ĐÁNH GIÁ VI KẼ CỦA CLEARFIL AP-X COMPOSITE KHI SỬ DỤNG HAI KỸ THUẬT ĐẶT CHẤT DÁN KHÁC NHAU

Abstract

Objectives: To evaluate the ability of the Single Bond Universal Adhesive system to reduce microleakage when applying 2 coats – one cure and 2 coats – two separate cures teachnique. Methods: Experimental study in the lab (in vitro) on 30 permanent lower premolars, randomly divided into 2 groups with the technique using the Single Bond Universal Adhesive system with 2 coats – one cure (group 1) and 2 coats – two separate cures (group 2). Results: Axial microleakages were observed in both groups. However, the number of samples with axial microleakages in the group of curing each layer was less than that of the one-cure group after placing 2 layers of adhesive (2 samples of degree 3 in group II and 9 samples of degree 3 in group I). The degree of microleakages in the gigival wall of cavities in the two-cure group was significantly less than that of the one-cure group (p <0.05). Conclusion:The technique of applying two layers of adhesive and curing each layer can be a remedy to help overcome microleakage, one of the major challenges of composite recovery.