Fatigue failure of dentin-composite disks subjected to cyclic diametral compression.
Fatigue failure of dentin-composite disks subjected to cyclic diametral compression.
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DOI：
10.1016/j.dental.2015.03.014
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发表时间：
2015-07
期刊：
影响因子：
5
通讯作者：
Fok, Alex
中科院分区：
文献类型：
--
作者：
Li, Yuping;Carrera, Carola;Chen, Ruoqiong;Li, Jianying;Chen, Yungchung;Lenton, Patricia;Rudney, Joel. D.;Jones, Robert S.;Aparicio, Conrado;Fok, Alex
关键词：
我们的目的是在径向压缩测试中使用新开发的圆盘来建立牙本质-复合材料界面的循环载荷和疲劳寿命之间的关系。然后将结果用于估计修复牙齿在咬合载荷下的疲劳寿命。使用牛门牙制备椎间盘样本（直径 5mm × 厚 2mm），并使用带有 Adper Single Bond Plus (Z100) 的甲基丙烯酸酯复合材料 Z100™ 或带有 LS System 粘合剂 (LS) 的硅烷基复合材料 Filtek ™ LS 进行修复。牙本质复合盘在循环直径压缩下进行测试，以确定三个负载水平（每组 n = 3）下的失效周期数 (Nf)。有限元分析 (FEA) 用于计算样本内的界面应力 (σ)，建立 σ 与 Nf 曲线，以及正常咀嚼力（最大 15N）下修复牙齿内的界面应力。然后将这些数据用于估计两个修复系统的修复牙齿的寿命。用LS修复的磁盘比用Z100修复的磁盘具有更高的抗疲劳性。由有限元分析确定的修复牙齿的最大界面应力为∼0.5MPa。根据每年 300,000 次咀嚼周期的估计，使用 LS 和 Z100 修复的牙齿在咬合负荷下的预测寿命分别为 33 年和 10 年。循环直径压缩中的圆盘已成功用于提供疲劳数据，从而可以使用数值模拟来预测咬合载荷下复合材料修复牙齿的寿命。
Our aim was to establish the relationship between cyclic loading and fatigue life of the dentin-composite interface using the newly developed disk in diametral compression tests. The results were then used to estimate the fatigue life of restored teeth under occlusal loading. Disk specimens (5mm dia. × 2mm thick) were prepared using bovine incisors and restored with either a methacrylate-based composite Z100™ with Adper Single Bond Plus (Z100) or silorane-based composite Filtek ™ LS with LS System adhesive (LS). The dentin-composite disks were tested under cyclic diametral compression to determine the number of cycles to failure (Nf) at three load levels (n = 3 per group). Finite element analysis (FEA) was used to calculate the interfacial stresses (σ) within the specimen, to establish the σ vs. Nf curves, and those within a restored tooth under normal chewing forces (15N maximum). These were then used to estimate the lifetime of the restored tooth for the two restorative systems. The disks restored with LS had a higher fatigue resistance than those restored with Z100. The maximum interfacial stress in the restored tooth determined by FEA was ∼0.5MPa. Based on the estimate of 300,000 cycles of chewing per year, the predicted lifetime under occlusal loading for teeth restored with LS and Z100 was 33 and 10 years, respectively. The disk in cyclic diametral compression has been used successfully to provide fatigue data which allows the lifetime of composite-restored teeth under occlusal loading to be predicted using numerical simulation.
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影响因子：
9.7
作者：
Li, Y.;Carrera, C.;Chen, R.;Li, J.;Lenton, P.;Rudney, J. D.;Jones, R. S.;Aparicio, C.;Fok, A.
通讯作者：
Fok, A.
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影响因子：
14
作者：
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通讯作者：
Arola, Dwayne D.
影响因子：
4.4
作者：
Burke, FJT;Wilson, NHF;Mjör, IA
通讯作者：
Mjör, IA
影响因子：
14
作者：
Do, Dominic;Orrego, Santiago;Arola, Dwayne D.
通讯作者：
Arola, Dwayne D.
影响因子：
5
作者：
Huang, Shih-Hao;Lin, Lian-Shan;Lin, Chun-Pin
通讯作者：
Lin, Chun-Pin