论文部分内容阅读
目的:探讨树脂固化体系配方对TMPT添加型试制牙本质封闭剂的黏结及聚合性能影响。方法:以“劲润”牙本质保护膜(HyC)和前期实验试制的TMPT添加型牙本质封闭剂T33作为对照,调整其中樟脑醌(CQ)含量,配制6组CQ实验封闭剂,通过测试牙本质剪切黏结强度,找出黏结强度最大的CQn组,作为下一步实验基材;调整HyC原装海绵中N-苯基甘氨酸(NPG)含量,配制5组NC实验海绵,测试其与CQn配合使用时的牙本质黏结强度和聚合转化率。采用SPSS13.0软件包对数据进行统计学分析。结果:CQ实验封闭剂组中,CQ3显示最大黏结强度,约12.99 MPa。以CQ3为基材,与各NPG实验海绵组配合使用时,NPG4.4和NPG7.3组显示最大黏结强度,约为14.68 MPa和14.69 MPa;同时也显示了最大聚合转化率,与对照组相比,差异显著(P<0.05);结论:针对TMPT添加型试制牙本质封闭剂,当液体中CQ含量与专用海绵中NPG含量的摩尔比为1∶4.4或1∶7.3时,可在不降低材料聚合性能的同时,显著提高牙本质黏结强度,其材料学性能及远期效果有待于进一步证实。
Objective: To investigate the effect of resin curing system on the adhesion and polymerization of TMPT-added trial dentin sealant. Methods: Hyc (Hyc) and TMPT-added dentin sealant T33 prepared in the previous experiment were used as controls to adjust the contents of camphorquinone (CQ) and prepare six groups of CQ experimental sealants Test dentin shear bond strength, to find the bond strength CQn group, as the next experimental substrate; adjust HyC original sponge N-phenylglycine (NPG) content, preparation of five groups of NC experimental sponge, test and CQn Dentin bond strength and polymerization conversion when used in combination. SPSS13.0 software package for statistical analysis of the data. Results: CQ experimental blocker group, CQ3 shows the maximum bond strength, about 12.99 MPa. When CQ3 was used as the base material, NPG4.4 and NPG7.3 groups showed the maximum bond strength of 14.68 MPa and 14.69 MPa, respectively, when they were used with the NPG sponge group. The maximum polymerization conversion rate was also observed at the same time as the control group phase (P <0.05). CONCLUSION: For the TMPT-added trial dentin sealant, when the molar ratio of CQ content in liquid to NPG content in special sponge is 1: 4.4 or 1: 7.3, Materials polymerization performance, while significantly improving dentin bond strength, the material properties and long-term effect needs further confirmation.