Indentation damage and crack repair in human enamel.
Indentation damage and crack repair in human enamel.
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DOI：
10.1016/j.jmbbm.2013.02.020
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发表时间：
2013-05
影响因子：
3.9
通讯作者：
Ossa, A.
中科院分区：
文献类型：
--
作者：
Rivera, C.;Arola, D.;Ossa, A.
牙釉质是人体内最坚硬、矿化程度最高的组织。虽然已经有许多研究旨在了解这种组织的硬度和抗裂纹扩展行为，但还没有研究评估这种组织中的裂纹是否会进行修复。在这项研究中，我们评估了年轻人类牙釉质的裂纹修复特征，作为患者性别的函数以及与牙本质牙釉质交界处(DEJ)距离的函数。裂纹是通过沿棱镜方向的微压痕引入的，并在压痕后作为时间的函数进行评估。显微镜观察表明，裂纹的修复在裂纹萌生后立即开始，并在大约48小时后达到饱和。在此过程中，裂纹长度减少到初始长度的10%，最大程度的减少发生在离DEJ最近的深牙釉质中。此外，还发现女性患者牙釉质的修复程度明显更大。
Tooth enamel is the hardest and most highly mineralized tissue in the human body. While there have been a number of studies aimed at understanding the hardness and crack growth resistance behavior of this tissue, no study has evaluated if cracks in this tissue undergo repair. In this investigation the crack repair characteristics of young human enamel were evaluated as a function of patient gender and as a function of the distance from the Dentin Enamel Junction (DEJ). Cracks were introduced via microindentation along the prism direction and evaluated as a function of time after the indentation. Microscopic observations indicated that the repair of cracks began immediately after crack initiation and reaches saturation after approximately 48 hours. During this process he crack length decreased up to 10% of the initial length, and the largest degree of reduction occurred in the deep enamel, nearest the DEJ. In addition, it was found that the degree of repair was significantly greater in the enamel of female patients.
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影响因子：
2.4
作者：
Habelitz, S;Marshall, GW;Marshall, SJ
通讯作者：
Marshall, SJ
影响因子：
4.5
作者：
Quinn, JB;Quinn, GD
通讯作者：
Quinn, GD
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7.6
作者：
SOGNNAES, RF
通讯作者：
SOGNNAES, RF
影响因子：
14
作者：
Bajaj, Devendra;Arola, Dwayne D.
通讯作者：
Arola, Dwayne D.
影响因子：
9.7
作者：
Bajaj, Devendra;Arola, Dwayne
通讯作者：
Arola, Dwayne