Number of evaluated restorations for each experimental group (*) classified according to the World Dental Federation (FDI) criteria. 
(*) SEEBSy, self-etch with selective enamel etching and bulk in syringe; SETBSy, self-etch and bulk in syringe; SEEBCa, self-etch with selective enamel etching and bulk in capsule; SETBCa, self-etch and bulk in capsule; SEEIn, self-etch with selective enamel etching and incremental composite; SETIn, self-etch and incremental composite.(**) A = Clinically very good; B = Clinically good; C = Clinically sufficient/satisfactory; D = Clinically unsatisfactory; E = Clinically poor.(***) Only for class II restorations.
