Abstract
This study investigated the effect of CO2 laser irradiation on the inhibition of secondary caries on root surfaces adjacent to glass ionomer cement (GIC) or composite resin (CR) restorations. 40 dental blocks were divided into 4 groups: G1 (negative control) - cavity preparation + adhesive restoration with CR; G2 - (positive control) cavity preparation + GIC restoration; G3 - group 1 + CO…