Bonding Performance of Universal Adhesive in Different Etching Modes: A Review

The field of dentin bonding agents has evolved significantly over the past four decades as a result of the challenging pledge to use resin monomers to achieve better adhesion to dentin. A new class of adhesives known as Universal Adhesives (UAs) has been developed in response to the growing demand for user-friendly and simplified adhesive solutions. The word "universal" refers to the adhesives' ability to be used with a wide range of direct and indirect restorative materials, according to the producers, and can be applied with any adhesion approach that is with both the etch-and-rinse and the self-etch techniques. This review article highlights the chemical composition, function and mechanism of universal adhesion. It also reviews the potential of adhesion in both etch and rinse and self-etch mode for both enamel and dentin substrate and their clinical significance. Key words: Universal bonding, Etching mode, Self-adhesive, Etch-and-rinse, Self-etch