J Endod:不同治疗选择对不成熟牙齿生物力学的影响:一项有限元应力分析

2018-01-03 lishiting MedSci原创

不成熟牙齿(IT)依据其牙齿的活力不同,可以选择多种治疗方法进行处理。这篇有限元应力分析的目的是为了评估不同治疗程序对不成熟牙齿3维模型应力的影响。

不成熟牙齿(IT)依据其牙齿的活力不同,可以选择多种治疗方法进行处理。这篇有限元应力分析的目的是为了评估不同治疗程序对不成熟牙齿3维模型应力的影响。研究创建了3维有限元应力分析前磨牙模型作为对照(model 1),修改后作为模拟IT。研究创建了11个模型模拟分别充填不同材料的IT:(model 2)氢氧化钙(CH), (model 3) MTA, (model 4)生物牙本质(B), (models 5和6) MTA plug和B plug但未进行根充, (models 7和8) MTA plug和B plug并且通过复合修复进行根充以及使用CH进行牙髓切断术(model 9) , (model 10) MTA和(model 11) B。材料和结构假定是均匀和各向同性的。从功能尖和135°角的中央窝向模型施加300 N的负荷,并使用Cosmosworks结构分析程序。结果按照冯米塞斯标准进行处理,并且比例范围限定在0-10 + MPa。结果显示,使用CH与临时充填相比较会增加牙根的应力。与B充填相比较时,MTA充填会减弱牙根应力。MTA和B plug会增加根尖和牙根的应力;然而,当牙根

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    2018-01-05 zhouqu_8
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    2018-01-04 飛歌

    特意学习了很有用

    0

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    2018-01-04 明月清辉

    谢谢分享.学习了

    0

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    2018-01-03 changjiu

    学习一下谢谢

    0

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    2018-01-03 131****2916

    不错的文章值得推荐

    0

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