Shear bond strength of an acrylic resin to a ceria-stabilized zirconia-alumina nanocomposite
Shear bond strength of an acrylic resin to a ceria-stabilized zirconia-alumina nanocomposite
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丙烯酸树脂与二氧化铈稳定的氧化锆-氧化铝纳米复合材料的剪切粘合强度
DOI：
10.1016/j.prosdent.2021.01.019
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Baba Kazuyoshi
中科院分区：
文献类型：
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作者：
Tanaka Shinpei;Kobayashi-Hisamatsu Mari;Miyazaki Takashi;Baba Kazuyoshi
问题说明铈稳定的氧化锆-氧化铝纳米复合材料（Ce-TZP-Al2O3）具有适用于局部义齿框架的性能。然而，对其与义齿基托树脂的粘附强度和耐久性研究较少。目的研究ce - tzp - al2o3的最佳表面处理方法，以确保其与丙烯酸树脂的持久结合。材料与方法将ce - tzp - al2o3试样表面进行气相氧化铝颗粒研磨处理（APA组），然后采用10-甲基丙烯酰氧十二基磷酸二氢（MDP组）和2种二氧化硅涂层方法：火焰喷涂法（SLP组）和摩擦化学处理（110 μm: TRB-P组，30 μm: TRB-S组）。再用MDP治疗TRB-P和TBR-S （CBT-P组和CBT-S组）。将自聚合丙烯酸树脂粘接在试件上，热循环（5℃和60℃，循环10000次）后测试剪切粘接强度。还测量了树脂残留在断裂表面上的面积。为了评估表面处理条件对剪切结合强度和树脂残留的影响，我们进行了单因素方差分析（ANOVA），然后进行了Tukey多重比较事后检验。此外，通过Studentttest评估了热循环对试件的影响。结果在去离子水中放置24h后，MDP组和CBT-P、CBT-S两种联合处理组的剪切结合强度显著高于SLP、TRB-P、TRB-S组（P< 0.05）。除APA组外，其余各组骨折面均出现内聚失败。热循环后各处理条件下的剪切粘接强度均显著降低（P< 0.05）。CBT-S组剪切粘结强度最高；而CBT-S组与MDP组间无显著差异（P=.908）。其中，CBT-S组断裂面上树脂残留面积为100%（粘结破坏）。结论氧化铝气载颗粒磨蚀和摩擦化学表面处理结合硅烷偶联和MDP单体底漆处理，提高了基础树脂与Ce-TZP-Al2O3的粘附强度和粘附耐久性。
Statement of problemCeria-stabilized zirconia-alumina nanocomposite (Ce-TZP-Al2O3) has properties that may be suitable for partial denture frameworks. However, studies on its adhesion strength and durability with denture base resin are lacking.PurposeThe purpose of this in vitro study was to determine the optimal surface treatment for Ce-TZP-Al2O3to secure a durable bond with an acrylic resin.Material and methodsThe surface of Ce-TZP-Al2O3test specimens was alumina airborne-particle abraded (Group APA) and then treated with 10-methacryloyloxydecyl dihydrogen phosphate (MDP) (Group MDP) and 2 silica coating methods: the flame spraying method (Group SLP) and the tribochemical treatment (110 μm: Group TRB-P, 30 μm: Group TRB-S). TRB-P and TBR-S were further treated by MDP (Group CBT-P and CBT-S). Autopolymerizing acrylic resin was bonded to the specimens, and the shear bond strength was tested after thermocycling (5 °C and 60 °C, 10 000 cycles). The area of the resin remaining on the fractured surfaces was also measured. To evaluate the effect of the surface treatment condition on shear bond strength and the resin remaining, 1-way analysis of variance (ANOVA) was conducted, followed by the Tukey multiple comparison post hoc test. Additionally, the effect of thermocycling on the specimens was evaluated by the Studentttest.ResultsAfter placement in deionized water for 24 hours, the shear bond strengths of Group MDP and 2 types of combination treatment (Groups CBT-P and CBT-S) were significantly higher than those of Groups SLP, TRB-P, and TRB-S (P<.05). Moreover, the fractured surface of all the treatment conditions except Group APA showed cohesive failure. The shear bond strength as a result of all treatment conditions decreased significantly after thermocycling (P<.05). Group CBT-S showed the highest shear bond strength; however, no significant differences were found between Groups CBT-S and MDP (P=.908). In particular, the area of resin remaining on the fractured surfaces of Group CBT-S was 100% (cohesive failure).ConclusionsThe combined surface treatment of alumina airborne-particle abrasion and tribochemical treatment, along with primer treatment using silane coupling and an MDP monomer, improved the adhesion strength and adhesion durability between base resins and Ce-TZP-Al2O3.