The effect of different self-etching adhesive coating methods on the restoration effect of resin filling material
LIU Bao-juan
LI Wen-xi
Abstract：AIM:To study the effect of different coating methods on the restoration effect of composite resin filling material. METHODS:90 extracted human premolars were prepared into the samples for micro-tension test and divided into 3 groups (n=30). Clearfil S Bond was spread onece in group A,successively twice in group B, twice with 15 s standing interval in group C, kept standing for 15 s and tootling for 5 s, then Resin Z350 (3M) was adhered to the samples. The bonding strength of the composite resin to the tooth samples was tested using a micro tensile test machine. The clinical observation was performed to evaluate the bonding effect of the composite resin to the tooth in the restoration of the wedge shaped defect in 150 cases with 50 in each group( A,B and C) using above-mentioned methods respectively. The patients were followed up for 1 year. RESULTS:The microtensile strength( MPa) of group A,B and C was 10. 2 ± 2. 1, 32. 1 ± 3. 8 and 23. 3 ± 6. 7 respectively(B vs A or C, P<0. 05). Clinical observation showed that the prosthesis loss(%) was 6, 2 and 4 in group A,B and C respectively(B vs A or C, P<0. 05);unadaptation(%) 10,2 and 8 in group A, B and C respectively(B vs A or C, P<0. 05);discoloration(%) was 2 and secondary caries (%) was 4 in all groups. CONCLUSION:The method of double coating of the adhesive followed by single light cu-ring can be widely applied for the bonding of composite resin Z350 to teeth by adhesive Clearfil S Bond.
Keywords：adhesivecoating methodwedge shaped defectcomposite resinclinical effect
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 685-687 )