Image guided laser ablation of demineralization from root surfaces.
Image guided laser ablation of demineralization from root surfaces.
复制标题
图像引导激光消融根部表面的脱矿质。
DOI：
10.1117/12.2512938
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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：
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作者：
Dhillon,Navitinder;Chan,KennethH;Yang,VincentB;Fried,Daniel
由于宫颈糜烂、牙结石形成和牙本质重度染色，识别牙根病变的脱矿区域具有挑战性。我们已经发现，根龋可以在超过1500 nm的短波红外（SWIR）波长下以极高的对比度成像。激光非常适合于从牙齿表面选择性地去除龋齿病变。用波长为9.3 μm的CO2激光和波长为1880 nm的掺铥光纤激光联合应用，选择性去除离体牙的根面龋。在1880-nm处的连续SWIR反射图像被用来引导CO2激光用于图像引导激光烧蚀。使用交叉偏振光学相干断层扫描（CP-OCT）评估切除前病变的初始深度，并评估CO2激光切除的声音和脱矿组织的体积。通过这种图像引导的方法，我们相信我们可以实现高度选择性的病变切除和对周围健康组织的最小损伤。
It is challenging to identify demineralized areas of root lesions due to cervical erosion, calculus formation, and heavy staining of dentin. We have found that root caries can be imaged with extremely high contrast at short wavelength IR (SWIR) wavelengths beyond 1500-nm. Lasers are well suited for the selective removal of caries lesions from tooth surfaces. A CO2laser operating at a wavelength of 9.3-μm was combined with a thuliumdoped fiber laser operating at 1880-nm for the selective removal of root caries lesions from extracted teeth. Serial SWIR reflectance images at 1880-nm were used to guide the CO2laser for image-guided laser ablation. Cross polarization optical coherence tomography (CP-OCT) was used to assess the initial depth of the lesions before removal and assess the volume of sound and demineralized tissue removed by the CO2laser. With this image-guided approach, we believe we can achieve highly selective lesion removal and minimal damage to surrounding sound tissues.