Development of Diagnostic Device for the Tooth Crack Using Transmitted Light

투과 광을 이용한 치아 균열 진단기 개발

  • Yang, Jeong Su (Technology Service Division for SMEs, Korea Institute of Industrial Technology) ;
  • Seo, Hyo-Gi (Research Institute, Linkoptics Cooperation) ;
  • Lee, Joon-Seok (Research Institute, Linkoptics Cooperation) ;
  • Choi, Keum Yeon (Research Institute, Linkoptics Cooperation) ;
  • Cho, Jin-Hyoung (Department of Orthodontics, Chonnam National University)
  • 양정수 (한국생산기술연구원 중소기업기술인력지원단) ;
  • 서효기 ((주)링크옵틱스 부설연구소) ;
  • 이준석 ((주)링크옵틱스 부설연구소) ;
  • 최금연 ((주)링크옵틱스 부설연구소) ;
  • 조진형 (전남대학교 치의학전문대학원)
  • Received : 2016.02.24
  • Accepted : 2016.03.28
  • Published : 2016.05.01


In order to acquire clear images capable of diagnosing cracked tooth by light transmission, the optical properties of LED light source were examined. Based on the results, the prototype which basically consisted of LED light source, bandpass filter and commercial compact camera module was designed and manufactured. The wavelength and optical power of the LED in the prototype were 850 nm and 7 mW/Sr, respectively. In evaluation of the prototype using microscope, the observation of the crack with width of above $17{\mu}m$ was possible. In addition, image analysis to obtain shape information on the observed tooth cracks was carried out.


Supported by : 한국산업기술진흥원


  1. C. E. Cameron, J. Am. Dent. Assoc., 93, 971 (1976). [DOI:]
  2. J. W. Gibbs and D. Digest., 60, 158 (1974).
  3. E. Denis and I.I.I. Simon, AAE Newsletter Fall/winter (1997).
  4. W. R. Cho, D. G. Kim, C. J. Park, and L. R. Cho, J. Dent. Rehabil. Appl. Sci., 27, 305 (2011).
  5. D. J. Clark, C. G. Sheets, and J. M. Paquette, J. Esthet Restor Dent, 15, 391 (2003).
  6. M. Danijela, T. Zrinka, M. Snezana, M. Zlatko, P. Lana, and P. Goran, Acta Stomatologica Croatica, 44, 232 (2010). [DOI:]