A Surface Topographical Analysis of Lithium Disilicate Ceramics Pretreated With Rose Bengal, Er:YAG Laser, and Ceramic Primer on Bond Integrity, Surface Roughness, and Bond Failure to Composite Resin

Abstract

To evaluate adhesive bond integrity and surface roughness (Ra) of LDS ceramics following various surface modification treatments. Forty LDS ceramic disks were manufactured and allocated into distinct groups according to the pretreatment procedure. Group 1 samples were treated with HF (hydrofluoric acid) and S (silane). Group 2 uses RBe (Rose Bengal photosensitizer) S. Group 3 utilizes SECP (self-etch ceramic primer), while Group 4 employs Er:YAG laser. The Ra, shear bond strength (SBS), and surface topography of the conditioned LDS ceramic were evaluated. The bonding of all LDS ceramics was assessed with a universal testing machine. Debonded samples were analyzed using a stereomicroscope. The Ra and bond integrity values were assessed through the utilization of a two-way ANOVA, followed by Tukey post hoc testing. The samples prepared with HF+S displayed the highest Ra and bond values. However, group 2 (RBe+S) exhibited the least bond strength. There were no notable disparities in the results regarding the strength of the bonds among group 1, group 3 (SECP), and group 4 (Er:YAG laser+S). Er:YAG and SECP show promise as potential substitutes for hydrofluoric acid (HFA) in conditioning LDS ceramics, yielding satisfactory bond scores by positively altering the surface morphology.