ArticleScientific reports2026
Surface pretreatments and erosive aging effects on the bond strength of CAD/CAM resin-based materials with a self-adhesive resin cement.
Article in Scientific reports, 2026. 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
This laboratory study evaluated the effect of surface pretreatments and erosion on the shear bond strength (SBS) of additive (3D-printed; Crowntec™) and subtractive (milled; Cerasmart™ 270) CAD/CAM resin-based materials bonded with a self-adhesive resin cement. Seventy-two specimens of each material were assigned to three surface pretreatment groups: control, grit-blasting, and grit-blasting + universal adhesive (UA). After treatment, self-adhesive resin cement (Panavia™ SA Cement Plus) was applied using a mold (2.38 mm diameter, 3 mm height). Specimens were then divided into control, gastric acid, and citric acid groups and subjected to 96 h erosive aging (n = 8). SBS was tested with a universal testing machine, failure modes were examined under a stereomicroscope, and data analyzed using SPSS 21.0 (α = 0.05). Material type and erosion significantly affected SBS (p < 0.001), whereas surface pretreatments did not (p = 0.698). Crowntec showed decreased SBS in the grit-blasting + UA group after gastric acid (p = 0.02), while Cerasmart had reduced SBS in all pretreated groups after both acids (p < 0.05). Overall, Crowntec exhibited higher SBS with predominant cohesive failures, while Cerasmart showed mainly adhesive failures, except in the grit-blasting + UA group. The findings indicate that SBS of self-adhesive resin cement to resin-based CAD/CAM materials depends on material type and erosive aging, while surface pretreatments mainly affect failure mode.
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