Infrared imaging confirms the role of the transparent surface zone in arresting dental caries.
Infrared imaging confirms the role of the transparent surface zone in arresting dental caries.
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红外成像证实了透明表面区域在阻止龋齿方面的作用。
DOI：
10.1117/12.2584907
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Fried,Daniel
中科院分区：
文献类型：
--
作者：
Liu,Hao;Chang,Nai-Yuan;Gao,Wanrong;Fried,Daniel
几项研究已经证明了短波长红外（SWIR）反射，热成像和光学相干断层扫描的潜力，对龋齿病变的活动进行无损评估。本研究的目的是测试的假设，逮捕龋齿病变的冠状面上提取的牙齿，将通过减少高度矿化的透明表面层，这是使用偏振敏感光学相干断层扫描（PS-OCT）测量的厚度改变的活动。在机械去除覆盖损伤的约50 μm厚的表面层之前和之后，在损伤的强制空气干燥期间，使用SWIR反射率和热成像评估损伤活性。干燥后病灶表面矿化层厚度减小，病灶表面1500 ~ 1750 nm波长处SWIR反射图像强度变化和8-13 μm波长处热发射变化均显著增加（P<0.05），表明病灶对液体的渗透性增加。这些结果提供了进一步的证据，即高度矿化的外表面层的存在是病变停止的关键指标。
Several studies have demonstrated the potential of short wavelength infrared (SWIR) reflectance, thermal imaging and optical coherence tomography for the nondestructive assessment of the activity of caries lesions. The purpose of this study was to test the hypothesis that the activity of arrested caries lesions on the coronal surfaces of extracted teeth would be changed by reducing the thickness of the highly mineralized transparent surface layer, which was measured using polarization sensitive optical coherence tomography (PS-OCT). The lesion activity was assessed using SWIR reflectance and thermal imaging during forced air drying of the lesion before and after mechanical removal of a surface layer ~ 50-μm thick covering the lesion. Both the intensity change in SWIR reflectance images at 1500- 1750-nm wavelengths after drying the lesions and the change in thermal emission measured with a thermal camera at 8-13-μm wavelengths increased significantly (P<0.05) after reducing the thickness of the mineralized surface layer in the lesions indicating the permeability of the lesion to fluids increased. These results provide further evidence that the presence of a highly mineralized outer surface layer is a key indicator of lesion arrest.