Fabrication and evaluation of dental endoscopic instruments using fiber-optic system

M. Fujimoto, S. Yoshii, C. Kitamura, S. Ikezawa, T. Ueda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


The entrance of a tooth root canal is very small to the naked eye, and in most cases, dentists operate blindly to perform the treatment using an instrument. Particularly, the observation of fractures near the root apex and collaterals of root canals is difficult even using the latest dental instrument. To solve these problems, we attempted to develop a novel dental endoscope. In this study, we developed micro image sensors that can be used for observation of root canals and evaluation of the image sensor visibility. Previous methods have only single line visibility; however, the new method enables evaluation of the sectional visibility in the screen area. Compared with commercially available image sensors, the new image sensor has more than two times higher sectional visibility. Hence, the most focusing area can be analyzed and the aforementioned problems can be solved to improve image sensors. Moreover, not only the micro image sensors but also other sensors can be evaluated quantitatively using this new method.

Original languageEnglish
Title of host publicationIEEE Sensors, SENSORS 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982875
Publication statusPublished - 2017 Jan 5
Event15th IEEE Sensors Conference, SENSORS 2016 - Orlando, United States
Duration: 2016 Oct 302016 Nov 2


Other15th IEEE Sensors Conference, SENSORS 2016
Country/TerritoryUnited States


  • dentistry
  • gradient refractive index lens
  • image sensor
  • optical fiber
  • visibility

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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