Evaluation of the microleakage of class V composite restoration after cavity treatment with Erbium, CO₂ lasers, Papain, and Bromelain enzymes

Abstract

ObjectvesDifferent surface preparation and treatment methods may have dissimilar effects on the microleakage of composite resin. This study was conducted to determine the deproteinizing effect of 10% bromelain enzyme, 10% papain enzyme, CO2, and erbium‐YAG laser in regard to decrease in the microleakage of composite restorations.Materials and MethodsThirty teeth were selected and 60 class V cavities were prepared on the lingual and buccal sides. They were divided into six groups (n = 10): Group 1, phosphoric acid gel; Group 2, bromelain enzyme 10%; Group 3, papain enzyme 10%; Group 4, mixed papain and bromelain enzymes 10%; Group 5, CO2 laser; and Group 6, erbium‐YAG laser. They were stored in basic fuchsine and dye penetration was evaluated. Kruskal–Wallis and Mann–Whitney tests were used for statistical analysis, p < 0.05ResultsIn both occlusal and gingival margins, comparison of microleakage between groups 1, 2, 3, 4, and 5 showed no significant differences (p = 1) and group 6 had a significant difference with other groups (p ˂ 0.001).ConclusionsMicroleakage of composite resin in the dentin surface was not affected significantly using either bromelain or papain 10% enzymes or erbium laser. However, CO2 laser had a negative effect on the enamel and dentin margins and increased the microleakage. Erbium laser showed a better effect than enzymes on microleakage.