The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of an Optical Probe for Measuring Blood Flow in Dental Pulp

치수혈류 측정을 위한 광 프로브 개발

  • 장경환 (연세대학교 생체공학협동과정) ;
  • 최준열 (연세대학교 의과학과) ;
  • 구정모 (연세대학교 생체공학협동과정) ;
  • 권민경 (연세대학교 의과학과) ;
  • 김덕원 (연세대학교 의과대학 의학공학교실)
  • Received : 2012.02.01
  • Accepted : 2012.07.10
  • Published : 2012.08.01
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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.

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References

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