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公开(公告)号：US06584341B1
公开(公告)日：2003-06-24
申请号：US09628812
申请日：2000-07-28
IPC分类号： A61B600
CPC分类号： A61B5/0088
摘要： There is provided a metrologic methodology and instrument, useful for a high-spatial-resolution dynamic diagnostic metrology and instrument, which can provide simultaneous measurements of laser-induced frequency-domain infrared photothermal radiometry (FD-PTR) and alternating-current (ac) modulated luminescence (FD-LM) signals from defects and caries in teeth intraorally. The combination of the luminescence and radiometric frequency scan techniques for inspection of defects and caries in teeth involves irradiating the tooth with a modulated (direct-current (dc) to 100 kHz) excitation source (laser) emitting in the near-ultraviolet, visible, or near-infrared spectral range, generating blackbody Planck-radiation (infrared radiometry) and ac luminescence, and comparing the obtained (amplitude and phase) luminescence and radiometric signals to those obtained from a well characterized sample (reference) to provide the clinician with numerical information on the status of a tooth. The method and device is used to scan teeth intraorally to detect caries and classify caries or the integrity of the enamel or cementum surface, classify the health and integrity of the enamel at the base of occlusal fissures, classify the health and integrity of enamel or cementum surface of the tooth and defects around the margins of restorations, locate the presence of cracks on the enamel or cementum surface, and locate and characterize cracks in dentin on prepared teeth.
摘要翻译： 提供了一种用于高空间分辨率动态诊断计量和仪器的计量方法和仪器，可以提供激光诱导的频域红外光热辐射测量（FD-PTR）和交流（ac） 调制发光（FD-LM）信号从牙齿中的缺陷和龋齿。 用于检查牙齿中的缺陷和龋齿的发光和辐射测量频率扫描技术的组合包括用在近紫外线，可见光区域中发射的调制（直流（dc）至100kHz）激发源（激光）照射牙齿， 或近红外光谱范围，产生黑体普朗克辐射（红外辐射测量）和交流发光，并将获得的（振幅和相位）发光和辐射信号与从良好表征的样品（参考）获得的信号进行比较，以向临床医生提供数字 关于牙齿状况的信息。 该方法和装置用于口内扫描牙齿以检测龋齿和分类龋齿或釉质或牙骨质表面的完整性，将牙釉质基底处的牙釉质的健康和完整性分类，分类牙釉质或牙骨质的健康和完整性 牙齿表面和修复边缘周围的缺陷，定位在牙釉质或牙骨质表面上存在裂纹，并定位并表征牙齿上的牙质上的裂纹。
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