface treatment in future studies.…”

Shear bond strength between autopolymerizing acrylic resin and Co-Cr alloy using different primers

“…The chromium content in the Co-Cr alloy produces an oxide layer at room temperature which can enhance chemical bonding with . According to Urapepon et al 22) , they reported that 4-META has an ability to bond metal oxide on Ag-Sn filler particle to polymeric matrix in a metal-resin composite. Moreover, this study also reported in depth that different oxide form (SnO and SnO 2) produced different adhesion ability of 4-META.…”

Development of Metal-resin Composite for Dental Magnet Keepers. Part 1: Effects of Filler and 4-META Contents on Setting and Flexural Properties

“…In their initial attempts at developing metal-resin composites, Hirano et al 8) and Kakuta et al 16) reported that the highest flexural strengths were 55.9 MPa and 61.3 MPa, respectively which were almost the same as that obtained in the present study. Subsequently, they reported much better values by modifying the methods in later papers 9,19) . As suggested in Fig.…”