ft-raman spectroscopic characterization of enamel surfaces irradiated with er:yag and nd:yag lasers
نویسندگان
چکیده
background and aims: although dental caries is a preventable disease, it is still common and remains a public health problem. one of the potentially effective preventive measures is laser irradiation. raman spectroscopy is a powerful technique for studying the microcrystalline structure of dental enamel. the study assessed the chemical alterations occurring in enamel irradiated with er:yag or nd:yag lasers, by means of ft-raman spectroscopy. material and methods: fifteen freshly-extracted human molars were treated as follows: no treatment in group a (n=5); 10 seconds irradiation with er:yag laser at 4 mm from the tooth surface, under water and air spray, in group b (n=5); 10 seconds irradiation with nd:yag laser, at 1 mm from the tooth surface, with 300 µm fiber used in a sweeping motion, in group c (n=5). after treatment, specimens were analyzed by ft-raman spectroscopy. results: analysis of the carbonate content in terms of the integrated area under the curve (1065/960cm–1) showed a statistically-significant reduction in the integrated area ratio, in both laser-irradiated groups. the integrated area of organic content (2935/960 cm-1) showed a statistically-significant reduction after laser irradiation, in both irradiated groups. conclusions: the results show that laser irradiation affects both mineral and organic matrix of dental enamel, and may thus be a suitable strategy for caries prevention; the ft-raman technique appears appropriate to detect such compositional and structural changes.
منابع مشابه
FT-Raman spectroscopic characterization of enamel surfaces irradiated with Nd:YAG and Er:YAG lasers
Background. Despite recent advances in dental caries prevention, caries is common and remains a serious health problem. Laser irradiation is one of the most common methods in preventive measures in recent years. Raman spectroscopy technique is utilized to study the microcrystalline structure of dental enamel. In this study, FT-Raman spectroscopy was used to evaluate chemical changes in enamel s...
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عنوان ژورنال:
journal of dental research, dental clinics, dental prospectsجلد ۱۰، شماره ۴، صفحات ۲۰۷-۲۱۲
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