Adhesive bonding of resin composite to various titanium surfaces using different metal conditioners and a surface modification system

Abstract

ObjectiveThis study evaluated the effect of three metal conditioners on the shear bond strength (SBS) of a prosthetic composite material to cpTi grade I having three surface treatments. Material and MethodsOne hundred sixty eight rivet-shaped specimens (8.0x2.0 mm) were cast and subjected to polishing (P) or sandblasting with either 50 mm (50SB) or 250 mm (250SB) Al2O3. The metal conditioners Metal Photo Primer (MPP), Cesead II Opaque Primer (OP), Targis Link (TL), and one surface modification system Siloc (S), were applied to the specimen surfaces, which were covered with four 1-mm thick layers of resin composite. The resin layers were exposed to curing light for 90 s separately. Seven specimens from each experimental group were stored in water at 37ºC for 24 h while the other 7 specimens were subjected to 5,000 thermal cycles consisting of water baths at 4ºC and 60ºC (n=7). All specimens were subjected to SBS test (0.5 mm/min) until failure occurred, and further 28 specimens were analyzed using scanning electron microscope (SEM) and X-ray energy-dispersive spectroscopy (EDS). Data were analyzed by 3-way ANOVA followed by post-hoc Tukey's test (α=0.05). ResultsOn 50SB surfaces, OP groups showed higher SBS means than MPP (P<0.05), while no significant difference was found among OP, S, and TL groups. On 250SB surfaces, OP and TL groups exhibited higher SBS than MPP and S (P<0.05). No significant difference in SBS was found between OP and TL groups nor between MPP and S groups. The use of conditioners on 250SB surfaces resulted in higher SBS means than the use of the same products on 50SB surfaces (P<0.05). ConclusionSandblasting associated with the use of metal conditioners improves SBS of resin composites to cpTi.

Evaluation and comparison of the effect of different surface treatment modifications on the shear bond strength of a resin cement to titanium: An in vitro study

“…The results observed in this group are in agreement with similar studies, which concluded that sandblasting and primer application significantly improved the SBS of the resin cement to titanium. [ 17 18 19 20 21 ]…”

Shear bond strength of luting cements to fixed superstructure metal surfaces under various seating forces

“…The increase in seating force might also lead to a possible reduction in cement film thickness depending on the composition and alter the cohesive strength of the self-adhesive resin cement because it is reported that self-adhesive resin cements exhibit lower mechanical properties than conventional resin cements. 37 Although resin cements containing phosphoric groups are able to produce strong chemical bonds with the superficial oxide layer of titanium, 38 the decrease in SBS value of RXU/CP Ti factor level combination under 50 N seating force might be due to this decrease in the cohesive strength and surface wettability of the RXU. 32 33 34 35 36 37 38 39 Also, the glass-ionomer cement establishes no chemical bond with noble metal alloys.…”

Enhanced resin titanium adhesion with silane primers using tribochemical silica-coating

“…Adhesive, mixed or cohesive failure modes were assigned, according to proportion of resin composite cement (or resin) remained on the Ti surface. When ≤33% resin cement remained on Ti substrate, it was considered adhesive failure; when ≥34% but ≤66%, mixed failure mode, whereas ≥67% and ≤100% was considered cohesive failure 16) .…”