Novel ceramic primer vs. conventional treatment methods: Effects on roughness and bond strength of all-ceramic restorations

摘要

Purpose: To compare the influence of various surface treatments on the shear bond strength and surface roughness of lithium disilicate glass-ceramics. Methods: 60 lithium disilicate ceramic samples were prepared according to the manufacturers' instructions and were divided into six groups according to the surface treatment: Control (C), 5% HF etching for 20 and 60 seconds (E20, E60), Monobond Etch & Prime etching (MEP), Nd:YAG (ND) and Er:YAG (ER) laser irradiation. All groups were treated with a universal primer except group MEP. A self-adhesive resin cement was bonded to all groups. The shear bond strengths of the specimens were measured using a universal testing machine while surface roughness was measured using a profilometer. Results: Kruskal-Wallis and Mann-Whitney U tests revealed significant differences (P0.05). The shear bond strength of group E60 was higher than the other groups while surface roughness of groups MEP and ER were highest.