Abstract
The current study aims to investigate a suitable adhesive for primary tooth enamel.Shear bond strength(SBS)of primary teeth and the length of resin protrusion were analyzed using one-way ANOVA with Bonferroni multiple comparison tests after etching with 35％H3PO4.SBS and marginal microleakage tests were conducted with Single Bond Universal(SBU)/Single Bond 2(SB2)adhesives with or without pre-etching using a nonparametric Kruskal-Wallis test.Clinical investigations were performed to validate the adhesive for primary teeth restoration using Chi-square tests.Results showed that the SBS and length of resin protrusion increased significantly with the etching time.Teeth in the SBU with 35％H3PO4 pre-etching groups had higher bond strength and lower marginal microleakage than those in the SB2 groups.Mixed fractures were more common in the 35％H3PO4 etched 30 s+SB2/SBU groups.Clinical investigations showed significant differences between the two groups in cumulative retention rates at the 6-,12-and 18-month follow-up evaluations,as well as in marginal adaptation,discoloration,and secondary caries at the 12-and 18-month follow-up assessments.Together,pre-etching primary teeth enamel for 30 s before SBU treatment improved clinical composite resin restoration,which can provide a suitable approach for restoration of primary teeth.
基金项目
Technology Development Fund of Nanjing Medical University(NMUB2016115)
Technology Development Fund of Nanjing Medical University(NMUB2020117)
维普
万方数据