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Novel ceramic primer vs. conventional treatment methods: Effects on roughness and bond strength of all-ceramic restorations.
American Journal of Dentistry 2018 October
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 (P< 0.05). The shear bond strength of group E60 was higher than the other groups while surface roughness of groups MEP and ER were highest.
CLINICAL SIGNIFICANCE: Monobond Etch & Prime might be a useful method in order to obtain adequate bond strength values.
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 (P< 0.05). The shear bond strength of group E60 was higher than the other groups while surface roughness of groups MEP and ER were highest.
CLINICAL SIGNIFICANCE: Monobond Etch & Prime might be a useful method in order to obtain adequate bond strength values.
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