不同表面处理对Bio-HPP与PMMA粘结强度影响的研究

doi:10.13701/j.cnki.kqyxyj.2020.03.009

口腔医学研究 ›› 2020, Vol. 36 ›› Issue (3): 226-229.DOI: 10.13701/j.cnki.kqyxyj.2020.03.009

不同表面处理对Bio-HPP与PMMA粘结强度影响的研究

施巧蕊, 徐鑫, 于皓, 郑明^*

福建省口腔生物材料工程技术研究中心福建医科大学附属口腔医院特诊科福建福州 350001

收稿日期:2019-05-20 出版日期:2020-05-15 发布日期:2020-05-15
通讯作者: 郑明,E-mail:zmdentist@163.com
作者简介:施巧蕊(1985~),女,福建宁德人,硕士,医师,研究方向:口腔修复学。
基金资助:
福建省教育厅科研项目(课题编号:JAT160199)

Effect of Different Surface Treatments on Bond Strength of Bio-HPP to PMMA

SHI Qiaorui, XU Xin, YU Hao, ZHENG Ming^*

Department of VIP Detal Service, Fujian Provincal Engineering Research Center of Oral Biomaterial & School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350001, China

Received:2019-05-20 Online:2020-05-15 Published:2020-05-15

摘要/Abstract

摘要： 目的：采用喷砂、Nd:YAG激光对聚醚醚酮生物复合材料(Bio-HPP)进行表面处理,观察其对Bio-HPP与聚甲基丙烯酸甲酯(PMMA)间粘接效果的影响。方法：68个Bio-HPP试件随机分成4组:CG、SA_0.05、SA_0.35、LA;表面处理后,扫描电镜观察,测试表面粗糙度;试件与PMMA粘接后一半浸泡蒸馏水24 h,另一半冷热循环5000次,万能试验机测试剪切强度。结果：扫描电镜观察,LA,SA较CG表面粗糙;表面粗糙度:CG＜LA＜SA_0.05＜SA_0.35;剪切强度结果,CG＜LA＜SA_0.05＜SA_0.35,5 000次冷热循环后较浸泡24 h均有下降,CG、SA_0.05、LA剪切强度降低明显,具有统计学差异(P＜0.05)。结论：喷砂,Nd:YAG激光处理可以改变Bio-HPP表面形貌,提高Bio-HPP的粘接性能,适当提高喷砂压强有利于Bio-HPP与PMMA粘接的稳定。

关键词: Bio-HPP, 喷砂, Nd:YAG激光, 表面粗糙度, 剪切强度

Abstract: Objective: To investigate the influence of different surface treatments on the bond strength between Bio-HPP and PMMA. Methods: 68 Bio-HPP specimens were prepared and divided into 4 groups randomly:CG, SA_0.05, SA_0.35,and LA. After surface pretreatments, the surface morphology was observed by SEM and the surface roughness was measured by surface roughness tester. And then they were bonded to PMMA, half of specimens in each group were stored in distilled water for 24 h and the others were received 5 000 times of thermalcycling. Next, shear bond strength was tested by universal test machine. Results: SEM results showed that LA and SA were rougher than CG. Surface roughness was: CG＜LA＜SA_0.05＜SA_0.35. Shear strength was: CG＜LA＜SA_0.05＜SA_0.35. After thermalcycling, the shear bond strength decreased significantly except SA_0.35 group (P＜0.05). Conclusion: Sandblast and Nd:YAG laser can change the surface topography and improve the shear bond strength of Bio-HPP. The proper increase of the sandblast pressure might benefit to the stability of Bio-HPP to PMMA.

Key words: Bio-HPP, sandblast, Nd:YAG laser, surface roughness, shear strength

施巧蕊, 徐鑫, 于皓, 郑明. 不同表面处理对Bio-HPP与PMMA粘结强度影响的研究[J]. 口腔医学研究, 2020, 36(3): 226-229.

SHI Qiaorui, XU Xin, YU Hao, ZHENG Ming. Effect of Different Surface Treatments on Bond Strength of Bio-HPP to PMMA[J]. Journal of Oral Science Research, 2020, 36(3): 226-229.

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不同表面处理对Bio-HPP与PMMA粘结强度影响的研究

Effect of Different Surface Treatments on Bond Strength of Bio-HPP to PMMA

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