喷砂对不同树脂与纯钛粘结抗剪强度及粘结耐久力的影响

›› 2016, Vol. 36 ›› Issue (5): 407-410.

喷砂对不同树脂与纯钛粘结抗剪强度及粘结耐久力的影响

王宁¹,钱冬冬²,骆小平³,李芷⁴

1. 南京大学附属口腔医院
2. 南京市口腔医院
3. 南京大学医学院附属口腔医院修复科
4. 南京大学口腔医学院

收稿日期:2015-12-03 修回日期:2016-01-07 出版日期:2016-05-28 发布日期:2016-06-01
通讯作者: 钱冬冬 E-mail:1607421321@163.com
基金资助:
南京医学科技发展项目

Effect of sandblasting on the shear bond strength and durability of three resin cements bonded to titanium

Received:2015-12-03 Revised:2016-01-07 Online:2016-05-28 Published:2016-06-01

摘要/Abstract

摘要： 目的探讨喷砂处理对不同树脂与纯钛粘结抗剪强度及粘结耐久力的影响。方法用牙科铸钛的方法制作φ5㎜×5㎜及φ4㎜×2.0㎜的圆柱形钛段各96个，两种规格的钛段配对（共96对）。分成实验组和对照组。实验组钛粘接表面用50μm Al2O3喷砂，对照组钛表面不做处理。分别用Super-Bond C&B(SB) 、Panavia F(PF)和Rely X Unicem(RU)按生产厂商提供的要求将大、小钛段成对粘接。分为SB未喷砂、SB喷砂、PF未喷砂、PF喷砂、RU未喷砂、RU喷砂6组(每组16对)。将以上每组中的一半样品(每组8对)置于37 ℃水浴箱内24 h，,另一半样品水储24 h后再进行5000次冷热循环。将样品固定于MTS测试机上进行剪切强度的测试，计算粘结抗剪强度值。不同粘结剂组的粘结抗剪强度采用考虑交互作用的两因素方差分析进行统计学分析。结果冷热循环前，RU未喷砂组的粘接抗剪强度最低，SB喷砂组粘接抗剪强度最高，为（28.03±8.40）MPa，5000次冷热循环后，PF喷砂组粘接抗剪强度最高，为（27.12±8.68） MPa， RU未喷砂组最低。冷热循环前，SB喷砂组和SB未喷砂组，RU喷砂组和RU未喷砂组的粘接抗剪强度值差异有统计学意义（P＜0.05）。5000次冷热循环后，R U喷砂组和R U未喷砂组的粘接抗剪强度值差异有统计学意义（P＜0.05）。SB未喷砂组、SB喷砂组5000次冷热循环前、后的粘接抗剪强度值差异有统计学意义（P＜0.05）。其余各组5000次冷热循环前、后的粘接抗剪强度值差异没有统计学意义（P＞0.05）。结论喷砂能显著提高铸造纯钛与SB、RU的粘接抗剪强度及粘结耐久力，但不是和所有树脂与纯钛的粘接抗剪强度及粘结耐久力成正相关关系。

关键词: 【关键词】喷砂, 树脂粘结剂, 铸造纯钛, 粘接抗剪强度, 冷热循环

Abstract: Objective To evaluate the effect of sandblasting on the shear bond strength and durability of three resin cements bonded to titanium. Methods Titanium in two sizes (φ5 mm×5 mm, φ4 mm×2 mm) were fabricated with titanium casting technology for dentistry, each size consisted of 96 specimens, and the two sizes were paired up to 96 pairs. The paired specimens were divided into the experiment group and the control group. The experiment group was sandblasted with 50 μm Al2O3 particle，the control group was untreated. The paired titanium specimens were bonded by Super-Bond C&B (SB), Panavia F (PF) and Rely X Unicem (RU), according to manufacturer’s recommendations. The specimens were divided into 6 groups (SB sandblasted, SB un-sandblasted, PF sandblasted, PF un-sandblasted, RU sandblasted, RU un-sandblasted), each of which consisted of 16 pairs of specimens. 8 pairs of each group were immersed in water bath at 37 ℃ for 24 hours, the other 8 pairs were treated with 5 000 cycles of thermocycling after being immersed in water at 37 ℃ for 24 hours. The shear bond strength was evaluated by the MTS testing machine. The values of each group were compared by two- factor ANOVA with interaction analysis. Results Before thermocycling, the shear bond strength of RU un-sandblasted group was the lowest, and the highest results were obtained in SB sandblasted group (28.03±8.40) MPa. After thermocycling, the highest strengths were obtained in PF sandblasted group (27.12±8.68) MPa, and the lowest results were obtained in RU un-sandblasted group. Before thermocycling, the shear bond strengths of SB sandblasted and SB un-sandblasted groups were statistically different (P＜0.05), which was also true for RU sandblasted and RU un-sandblasted groups. After thermocycling, the results of RU sandblasted and RU un-sandblasted were still different (P＜0.05). Thermocycling statistically affected the shear bond strengths in SB sandblasted and SB un-sandblasted groups (P＜0.05). Other results were not statistically different (P＞0.05). Conclusion Sandblasting can significantly increase the shear bond strength and durability of SB and RU bonded to titanium, but it isn’t positively correlated with the shear bond strength and durability of all resin cements bonded to titanium.

Key words: [keywords] sandblasting , resin cement, casting pure titanium, shear bond strength, thermocycling

中图分类号:

R783.2

王宁钱冬冬骆小平李芷. 喷砂对不同树脂与纯钛粘结抗剪强度及粘结耐久力的影响[J]. , 2016, 36(5): 407-410.

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