OPTICAL SENSITIVITY OF LASER FLUORESCENCE FOR INCIPIENT CARIES DETECTION

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Journal of the Korean Academy of Pediatric Dentistry 1999;26(1):109-118.
Published online February 28, 1999.

OPTICAL SENSITIVITY OF LASER FLUORESCENCE FOR INCIPIENT CARIES DETECTION

초기우식병소에 대한 레이저 fluorescence의 광학적 탐지감도

김효석, 김왕근, 이창섭, 이상호

조선대학교 치과대학 소아치과학교실, 조선대학교 구강생물학연구소

Abstract

The aim of this study was to evaluate the optical density of laser fluorescence for detection of incipient caries. Prepared and polished bovine enamel specimens were demineralized in a STPP solution for varying periods of time between 3 hrs. and 60 hrs. with an area of sound enamel retained on each specimen. The randomized specimens were analyzed for optical density of enamel demineralization using laser fluorescence. The specimens were sectioned and examined lesion depth by polarizing light microscope. Results were analyzed statistically with SAS program. The results from this study can be summarized as follows: 1. Optical density measured by laser fluorescence and lesion depth measured by polarizing light microscope was increased as demineralization time was increased(p<0.001). 2. Between optical density measured by laser fluorescence and lesion depth measured by polarizing light microscope was correlated highly(γ≥0.74956, p<0.001). 3. Regressive equation was obtained in this study as follows. Y=[X-0.260851]/0.000271(R-square:0.5618, p<0.001) (X:DENSITY, Y:DEPTH) In summary, optical density measured by laser fluorescence would be within the range of possibility to quantitatively presume demineralization amount of incipient caries lesion

Key Words: Laser, Laser fluorescence, Incipient caries, Optical density