Fried William A, Zhu Yihua, Yang Vincent, Chang Nai-Yuan, Fried Daniel
University of California, San Francisco, San Francisco, CA 94143-0758.
Proc SPIE Int Soc Opt Eng. 2020 Feb;11217. doi: 10.1117/12.2550981. Epub 2020 Feb 19.
New imaging methods are needed to assess the activity of caries lesions on tooth surfaces. Recent studies have shown that changes in the contrast of lesions during dehydration with air at SWIR wavelengths can be used to determine if lesions are active or arrested. In this study changes in the reflectance of caries lesions during dehydration with air was monitored at 1500-1750-nm on extracted teeth using an imaging system with an InGaAs camera, a light source and a 3D printed handpiece with an integrated air nozzle suitable for clinical use. Lesion structure was also assessed with optical coherence tomography and microCT for comparison. This small preclinical study demonstrated that a 3D printed appliance with integrated air for dehydration can be used to acquire SWIR dehydration curves similar to those acquired previously for benchtop imaging systems.
需要新的成像方法来评估牙齿表面龋损的活性。最近的研究表明，在短波红外（SWIR）波长下用空气脱水时病变对比度的变化可用于确定病变是活跃的还是静止的。在本研究中，使用配备铟镓砷（InGaAs）相机、光源和带有集成空气喷嘴的3D打印手持件（适用于临床）的成像系统，在1500 - 1750纳米波长下监测离体牙在空气脱水过程中龋损的反射率变化。还使用光学相干断层扫描和显微CT评估病变结构以作比较。这项小型临床前研究表明，带有集成空气脱水功能的3D打印装置可用于获取与之前台式成像系统所获得的类似的SWIR脱水曲线。
