Objective: To evaluate the bonding strength between titanium produced by different techniques and resin cement. In addition, the study examines the effects of alumina blasting and anodisation voltage levels on the titanium-resin cement bond. Materials and Methods: The control group comprised titanium samples produced by milling, while the experimental group comprised titanium samples produced by selective laser melting. The experimental group was subdivided into subgroups: sandblasting only with alumina; anodization at 36 V after alumina sandblasting; and anodization at 50 V after alumina sandblasting. The alumina blasting process was conducted at 1.5 atm for 10 seconds. Subsequently, anodisation was performed in 1 M Phosphoric Acid. Subsequent to thermal cycling, the bond strength was analysed using t-tests and Kruskal-Wallis tests at a significance level of p<0.05. Results: The bond strength of the titanium group subjected to selective laser melting and only to alumina sandblasting was statistically significantly higher than that of the control group (p=0.040). A statistically significant discrepancy was identified among the experimental group subgroups (p=0.039). The bonding strength of the group subjected to sandblasting alone was significantly higher than that of the group anodised at 36V after sandblasting (p = 0.033). Conclusion: Titanium produced by the selective laser melting method demonstrated higher bond strength with resin cement compared to the milling method. Among the surface treatments evaluated, alumina blasting alone provided the highest bond strength, whereas anodisation performed after sandblasting reduced bond strength. Anodisation applications at different voltages yielded similar results, both exhibiting clinically acceptable bond strengths.
UZ et al. (2026) studied this question.