A novel dentin bond strength measurement technique using a composite disk in diametral compression.

A novel dentin bond strength measurement technique using a composite disk in diametral compression.
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DOI:
10.1016/j.actbio.2011.12.036
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发表时间:
2012-04
期刊:
影响因子:
9.7
通讯作者:
Fok, Alex
Fok, Alex
中科院分区:
工程技术1区
文献类型:
--
作者:
Huang, Shih-Hao;Lin, Lian-Shan;Rudney, Joel;Jones, Rob;Aparicio, Conrado;Lin, Chun-Pin;Fok, Alex

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评价改良巴西圆盘法测定牙本质后界面粘结强度的可行性。创新性地采用了声发射(AE)和数字图像相关(DIC)等先进的无损检测和成像技术,对断裂过程进行了真实的实时捕捉。DIC显示应变集中首先出现在后牙本质界面的一侧。界面应变集中的出现也与检测到的第一个AE信号相吻合。该方法具有试样制备简单、无早期破坏、破坏模式一致性好、计算的粘结强度变化小等优点。
We evaluated the feasibility of using the modified Brazilian disk test to measure the post-dentin interfacial bond strength. Advanced nondestructive examination and imaging techniques in the form of acoustic emission (AE) and digital image correlation (DIC) were used innovatively to capture the fracture process in real time. DIC showed strain concentration first appearing at one of the lateral sides of the post-dentin interface. The appearance of the interfacial strain concentration also coincided with the first AE signal detected. The new method has the advantages of simpler specimen preparation, no premature failure, more consistent failure mode and smaller variations in the calculated bond strength.
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