Twenty extracted human maxillary third molars were reduced to expose flat surface of dentin and divided into two equal groups, which were bonded using following bonding agents: Group 1: Peak universal bond (self-etch with 0.2% chlorhexidine incorporated in it) & Group 2: Seventh generation bonding agent (self-etch without chlorhexidine). Composite cylinders were built using a plastic mould on these prepared dentinal surfaces. Samples were stored in distilled water for 24 hours and tested for shear bond strength with universal testing machine. Shear force was applied perpendicular to the long axis of composite cylinder at adhesive-tooth interface until debonding occurred. The data so obtained were tabulated and analyzed statistically using independent-samples t test.
There is no statistically significant difference between seventh generation bonding agent and Peak universal bond.
Use of Peak universal bond (self-etch adhesive with 0.2% CHX incorporated in it) has no adverse effect on immediate resin dentin bond strength and it is comparable with that of seventh generation bonding agent (self-etch adhesive without chlorhexidine), suggesting that antimicrobial may be safely incorporated into the resin monomers contained in the adhesive.

Reference: Rao SA, Roopa D (2015) Comparative Evaluation of yhe Bonding Efficacy of Seventh Generation Bonding Agent and Peak Universal Bond: An In-Vitro Study. J Interdiscipl Med Dent Sci 3:167. doi: 10.4172/2376-032X.1000167

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