PDF(Pubmed)
Abstract：
BACKGROUND: Enamel is highly transparent at short wavelength infrared imaging (SWIR) wavelengths allowing the detection of dental decay without the need for ionizing radiation. The purpose of this study was to use SWIR imaging methods including cross polarization optical coherence tomography (CP-OCT), occlusal transillumination (SWIR-OT), proximal transillumination (SWIR-PT), and occlusal reflectance (SWIR-R) to image interproximal lesions in vivo and compare the sensitivity with radiography.
METHODS: Participants (n = 30) aged 18-80 each with a radiopositive interproximal lesion scheduled for restoration were enrolled in the study. Studies have shown that the opposing proximal surfaces across the contact will likely also have lesions. SWIR images were acquired of the adjoining teeth at each contact with an interproximal lesion scheduled for restoration. Lesion presence and depth were assessed on each side of the contact for radiography and each SWIR imaging method. Lesions on radiographs and in CP-OCT images were identified by a single examiner while lesions in SWIR images were identified by a contrast threshold via semi-automatic image segmentation.
RESULTS: All SWIR imaging methods had significantly higher sensitivity (P < 0.05) than radiographs for the detection of interproximal lesions on the teeth opposite those restored. CP-OCT and SWIR-R imaging methods had significantly higher sensitivity than the other methods. SWIR imaging methods showed significantly higher lesion contrast than radiography.
CONCLUSIONS: SWIR imaging methods can be used to detect interproximal lesions on posterior teeth with higher diagnostic performance than radiographs. CP-OCT appears well suited as a potential gold standard for the detection of interproximal lesions and assessment of their severity in vivo.
METHODS: Participants (n = 30) aged 18-80 each with a radiopositive interproximal lesion scheduled for restoration were enrolled in the study. Studies have shown that the opposing proximal surfaces across the contact will likely also have lesions. SWIR images were acquired of the adjoining teeth at each contact with an interproximal lesion scheduled for restoration. Lesion presence and depth were assessed on each side of the contact for radiography and each SWIR imaging method. Lesions on radiographs and in CP-OCT images were identified by a single examiner while lesions in SWIR images were identified by a contrast threshold via semi-automatic image segmentation.
RESULTS: All SWIR imaging methods had significantly higher sensitivity (P < 0.05) than radiographs for the detection of interproximal lesions on the teeth opposite those restored. CP-OCT and SWIR-R imaging methods had significantly higher sensitivity than the other methods. SWIR imaging methods showed significantly higher lesion contrast than radiography.
CONCLUSIONS: SWIR imaging methods can be used to detect interproximal lesions on posterior teeth with higher diagnostic performance than radiographs. CP-OCT appears well suited as a potential gold standard for the detection of interproximal lesions and assessment of their severity in vivo.
摘要：
背景:牙釉质在短波长红外成像(SWIR)波长下是高度透明的,从而允许在不需要电离辐射的情况下检测龋齿。这项研究的目的是使用SWIR成像方法，包括交叉偏振光学相干断层扫描（CP-OCT），咬合透照(SWIR-OT)，近端透照（SWIR-PT），和咬合反射（SWIR-R）以在体内对邻间病变进行成像，并将其灵敏度与放射线照相术进行比较。
方法：纳入研究的受试者（n=30），年龄为18-80岁，计划修复的邻间放射阳性病变。研究已经表明,跨越接触的相对的近侧表面也可能具有损伤。每次与计划恢复的邻间病变接触时，都会获取相邻牙齿的SWIR图像。在接触的每一侧评估病变的存在和深度，以进行射线照相和每种SWIR成像方法。X线照片和CP-OCT图像中的病变由单个检查者识别，而SWIR图像中的病变通过半自动图像分割通过对比度阈值识别。
结果：所有SWIR成像方法在检测与修复牙相对的牙上的邻间病变时，灵敏度均明显高于X线片（P<0.05）。CP-OCT和SWIR-R成像方法的灵敏度明显高于其他方法。SWIR成像方法显示病变对比度明显高于放射线照相术。
结论：SWIR成像方法可用于检测后牙的邻间病变，其诊断性能高于X光片。CP-OCT似乎非常适合作为潜在的金标准，用于检测邻间病变并评估其体内严重程度。
方法：纳入研究的受试者（n=30），年龄为18-80岁，计划修复的邻间放射阳性病变。研究已经表明,跨越接触的相对的近侧表面也可能具有损伤。每次与计划恢复的邻间病变接触时，都会获取相邻牙齿的SWIR图像。在接触的每一侧评估病变的存在和深度，以进行射线照相和每种SWIR成像方法。X线照片和CP-OCT图像中的病变由单个检查者识别，而SWIR图像中的病变通过半自动图像分割通过对比度阈值识别。
结果：所有SWIR成像方法在检测与修复牙相对的牙上的邻间病变时，灵敏度均明显高于X线片（P<0.05）。CP-OCT和SWIR-R成像方法的灵敏度明显高于其他方法。SWIR成像方法显示病变对比度明显高于放射线照相术。
结论：SWIR成像方法可用于检测后牙的邻间病变，其诊断性能高于X光片。CP-OCT似乎非常适合作为潜在的金标准，用于检测邻间病变并评估其体内严重程度。
