Adhesive properties of new 3D-SR adhesive Tokuyama Bond Force II

Objectives: The purpose of this study was to compare and evaluate the bond strength of the one-step adhesives including newly developed Tokuyama Bond Force II (BF II, Tokuyama Dental), which was applied the new 3D-SR technology and showed higher thermal stability resulting a longer shelf life up to 25°C.

Methods: Material; BF II and Tokuyama Bond Force (BF, Tokuyama Dental),which contained 3D-SR technology, and experimental bonding agent (w/o SR, Tokuyama Dental) and G aenial bond (GB, GC), which did not contain 3D-SR technology, were used.

TBS; The surfaces of bovine enamel and dentine were ground (600-grit), applied adhesives according to manufacturer's instructions and filled with Estelite Sigma Quick (ESQ, Tokuyama Dental). The tensile bond strength was measured after immersion in water at 37°C for 24 hours and after thermal cycling (3,000 times, between 4°C and 60°C) (n=4 for each conditions). One-way ANOVA with Tukey's HSD was performed to examine an interaction between the type of adhesives on the bond strength for each condition.

Results: Means of tensile bond strength with BF II were summarized below (Table1).

                  Table1. Tensile bond strength

BF II and BF showed statistically higher bond strength in their after 24 hours and after thermal cycling. Besides, w/o SR and GB showed lower bonding strength.

Conclusions: Tokuyama Bond Force II showed statistically higher bond strength and higher thermal durability, showing the effectiveness of new 3D-SR technology.