Imaging of occlusal dental caries (decay) with near-IR light at 1310-nm
Imaging of occlusal dental caries (decay) with near-IR light at 1310-nm
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DOI：
10.1364/opex.13.000573
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发表时间：
2005-01-24
期刊：
影响因子：
3.8
通讯作者：
Fried, D
中科院分区：
文献类型：
--
作者：
Bühler, CM;Ngaotheppitak, P;Fried, D
牙釉质在近红外线中表现出高透明度。先前的工作表明，1310 nm的近红外光非常适合邻间龋齿（牙齿之间的龋齿）的透照[ 1]。然而，大多数新的蛀牙发生在后牙咬合面的凹坑和裂缝中。由于牙冠的重叠地形，这些龋齿病变在龋齿的早期阶段不能通过X射线检测到。在这项研究中，一个近红外成像系统在1310 nm的工作被用来获取咬合图像发射近红外光到颊面的牙齿牙龈边缘（牙龈线）。近红外光通过高度散射的牙本质扩散，为牙冠的牙釉质提供均匀的背面照明，从而允许咬合面成像。近红外图像显示，健全和脱矿区域之间的对比度很高.脱矿（腐烂）可以很容易地与着色、色素沉着和矿化不足（氟中毒）区分开来。此外，釉质的高透明度使得能够在更大的深度成像，以检测隐藏在釉质下的表面下的腐烂。这些早期的图像表明，近红外线提供了显着的优势，传统的视觉，触觉和放射学龋齿检测方法。(C)2005年，美国光学学会。
Dental enamel manifests high transparency in the near-IR. Previous work demonstrated that near-IR light at 1310-nm is ideally suited for the transillumination of interproximal dental caries ( dental decay in between teeth) [ 1]. However, most new dental decay occurs in the pits and fissures of the occlusal ( biting) surfaces of posterior teeth. These caries lesions cannot be detected by x-rays during the early stages of decay due to the overlapping topography of the crown of the tooth. In this study, a near-IR imaging system operating at 1310-nm was used to acquire occlusal images by launching the near-IR light into the buccal surface of the tooth just above the gingival margin (gum-line). The near-IR light diffuses through the highly scattering dentin providing uniform back illumination of the enamel of the crowns allowing imaging of the occlusal surfaces. The near- IR images show high contrast between sound and demineralized areas. Demineralization ( decay) can be easily differentiated from stains, pigmentation, and hypomineralization ( fluorosis). Moreover, the high transparency of the enamel enables imaging at greater depth for the detection of subsurface decay hidden under the enamel. These early images suggest that the near- IR offers significant advantages over conventional visual, tactile and radiographic caries detection methods. (C) 2005 Optical Society of America.