Mechanical and chemical retention of laboratory cured composite to metal surfaces

Comparative study of chemical and mechanical retentive systems for bonding of indirect composite resin to commercially pure titanium

“…Studies evaluating metal-composite chemical bonding systems (4-META and Silicoater MD) have found higher bond strength for chemical systems, when compared to mechanical ones, minimizing the formation of cracks at the metal-composite interface (5,15,16). In the present study, the bond strengths of composite to cpTi treated chemically were similar to those recorded in the control group (sandblasting).…”

Effect of composition, viscosity and thickness of the opaquer on the adhesion of resin composite to titanium

“…The variations between the opaquers in terms of bond strength could be explained based on the variations in the degree of water uptake, namely due the hydrophilic character of the dimethacrylates. Detrimental effect of thermocyling on opaquers when compared to testing without aging has been previously reported [12][13][14][15][16][17][18]. As discussed above, the increased number of thermal cycling as well as long-term water storage which was not practiced in this study may influence the water saturation and thereby, decreased bond strength could be expected.…”

“…Most of the studies on metal-resin adhesion involved different thermocycling times but the common consensus was that the thermocycling decreased the bond strength as it weakens the interface [12][13][14][15][16][17]. A minimum of 5000 cycles are advised according to the ISO norm for metalresin adhesion tests [18].…”

“…Adhesion of resin composites to titanium has been previously investigated but some of these studies excluded the opaquer layer therefore their clinical implication fails [12,14]. Although there is an ISO norm, this was also not practiced in these studies.…”

Comparison of shearbond strength between metal and indirect resin according to the different conditionings

“…Also, its sub metal's melting point must be higher than the porcelain's burning temperature and it may cause excessive wear to the opposing dentition. 1,2 To overcome the drawbacks, indirect composite resins have been introduced since the 1980's. The first generation resin products were rarely applied to clinical practice due to low contents of inorganic filling materials which resulted in weak properties.…”