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J Korean Acad Pediatr Dent. 2003;30(1): 153-160.
Effect of CO2 Laser on Caries Inhibition Evaluated by Laser Fluorescence Measurement
김성형, 이광희, 김대업, 이지영, 송인경
광대학교 치과대학 소아치과학교실, 원광치의학연구소
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ABSTRACT
The purpose of study was to evaluate the effects of the CO2 laser irradiation on demineralization inhibition and rehardening of human primary tooth enamel by laser fluoresecence measurement. Enamel specimens were made from the human primary teeth. The center spots of the specimens about 2 mm diameter were irradiated by CO2 laser at the conditions of focused continuous or defocused pulsed, 3 or 6 W, for 4 seconds, before or after the demineralization by Coca-Cola for 24 hours at 37℃. The Diagnodent was used to measure the degree of demineralization and rehardening. There was no significant difference between focused continuous and defocused pulsed irradiation. 6W irradiation inhibited the demineralization but 3W did not. 6W irradiation rehardened the demineralized enamel but 3W did partially. The color of enamel was changed to brown to black after 6W irradiation but 3W caused no color change. CO2 laser irradiation showed the effects on demineralization inhibition and rehardening of human priamary tooth enamel, and the laser fluoresecence measurement technique seemed to be a valid evaluation method.
Keywords: CO2 laser | Primary teeth | Demineralization | Rehardening | Fluorescence
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