Optical characteristics of human extracted teeth and the possible application of photoplethysmography to the human pulp.
作者： M. Ikawa , H. Horiuchi , K. Ikawa
DOI: 10.1016/0003-9969(94)90012-4
关键词:
摘要: In order to record pulp blood flow by photoplethysmography, the light transmission properties of extracted human teeth and peripheral at wavelengths between 400 800 nm were first investigated. Transmission through was lower shorter than 600 nm. Transmitted-light photoplethysmography (TLP) applied in situ using a tungsten light, or one two light-emitting diodes (LED) with peak 565 695 A CdS-CdSe photoconductive cell used as detector. The LED intensity most efficient three sources for recording TLP. results indicate that TLP could be assess vitality.
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