Durability of Siloxane-bond between Ceramic and Resin Cement after Water-storage

陶瓷与树脂水泥之间硅氧烷键蓄水后的耐久性

• 批准号: 17591994
• 负责人: UNEMORI Masako
• 金额: $ 2.24万
• 依托单位: KYUSHU UNIVERCITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17591994/
• 关键词: siloxane bond; ceramic; resin cement; durability after water-storage; acidic phosphate monomer; mirror finish; ポーセレン; 接着強度; セラミックス

Objective : To analyze micro-tensile bond strength between resin cement and a ceramic with a mirror finished surface that eliminated the effect of mechanical retention on the bond strength, and to investigate the durability of siloxane-bonds formed by an acidic phosphate monomer activated silane coupling agent.Methods : Ceramic specimen (approximately 7 x 7 x 10mm) was prepared from feldspathic porcelain (Super Porcelain AAA, Noritake), and was polished to obtain a mirror finished surface with diamond compounds. After an ultrasonic cleaning, the surface was treated by a silane coupling agent (PORCELAIN BOND ACTIVATOR, Kuraray) activated with an acidic phosphate monomer (MEGA BOND PRIMER, Kuraray). Two silanated specimens were bonded each other using 4-META/MMA-TBB resin cement (Super-Bond, Sun Medical) at 37℃ in air for at least 24 h. Then the bonded specimen was sliced into beams with a mean cross-sectional area of 1.070.12mm2. They were immersed in water (Group 1) or stored in air (C … More ontrol) at 37℃. After 0 (baseline),1,2,4 and 8 weeks, they were subjected to micro-tensile bond strength tests at a crosshead speed of 1mm/min. The same experiment was also performed using the silane coupling agent activated with an acidic solution of pH=2.4 (Group 2) instead of the acidic monomer and the silane coupling agent alone (Group 3).Results : The average baseline strength was about 26 MPa and all air-stored specimens gave similar strengths for all aging durations. The specimens stored in water tended to give lower strengths but there was no pronounced weakening due to the hydrolysis of siloxane bond up to 8 weeks. Multiple linear regression analysis revealed that the bond strength is significantly lower in specimens immersed in water than those stored in air (p<0.05), while the bond strength was not significantly decreased during aging. Moreover, there was no significant difference between Group 1 and Group 2 for all aging durations. On the other hand, Group 3 gave significantly lower bond strength compared to Groups 1 and 2, with a p-value less than 0.01.Conclusions : Within the limitation of the present in vitro study, it can be concluded that the durability of siloxane-bond between 4-META/MMA-TBB resin cement and feldspathic porcelain is derived from the acidification of the silane coupling agent. Less

目的：分析树脂水泥与具有镜面抛光表面的陶瓷之间的微拉伸粘结强度，该表面消除了机械保留对粘结强度的影响，并研究由酸性磷酸盐单体活化的硅烷偶联剂形成的硅氧烷键的耐久性。方法：陶瓷样品（约7 x 7 x 10 mm）由菱晶瓷（Super Porcelain AAA，Noritake）制备，并抛光以获得具有金刚石化合物的镜面抛光表面。超声波清洗后，通过用酸性磷酸盐单体（MEGA BOND PRIMER，Kuraray）活化的硅烷偶联剂（PORCELAIN BOND ACTIVATOR，Kuraray）处理表面。使用4-Meta/MMA-TBB树脂骨水泥（Super-Bond，Sun Medical）在37℃空气中将两个硅烷化样本相互粘合至少24 h。然后将粘结的试样切成平均横截面积为1.07 ± 0.12mm 2的梁。将它们浸泡在水中（组1）或储存在空气中（C ...更多信息 对照组）。0后分别于第1、2、4、8周，在1 mm/min的十字头速度下进行微拉伸粘结强度测试。用pH=2.4的酸性溶液活化的硅烷偶联剂（第2组）代替酸性单体和单独的硅烷偶联剂（第3组）进行相同的实验。平均基线强度约为26 MPa，所有空气储存样本在所有老化持续时间内的强度相似。储存在水中的样品倾向于产生较低的强度，但由于硅氧烷键的水解长达8周，没有明显的弱化。多元线性回归分析表明，浸泡在水中的试样的粘结强度显著低于空气中的试样（p<0.05），而老化过程中粘结强度没有显著降低。此外，对于所有老化持续时间，组1和组2之间没有显著差异。另一方面，第3组的粘结强度显著低于第1组和第2组，p值小于0.01。结论：在本体外研究的范围内，4-Meta/MMA-TBB树脂水门汀与金刚石瓷之间的粘结耐久性主要来源于硅烷偶联剂的酸化。少

项目成果

Long-term follow-up of composite resin restorations with self-etching adhesives

自酸蚀粘合剂复合树脂修复体的长期随访

• 发表时间: 2007
• 期刊: Journal of Dentistry 35・6
• 作者: Nakaoki Y;Sasakawa W;Noda M;Inoue S;Komatsu N;Sano H.;Unemori M et al.
• 通讯作者: Unemori M et al.