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Auto‐fluorescence spectra of oral submucous fibrosis
Author(s) -
Chen HsinMing,
Wang ChihYu,
Chen ChinTin,
Yang Hsiang,
Kuo YingShiung,
Lan WanHong,
Kuo Mark YenPing,
Chiang ChunPin
Publication year - 2003
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1034/j.1600-0714.2003.00112.x
Subject(s) - oral submucous fibrosis , leukoplakia , pathology , chemistry , fluorescence , hyperkeratosis , connective tissue , oral mucosa , emission spectrum , analytical chemistry (journal) , medicine , spectral line , cancer , optics , physics , chromatography , astronomy
Background: Oral submucous fibrosis (OSF) is a chronic oral mucosal disease characterized by progressive deposition of collagen in the subepithelial connective tissue and epithelial atrophy. Previous studies have shown that at 330‐nm excitation, the 380‐ and 460‐nm emission peaks of the auto‐fluorescence spectra for oral mucosal tissues reflect the collagen content in the subepithelial connective tissue and the nicotinamide adenine dinucleotide phosphate (NADH) content in the epithelial cells, respectively. Therefore, at 330‐nm excitation OSF mucosa may have a higher 380‐nm emission peak and a lower 460‐nm emission peak than the normal oral mucosa (NOM). Methods: To test the above hypothesis, we measured the in vivo auto‐fluorescence spectra of 59 OSF mucosal sites and compared the measured spectra with auto‐fluorescence spectra obtained from 15 NOM samples from 15 healthy volunteers, five samples of friction hyperkeratosis (histologic diagnosis, hyperkeratosis and acanthosis) on OSF buccal mucosa (FHOSF), and 29 samples of oral leukoplakia (histologic diagnosis, hyperkeratosis and acanthosis) on OSF buccal mucosa (OLOSF). Results: We found that the spectrum of the OSF mucosa had a significantly higher 380‐nm emission peak and a significantly lower 460‐nm emission peak than the spectra of NOM, FHOSF, and OLOSF samples. When the mean (±SD) fluorescence intensities at 380 ± 15 nm ( I 380 ± 15 nm ) and 460 ± 15 nm ( I 460 ± 15 nm ) emission peaks and the mean ratio of I 460 ± 15 nm / I 380 ± 15 nm were compared between groups, we found that OSF group had a significantly higher mean value of I 380 ± 15 nm , a significantly lower mean value of I 460 ± 15 nm , and a significantly lower mean ratio of I 460 ± 15 nm / I 380 ± 15 nm than the NOM, FHOSF, and OLOSF groups ( P < 0.001). However, no significant differences in the mean values of I 380 ± 15 nm , I 460 ± 15 nm , and ratio of I 460 ± 15 nm / I 380 ± 15 nm were found between NOM and FHOSF or OLOSF samples as well as between FHOSF and OLOSF samples ( P > 0.05). Conclusion: Because OSF mucosa has a very unique pattern of auto‐fluorescence spectrum, we conclude that auto‐fluorescence spectroscopy is a good method for real‐time diagnosis of OSF.