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http://dx.doi.org/10.5370/KIEE.2012.61.8.1204

Development of an Optical Probe for Measuring Blood Flow in Dental Pulp  

Jang, Kyung-Hwan (연세대학교 생체공학협동과정)
Choi, Joon-Yul (연세대학교 의과학과)
Koo, Jeong-Mo (연세대학교 생체공학협동과정)
Kwon, Min-Kyung (연세대학교 의과학과)
Kim, Deok-Won (연세대학교 의과대학 의학공학교실)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.8, 2012 , pp. 1204-1209 More about this Journal
Abstract
To diagnose dental pulp vitality, electric pulp tester has been widely used, which is a method to test condition of nerve. However, especially in the case of patients with trauma, nerve desensitization could temporarily occur even though nerve might be recovered by blood flow within the pulp later, which implies that blood flow in dental pulp is also an important factor for diagnosing vitality. This paper described the development of a probe that relatively measured blood flow in dental pulp using photoplethysmography (PPG). The probe emits four different wavelength light sources including three visible and an infrared light. We tested which light source detect sensitively the blood flow in dental pulp. As a result, green light had the largest peak to peak voltage and the power spectrum among different wavelengths.
Keywords
Dental pulp; Vitality; Blood flow; Photoplethysmography; Probe;
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