TMPT添加型牙本质封闭剂的改良研究

发布时间：2019-04-26 17:59

【摘要】：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(P0.05);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。
[Abstract]:Objective: to investigate the effect of resin curing system on the bonding and polymerization properties of TMPT additive dentin sealant. Methods: the content of camphor quinone (CQ) was adjusted by contrast with the dentin protective membrane (HyC) and TMPT additive T33, which were used as control. Six groups of CQ sealants were prepared. By testing the shear bond strength of dentin, the CQn group with the highest bonding strength was found to be the next experimental substrate. The content of N-phenylglycine (NPG) in the original sponge of HyC was adjusted to prepare five groups of NC experimental sponges. The dentin bonding strength and polymerization conversion of the sponges were measured when they were used in combination with CQn. The data were analyzed by SPSS13.0 software package. Results: in the CQ experimental sealant group, CQ3 showed the maximum bond strength (about 12.99 MPa.). When CQ3 was used in combination with each NPG experimental sponge group, the maximum bonding strength of NPG4.4 and NPG7.3 groups was about 14.68 MPa and 14.69 MPa;. At the same time, it also showed the maximum conversion rate of polymerization, compared with the control group, the difference was significant (P0.05). Conclusion: when the molar ratio of the content of CQ in the liquid to the content of NPG in the special sponge is 1? 4.4 or 1: 7.3, the polymerization properties of the dentine sealant can be reduced without decreasing the polymerization performance of the material, according to the experimental preparation of dentin sealant added with TMPT. The dentin bond strength was significantly improved, and its material properties and long-term effects should be further confirmed.
【作者单位】：西安交通大学口腔医院修复科;西安市第九医院口腔科;
【基金】：陕西省科学技术研究发展计划项目(社发攻关2013K12-16-05)~~
【分类号】：R783.1

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