In-vitro Thermal Maps to Characterize Human Dental Enamel and Dentin.
In-vitro Thermal Maps to Characterize Human Dental Enamel and Dentin.
复制标题
用于表征人类牙釉质和牙本质的体外热图
DOI：
10.3389/fphys.2017.00461
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发表时间：
2017
影响因子：
4
通讯作者：
Clerehugh V
中科院分区：
文献类型：
--
作者：
Lancaster P;Brettle D;Carmichael F;Clerehugh V
人类牙齿的牙冠有一层高度矿化的组织，称为釉质，其下是牙本质，一种形成牙冠和牙根的大部分的矿化程度较低的组织。牙釉质和牙本质的组成和结构不同，导致其热性能不同。这提供了一个机会，以表征釉质和牙本质从他们的热性能，并在视觉上呈现的结果作为一个热图。脱矿牙釉质和牙本质的热特性也可能与在热图上看到的健康组织有很大的不同，这是未来龋齿热评估的基础。这项新研究的主要目的是产生一个健全的，人类牙齿切片的热图，以直观地表征牙釉质和牙本质。第二个目的是映射一个人的牙齿切片与脱矿釉质和牙本质考虑未来的诊断潜力的热图龋齿检测。将两个人类牙齿切片，一个是完好的，另一个是来自自然龋损的脱矿物质的，在冰上冷却，然后转移到30°C的热板上，其中通过红外热摄像机捕获再加热序列。进行了热扩散率和热导率的计算，并使用定制软件的两种数据处理方法，从热特性-松弛时间和热交换产生热图。这两种类型的热图表征了牙釉质和牙本质。此外，在两个地图中，健全的和脱矿的牙釉质和牙本质都是可以区分的。这支持龋齿的热评估，需要对整个牙齿进行进一步的研究。
The crown of a human tooth has an outer layer of highly-mineralized tissue called enamel, beneath which is dentin, a less-mineralized tissue which forms the bulk of the tooth-crown and root. The composition and structure of enamel and dentin are different, resulting in different thermal properties. This gives an opportunity to characterize enamel and dentin from their thermal properties and to visually present the findings as a thermal map. The thermal properties of demineralized enamel and dentin may also be sufficiently different from sound tissue to be seen on a thermal map, underpinning future thermal assessment of caries. The primary aim of this novel study was to produce a thermal map of a sound, human tooth-slice to visually characterize enamel and dentin. The secondary aim was to map a human tooth-slice with demineralized enamel and dentin to consider future diagnostic potential of thermal maps for caries-detection. Two human slices of teeth, one sound and one demineralized from a natural carious lesion, were cooled on ice, then transferred to a hotplate at 30°C where the rewarming-sequence was captured by an infra-red thermal camera. Calculation of thermal diffusivity and thermal conductivity was undertaken, and two methods of data-processing used customized software to produce thermal maps from the thermal characteristic-time-to-relaxation and heat-exchange. The two types of thermal maps characterized enamel and dentin. In addition, sound and demineralized enamel and dentin were distinguishable within both maps. This supports thermal assessment of caries and requires further investigation on a whole tooth.
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影响因子：
7.6
作者：
Marcenes, W.;Kassebaum, N. J.;Murray, C. J. L.
通讯作者：
Murray, C. J. L.
影响因子：
3.3
作者：
K端nzel, A;Scherkowski, D;Becker, J
通讯作者：
Becker, J
影响因子：
4.4
作者：
Zakian, C. M.;Taylor, A. M.;Pretty, I. A.
通讯作者：
Pretty, I. A.
影响因子：
4.4
作者：
Park, Kyung-Jin;Haak, Rainer;Schneider, Hartmut
通讯作者：
Schneider, Hartmut
影响因子：
3.3
作者：
Li, G.;Berkhout, W. E. R.;van der Stelt, P. F.
通讯作者：
van der Stelt, P. F.