磷酸酯单体PENTA与牙科氧化锆陶瓷结合的化学证据

›› 2018, Vol. 38 ›› Issue (3): 217-221.

磷酸酯单体PENTA与牙科氧化锆陶瓷结合的化学证据

卢枳岑¹,陈莹²,谢海峰²,张怀勤³,陈晨⁴

1. 江苏省口腔医院
2. 南京医科大学
3. 江苏省口腔医院修复科
4. 南京医科大学附属口腔医院

收稿日期:2017-10-17 修回日期:2017-12-05 出版日期:2018-03-28 发布日期:2018-03-16
通讯作者: 陈晨 E-mail:ccchicy@njmu.edu.cn
基金资助:
国家自然科学基金;江苏省自然科学基金;江苏省高校自然科学基金;江苏高校优势学科建设工程资助项目;江苏省高等学校大学生实践创新训练计划项目指导项目

Chemical evidence of the combination of a phosphate ester monomer PENTA and dental material zirconia

Received:2017-10-17 Revised:2017-12-05 Online:2018-03-28 Published:2018-03-16

摘要/Abstract

摘要： 目的提供磷酸酯单体双季戊四醇五丙烯酸酯磷酸酯（Dipentaerythritol penta-acrylate phosphate，PENTA）与牙科氧化锆陶瓷结合的化学证据，分析PENTA提高牙科氧化锆陶瓷粘接的机理。方法配置包含PENTA的质量分数为5%、10%、15%、20%的实验性底涂剂，用其处理Y-TZP（Yttria-stabilized tetragonal zirconia polycrystals）瓷粉，随后以丙酮反复清洗去除游离成分后分别进行红外光谱分析（fourier transform infrared spectroscopy，FTIR）和热重分析（thermogravimetric analysis，TG）。FTIR分析以10%PENTA丙酮溶液作为对照，分别采用二阶导数分峰和残差分峰两种方法对FTIR图谱磷酸基团特征峰进行分峰分析；TG以空白Y-TZP粉作为对照。结果两种FTIR分峰分析结果一致，均表明各种浓度的包含PENTA的底涂剂与Y-TZP陶瓷接触后，磷酸基团的P-O键振动所产生的波峰向波数减小的方向移动。热重结果证明PENTA能够化学吸附于Y-TZP表面，高浓度组的PENTA与氧化锆的反应程度更高。结论 PENTA能够与Y-TZP发生化学结合，该化学反应的存在依赖于PENTA分子中的磷酸基团发挥作用。

关键词: 氧化锆, 磷酸酯单体, 红外光谱, 化学证据, 表面处理, 粘接

Abstract: Objective The combination of phosphate ester monomers PENTA (Dipentaerythritol penta-acrylate phosphate) and dental Y-TZP (Yttria-stabilized tetragonal zirconia polycrystals) was proved by chemical method to explain why PENTA was able to enhance the bonding affinity between resin and zirconia. Methods 5%, 10%, 15%, 20% experimental PENTA primers were prepared and then conditioned with Y-TZP powders. Powders were washed repeatedly by acetone to wipe off the dissociative component and tested by FTIR (fourier transform infrared spectroscopy) and TG (thermogravimetric analysis). FTIR analysis focused on the changes between 10% PENTA in acetone solvent and the powders conditioned with different experimental primers. Peak fitting was carried out according to second derivations and the residual. The Y-TZP powder without primers was set as the control group in TG test. Result Two different peak fitting methods both indicated that the vibration of the P-O bond went towards lower wavenumber after PENTA conditioned with Y-TZP powder. TG test showed that PENTA with higher concentration reacted with Y-TZP more completely. Conclusion The chemical reaction between PENTA and Y-TZP relies on the phosphate group.

Key words: Zirconia, Phosphate ester monomer, FTIR, Chemical evidence, Surface treatments, Bonding

中图分类号:

R783.1

卢枳岑陈莹谢海峰张怀勤陈晨. 磷酸酯单体PENTA与牙科氧化锆陶瓷结合的化学证据[J]. , 2018, 38(3): 217-221.

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