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3D有限元素分析和维布尔分析的上第一牙恢复与内冠与不同的脉延伸相比,与传统的皇冠与后核和核心

Qi Zhong¹, Zidi Zhai¹, Zi'ang Wu¹

¹Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; College of Stomatology, Shanghai Jiao Tong University, Shanghai, China; National Center for Stomatology, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai, China; Shanghai Key Laboratory of Stomatology, Shanghai, China; Shanghai Research Institute of Stomatology, Shanghai, China.

Computers in biology and medicine

|December 10, 2024

概括

有纤维增强复合材料 (FRC) 柱子的常规皇冠适用于严重损坏的牙. 具有3毫米脉延伸的脱酸内冠 (EC) 提供了一个替代方案,当传统的修复是不可行的.

科学领域:

牙科材料科学牙科材料科学
恢复性牙科恢复性牙科
生物材料工程是生物材料的工程.

背景情况:

修复经过内牙治疗的牙,但冠状腺损伤严重的牙,会带来重大的临床挑战.
缺乏明确的指导方针,用于在带有纤维增强复合材料 (FRC) 柱子的传统皇冠和内冠 (EC) 之间进行选择.
这些修复的最佳材料选择和脉延伸深度仍未确定.

研究的目的:

为了比较陶内冠 (EC) 与常规金冠与FRC柱子的断裂和解结阻力.
评估严重受损的上第一个 (MFM) 的修复策略.

主要方法:

用有限元分析 (FEA) 和韦布尔分析来评估7个具有不同恢复类型的MFM模型.
恢复类型包括具有FRC柱的常规皇冠和具有不同脉延伸 (3,4或5毫米) 的或二酸盐内冠.
模型经过模拟的垂直 (400 N) 和横向 (225 N) 间隙负载条件.

主要成果:

在这两种负载条件下,具有FRC后台的常规皇冠在剩余牙结构中表现出最低的应力.
具有5毫米脉延伸的二氧化内冠显示了水泥中最低的应力.
具有3毫米脉延伸的二氧化内冠显示了粘合界面的最小切割应力.

结论:

具有FRC柱子的传统皇冠仍然是修复有重大缺陷的MFM的可行选择.
具有3毫米脉延伸的二酸盐内冠为MFMs提供了合适的替代方案,因为传统的修复不适合.

关键词:

皇冠皇冠皇冠有限元素分析的研究.机械机械机械机械一个的毛.后台和核心技术技术.压力压力压力压力

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