Comparative evaluation of shear bond strength between fifth, sixth, seventh, and eighth generation bonding agents: An In Vitro study.

Abstract

To evaluate and compare the shear bond strength of composite resin to dentin using eighth generation dental adhesive (G-Premio Bond) with fifth, sixth, and seventh generation dentin adhesives. A total of 64 freshly extracted non-carious, intact human premolar teeth were selected. Class V cavity was prepared by using high speed hand piece. The prepared samples were randomly divided into four experimental groups (n = 16). Group I: Adper single Bond 2 [fifth generation] (ASB-5), Group 2: Clearfil SE [sixth generation] (CSE-6), Group 3: Single Bond Universal [seventh generation] (SBU-7), Group 4: G-Premio Bond [eighth generation] (GPB-8). Bonding agents were applied according to the manufacturer's instructions and light cured. Then, the Nano composite Filtek Z350 was placed in a two layer increment using Teflon Jig (2 × 2 × 2 mm) and was light-cured for 40 s. Shear bond strength was tested by a universal testing machine. This study was carried out by using Tukey HSD post-hoc test where P ≤ 0.05 was considered as a statistical significant. The highest value of shear bond strength was obtained from G-Premio Bond (eighth generation) showed statistically significant difference when compared to seventh generation bonding agent. However, there is no statistical significant difference between eighth and fifth, sixth generation. The study concluded the G-Premio Bond (eighth generation) showed effective shear bond strength than other bonding agents. This bonding agent is compatible with self-etch without use of primer which gives highly long lasting esthetic, wear resistant, and it is ideal for hypersensitive tooth.