Evaluation of corrosion products in dentin after removal of old amalgams with and without roughing

Abstract

Background & Objectives: To evaluate of corrosion products in dentin after removal of old Amalgams with and without roughness Materials and Method: Twenty Class II cavities were prepared on extracted premolars then Randomly were divided into four groups according to how they were restored. Group 1 : Light-cured packable composite to establish a microleakage baseline; Group 2: A high copper Amalgam; then stored in 37 ° C normal saline for 6 months to create amalgam corrosion products. Group 3: Identical to Group 2, but later the amalgam was replaced with composite leaving the cavity walls intact. Group 4: Identical to Group 3 except the cavity walls were extended 0.5 mm after amalgam removal prior to insertion of the composite. There are 5 specimens in each four groups for EDX analysis.Evaluation of EDX analysis was descriptive. Results : Corrosion products were detected in Groups 1,2,3 but were not detected in Group 4 . Conclusions : After amalgam removal, roughing dentinal walls could remove the corrosion products penetrating it. Keywords : Corrosion, High copper Amalgam, Dentin, surface roughing