N-Etch is an etching gel containing 37% phosphoric acid. N-Etch is used for enamel etching and dentin conditioning in conjunction with composite restorations, sealants and the adhesive luting of indirect all-ceramic or composite restorations. N-Etch is the best partner for Tetric N-Bond Universal for enamel etching and dentin conditioning.
[1] Peschke A, Clinical Evaluation of Total Etch2, Test Report, Ivoclar Vivadent, 2003