ArticleBMC oral health2025
Effect of four chemical reagents on the shear bond strength of four different metal alloys bonded with self-adhesive resin cement.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundTo evaluate the effectiveness of four chemical reagents in modifying the surfaces of four different metal alloys, specifically focusing on determining their shear bond strength (SBS) when bonded to self-adhesive resin cement.
methodsTwo hundred and eight metal alloy specimens (base metal alloys, noble metal alloys, high-noble metal alloys and titanium alloys) were divided into twenty groups based on the primers applied (Alloy primer, V-primer, Superbond C&B monomer and Monobond etch & prime). The modified surfaces were bonded to composite rods with RelyX U200. They were immersed in distilled water and subjected to 5000-cycle thermocycling. Subsequently, SBS was evaluated using a universal testing machine. Failure modes were examined with stereomicroscopy. Data were collected and statistically analyzed using Two-way ANOVA followed by Tukey's post-hoc tests at 0.05 level of significance.
resultsUsing an Alloy primer for high-noble metal and titanium alloys led to higher SBS than with base metal alloys and noble metal alloys (p < 0.05). Conversely, the groups that utilized V-primer or Superbond C&B monomer demonstrated the highest SBS when applied to high-noble metal alloys or base metal alloys, respectively. Additionally, in the group that used Monobond etch & prime followed by rinsing with water, titanium alloys displayed a notably higher SBS than the other metal alloy groups (p < 0.05).
conclusionsThe surface modification of four different metal alloys with various chemical reagents affects the SBS between the surfaces of these alloys and self-adhesive resin cement.
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