Comparative analysis of shear bond strength of lithium disilicate samples cemented using different resin cement systems: An in vitro study

Abstract

Aim: This study aims to evaluate and compare the shear bond strength (SBS) of three different resin cements - total etch and rinse, self-etch and self-adhesive resin cements, used to bond the lithium disilicate restorations to human dentin. Settings and Design: Comparative - Invitro study design. Materials and Methods: Forty-five lithium disilicate (IPS E.max) discs (4 mm in diameter and 3 mm thick) were fabricated and randomly divided into three groups ( n = 15). The occlusal surfaces of 45 extracted human maxillary premolars were ground flat. Fifteen specimens were luted, under a constant load, with each of the following resin cement: Variolink N (Group VN), Multilink N (Group MN), and Multilink Speed (Group MS). All cemented specimens were stored in distilled water for 1-week following which, they were tested under shear loading at a constant crosshead speed of 1 mm/min until fracture on a universal testing machine; the load at fracture was reported in megapascals (MPa) as the bond strength. Fractured specimens were also inspected by the scanning electron microscopy. Statistical analysis of the collected data was performed using one-way ANOVA test, post hoc Bonferroni test, and Chi-square test (α =0.05). Statistical Analysis Used: Oneway ANOVA test and post hoc Bonferroni test. Results: Mean SBS data of the groups in MPa were: Variolink N (Group VN): 14.19 ± 0.76; Multilink N (Group MN): 10.702 ± 0.75; and Multilink Speed (Group MS): 5.462 ± 0.66. Significant differences in SBS ( P < 0.001) of the three resin cement were found. Intergroup comparison revealed statistically significant differences in SBS between Groups VN and MN ( P < 0.001), Groups B and C ( P < 0.001), and Groups VN and MS ( P < 0.001). Chi-square test used to compare the distribution of mode of bond failure among the three groups delineated that the cohesive failure was significantly more among Group VN, whereas adhesive failure was significantly more among Group MN and MS. Conclusion: Total etch and rinse resin cement, i.e., Variolink N (Group VN) produced significantly higher bond strength of all-ceramics to dentin surfaces than did the self-etch and self-adhesive resin cements, i.e., Multilink N and Multilink Speed, respectively.

Resin cement selection for different types of fixed partial coverage restorations: A narrative systematic review

“…Adhesion with resin cement calls for surface preparation of restorative materials to provide stable and durable adhesive bonding (Stewart et al, 2002 ). Table 4 summarizes the available studies comparing the effect of different surface preparations on the bond strength of resin cements to different surfaces (Casucci et al, 2011 ; Chatterjee & Ghosh, 2022 ; D'Arcangelo et al, 2009 ; Duarte et al, 2008 ; Hitz et al, 2012 ; Murthy et al, 2014 ; Özdemir et al, 2019 ; Pisani‐Proenca et al, 2006 ; Raeisosadat et al, 2020 ; Shimada, 2002 ; Turp et al, 2016 ; Upadhyaya et al, 2019 ).…”

Evaluation of Biaxial Flexural Strength and Shear Bond Strength of a Novel Chair-Side Cad/Cam Pre-crystalized Zirconia Reinforced Lithium Silicate (In-Vitro Study)

“…Upon extraction, the teeth were subjected to a disinfection process using chloramines-B-hydrate. Subsequently, they were stored in distilled water at room temperature from the day of extraction until they were utilized in the experiments.. 13 The teeth were a xed into auto-polymerizing acrylic resin blocks (Acrostone ,WHW plastic, Packed by Anglo Egyptian Lab) that extended up to the cementoenamel junction (CEJ). The specimens, now securely mounted, were randomly allocated into two distinct groups for the experimental procedure.…”

Lithium Disilicate Ceramics in Prosthodontics: Unveiling Innovations, Current Trends, and Future Horizons

“…Opting for co-jet application or hydrofluoric acid etching is a favourable approach in the cementation of lithium disilicate restorations, enhancing the bond with resin cement [18]. Total etch resin cements prove to be dependable luting agents, ensuring a durable bond between lithium disilicate and the dental substrate [19].…”