Influence of photobio-modulation with an Er,Cr: YSGG laser on dentin adhesion bonded with bioactive and resin-modified glass ionomer cement

• Published in: Journal of applied biomaterials & functional materials Vol. 17; no. 4; p. 2280800019880691
• Main Authors: Alkhudhairy, Fahad, Naseem, Mustafa, Ahmad, Zeeshan H, Alnooh, Abrar N, Vohra, Fahim
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.10.2019; Sage Publications Ltd; SAGE Publishing
• Subjects: Acetic acid; Adhesive bonding; Biocompatibility; Biological activity; Biomedical materials; Bond strength; Bonding agents; Bonding strength; Cement; Conditioning; Dentin; Dentin - chemistry; Edetic acid; Ethylenediamine; Ethylenediaminetetraacetic acids; Evaluation; Failure analysis; Glass; Glass ionomer cements; Glass Ionomer Cements - chemistry; Humans; Lasers, Solid-State; Materials Testing; Molar; Molars; Resins; Shear Strength; Statistical analysis; Stress, Mechanical; Surface treatment; Teeth; Variance analysis; surface conditioning; Bioactive cement; Er,Cr:YSGG; resin-modified glass ionomer cement
• ISSN: 2280-8000; 2280-8000
• DOI: 10.1177/2280800019880691

The aim of the present study was to evaluate the shear bond strength (SBS) of bioactive cement (BAC) in comparison to conventional dual cure resin-modified glass ionomer cement (RMGIC) with Er,Cr:YSGG laser (ECL) dentin photo biomodulation. Methods: One hundred and twenty extracted human molars were allocated in eight groups (n = 15) based on surface conditioning and cement type. Specimens of groups 2 and 6 were conditioned with ECL whereas, groups 3 and 7 were treated with ECL + ethylenediamine tetra acetic acid (EDTA). Specimens in groups 4 and 8 were surface conditioned by ECL + EDTA + Tetric-N-Bond, and groups 1 and 5 were considered as control (non-surface treated). Cement build-ups were performed on the surface-treated dentin with BAC (groups 1–4) and RMGIC (groups 5–8). A universal testing machine was used to measure the SBS and the mode of failure was evaluated using a stereomicroscope. Statistical analysis was performed using an analysis of variance and Tukey’s post hoc test, at a significance level of p < 0.001. Results: The highest SBS values were observed in group 8, ECL + EDTA + Tetric-N-Bond + RMGIC (21.54 ± 3.524 MPa) and the lowest SBS values were displayed by group 1, with no surface treatment and BAC application (11.99 ± 0.821 MPa). The majority of failures were found to be mixed in lased dentin-treated dentin surfaces. BAC when bonded to dentin surfaces conditioned with ECL showed lower SBS in comparison to RMGIC. Conclusion: Conditioning of dentin with ECL and a bonding agent (Tetric-N-bond) improved bond strength scores for BAC and RMGIC. Use of EDTA improved bond strength values when bonded to BAC and RMGIC; however, this improvement was not statistically significant.