Accelerated fatigue of dentin with exposure to lactic acid
Accelerated fatigue of dentin with exposure to lactic acid
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DOI：
10.1016/j.biomaterials.2013.07.090
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发表时间：
2013-11-01
期刊：
影响因子：
14
通讯作者：
Arola, Dwayne D.
中科院分区：
文献类型：
--
作者：
Do, Dominic;Orrego, Santiago;Arola, Dwayne D.
复合修复体比其他牙科材料能积累更多的生物膜。这增加了支持修复体的硬组织(即牙本质和牙釉质)暴露在超过饮食变化所致的酸性条件下的可能性。本文研究了人冠牙本质在乳酸溶液(pH=5)中的疲劳强度和抗疲劳裂纹扩展能力，并与在中性条件(pH=7)中评价的对照组进行了比较。疲劳寿命分布的比较表明，乳酸暴露使疲劳强度显著降低(p<0.05)。
Composite restorations accumulate more biofilm than other dental materials. This increases the likelihood for the hard tissues supporting a restoration (i.e. dentin and enamel) to be exposed to acidic conditions beyond that resulting from dietary variations. In this investigation the fatigue strength and fatigue crack growth resistance of human coronal dentin were characterized within a lactic acid solution (with pH = 5) and compared to that of controls evaluated in neutral conditions (pH = 7). A comparison of the fatigue life distributions showed that the lactic acid exposure resulted in a significant reduction in the fatigue strength (p