 Methods: Eighty patients with carious lesions will be receive restorations in premolars and molars, which will be randomly allocated in four experimental groups: G1 Biosilicate, AdperSingle Bond 2 and IPS Empress Direct composite, G2 Adper Single Bond 2 and IPS Empress Direct composite, G3 Biosilicate, AdheSe and IPS Empress Direct composite e G4 AdheSE and IPS Empress Direct composite To participate in the clinical trial, qualified subjects must meet for inclusion and exclusion criteria. Sixty-four 64 selected volunteers will be fully informed on the nature of the study and after had signed a Term of Acceptance defined by the Ethics Committee FORP - USP, they will be invited to participate. 