 Carious teeth will be cleaned with a pumice-water slurry and rubber cup to remove salivary pellicle and any bacterial plaque. As much as possible, local anesthesia will be. After caries removal high and low-speed handpieces under abundant water irrigation, patients will be allocated randomly in the four experimental groups cited above. Final contouring and polishing of the restorations will be performed at the same appointment, using a fine-grit diamond bur KG Sorensen, silicon carbide polisher Viking Kit, KG Sorensen, silicone rubber tips Viking Kit, KG Sorensen flexible discs Sof-Lex, 3M ESPE, and polishing pastes Diamond Excel, FGM. 