The Effect of Trichloracetic Acid as a Hemostatic and Etching Agent on the Morphological Characteristics and Shear Bond Strength of Resin Composite to Enamel

Abstract

Clinical Relevance TCA gel etches enamel surfaces and produces surface morphological characteristics and bond strength similar to that produced by phosphoric acid. When TCA is used as a hemostatic agent on marginal gingiva, its inadvertent contact with enamel improves the immediate bond strength of resin composite to enamel. However, when using phosphoric acid and 50% TCA, an erosive enamel surface is produced.