Optical determination of dental pulp vitality
Optical determination of dental pulp vitality
复制标题
牙髓活力的光学测定
DOI：
--
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发表时间：
1991
影响因子：
4.6
通讯作者：
E. C. Walker
中科院分区：
文献类型：
--
作者：
J. Schmitt;R. Webber;E. C. Walker
探讨光电容积描记法和脉搏血氧仪用于评价牙髓血液循环状态的可行性。建立了一个简单的光度计，测量漫射光透射575 nm的记录牙齿体积描记图和区分的能力，从手术失活的狗的牙齿使用体积描记术。作为光体积描记技术的延伸，使用体外试验装置检查应用于测量牙髓中血液的氧饱和度（SO/sub 2/）的红红外脉搏血氧饱和度。结果表明，相对SO/sub 2/变化的测量是可行的，但标准的双波长脉搏血氧仪不允许确定SO/sub 2/独立的牙齿几何形状和传感器的位置。实际问题的设计能够可靠地检测牙髓体积描记的光学生命计进行了讨论。<<ETX>>
The feasibility of employing photoplethysmography and pulse oximetry to assess the status of blood circulation in dental pulp was explored. A simple photometer that measures diffuse light transmission at 575 nm was built to record tooth plethysmograms and the ability to distinguish the vital from the surgically devitalized teeth of a dog using plethysmography was demonstrated. As an extension of the photoplethysmographic technique, red-infrared pulse oximetry applied to the measurement of the oxygen saturation (SO/sub 2/) of blood in the pulp was examined using an in vitro test setup. Results suggest that the measurement of relative SO/sub 2/ changes is feasible, but standard dual-wavelength pulse oximetry does not allow determination of SO/sub 2/ independent of tooth geometry and sensor placement. Practical issues concerning the design of an optical vitalometer capable of reliably detecting the tooth pulp plethysmogram are discussed.<<ETX>>