The Relationship of Dehydration Rate and Transparent Surface Layer Thickness for Coronal Lesions on Extracted Teeth.
The Relationship of Dehydration Rate and Transparent Surface Layer Thickness for Coronal Lesions on Extracted Teeth.
复制标题
拔牙冠状病变脱水率与透明表层厚度的关系。
DOI：
10.1117/12.2512921
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Fried,Daniel
中科院分区：
文献类型：
--
作者：
Chang,Nai-YuanN;Abdelaziz,Marwa;Fried,Daniel
在自然龋损上发现的透明的矿化表面区域可降低对水和牙菌斑产生的酸的渗透性。结合脱水的近红外（NIR）反射成像可用于测量釉质和牙本质中病变的液体渗透性的变化。先前的工作表明，模拟牙釉质损伤中表面区厚度与脱水率之间呈负相关。本研究测定了离体牙冠状病变的脱水率和透明表层厚度，并进行了相关性分析。使用在1695-1750 nm的NIR波长下的反射成像来对这些釉质病变进行成像，所述NIR波长与较高的水吸收一致，并且在脱水测量期间对对比度变化表现出最大的敏感性。使用光学相干断层扫描（OCT）确定的表面层厚度的平均值。
Transparent remineralized surface zones found on natural caries lesions may reduce the permeability to water and plaque generated acids. Near-IR (NIR) reflectance imaging coupled with dehydration can be used to measure changes in the fluid permeability of lesions in enamel and dentin. Previous work demonstrated a negative association between the surface zone thickness and the rate of dehydration in simulated enamel lesions. In this study, the rates of dehydration and thickness of transparent surface layer of coronal lesions of extracted teeth were measured and correlated. Reflectance imaging at NIR wavelengths from 1695-1750 nm, which coincides with higher water absorption and manifests the greatest sensitivity to contrast changes during dehydration measurements, was used to image these enamel lesions. The remineralized surface layer thickness was determined using optical coherence tomography (OCT).