Use of laser fluorescence in dental caries diagnosis: a fluorescence x biomolecular vibrational spectroscopic comparative study

The aim of this work was to verify the existence of correlation between Raman spectroscopy readings of phosphate apatite (∼960 cm−1), fluoridated apatite (∼575 cm−1) and organic matrix (∼1450 cm−1) levels and Diagnodent® readings at different stages of dental caries in extracted human teeth. The mea...

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Published in:Brazilian dental journal 2013, Vol.24 (1), p.59-63
Main Authors: Carvalho, Fabíola Bastos de, Barbosa, Artur Felipe Santos, Zanin, Fátima Antonia Aparecida, Brugnera Júnior, Aldo, Silveira Júnior, Landulfo, Pinheiro, Antonio Luiz Barbosa
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description The aim of this work was to verify the existence of correlation between Raman spectroscopy readings of phosphate apatite (∼960 cm−1), fluoridated apatite (∼575 cm−1) and organic matrix (∼1450 cm−1) levels and Diagnodent® readings at different stages of dental caries in extracted human teeth. The mean peak value of fluorescence in the carious area was recorded and teeth were divided in enamel caries, dentin caries and sound dental structure. After fluorescence readings, Raman spectroscopy was carried out on the same sites. The results showed significant difference (ANOVA, p
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The mean peak value of fluorescence in the carious area was recorded and teeth were divided in enamel caries, dentin caries and sound dental structure. After fluorescence readings, Raman spectroscopy was carried out on the same sites. The results showed significant difference (ANOVA, p&lt;0.05) between the fluorescence readings for enamel (16.4 ± 2.3) and dentin (57.6 ± 23.7) on carious teeth. Raman peaks of enamel and dentin revealed that ∼575 and ∼960 cm−1 peaks were more intense in enamel caries. There was significant negative correlation (p&lt;0.05) between the ∼575 and ∼960 cm−1 peaks and dentin caries. It may be concluded that the higher the fluorescence detected by Diagnodent the lower the peaks of phosphate apatite and fluoridated apatite. As the early diagnosis of caries is directly related to the identification of changes in the inorganic tooth components, Raman spectroscopy was more sensitive to variations of these components than Diagnodent. O objetivo desse estudo foi verificar por meio da espectroscopia Raman, a existência de correlação entre os níveis de apatita fosfatada (∼960 cm−1), apatita fluoretada (∼575 cm−1) e matriz orgânica (∼1450 cm−1) e as leituras do Diagnodent® em diferentes estágios de cárie dental em dentes humanos extraídos. O valor médio do pico de fluorescência na área da cárie foi anotado e os dentes divididos em cárie de esmalte, dentina e dente hígido. Após as leituras de fluorescência, foi realizada a espectroscopia Raman nos mesmos sítios. Os resultados mostraram diferença significante (ANOVA p&lt;0,05) entre as leituras de fluorescência para esmalte (16,4 ± 2,3) e dentina (57,6 ± 23,7) nos dentes cariados. Os picos Raman para esmalte e dentina evidenciaram que os picos ∼575 e ∼960 cm−1 foram mais intensos em cárie de esmalte. Houve correlação negativa e significante (p&lt;0,05) entre os picos ∼575 e ∼960 cm−1 e cárie de dentina. 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O diagnóstico precoce da cárie está diretamente relacionado com a identificação de mudanças nos componentes inorgânicos do dente, assim a espectroscopia Raman foi mais sensível para variações desses componentes quando comparada ao Diagnodent.</description><identifier>ISSN: 0103-6440</identifier><identifier>EISSN: 0103-6440</identifier><identifier>DOI: 10.1590/0103-6440201302123</identifier><language>eng</language><ispartof>Brazilian dental journal, 2013, Vol.24 (1), p.59-63</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3113-478e86b5f77566b537a572409c1b182fe18ff1e0a4d7246e02cd51cac94a1c3b3</citedby><cites>FETCH-LOGICAL-c3113-478e86b5f77566b537a572409c1b182fe18ff1e0a4d7246e02cd51cac94a1c3b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Carvalho, Fabíola Bastos de</creatorcontrib><creatorcontrib>Barbosa, Artur Felipe Santos</creatorcontrib><creatorcontrib>Zanin, Fátima Antonia Aparecida</creatorcontrib><creatorcontrib>Brugnera Júnior, Aldo</creatorcontrib><creatorcontrib>Silveira Júnior, Landulfo</creatorcontrib><creatorcontrib>Pinheiro, Antonio Luiz Barbosa</creatorcontrib><title>Use of laser fluorescence in dental caries diagnosis: a fluorescence x biomolecular vibrational spectroscopic comparative study</title><title>Brazilian dental journal</title><description>The aim of this work was to verify the existence of correlation between Raman spectroscopy readings of phosphate apatite (∼960 cm−1), fluoridated apatite (∼575 cm−1) and organic matrix (∼1450 cm−1) levels and Diagnodent® readings at different stages of dental caries in extracted human teeth. The mean peak value of fluorescence in the carious area was recorded and teeth were divided in enamel caries, dentin caries and sound dental structure. After fluorescence readings, Raman spectroscopy was carried out on the same sites. The results showed significant difference (ANOVA, p&lt;0.05) between the fluorescence readings for enamel (16.4 ± 2.3) and dentin (57.6 ± 23.7) on carious teeth. Raman peaks of enamel and dentin revealed that ∼575 and ∼960 cm−1 peaks were more intense in enamel caries. There was significant negative correlation (p&lt;0.05) between the ∼575 and ∼960 cm−1 peaks and dentin caries. It may be concluded that the higher the fluorescence detected by Diagnodent the lower the peaks of phosphate apatite and fluoridated apatite. As the early diagnosis of caries is directly related to the identification of changes in the inorganic tooth components, Raman spectroscopy was more sensitive to variations of these components than Diagnodent. 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The mean peak value of fluorescence in the carious area was recorded and teeth were divided in enamel caries, dentin caries and sound dental structure. After fluorescence readings, Raman spectroscopy was carried out on the same sites. The results showed significant difference (ANOVA, p&lt;0.05) between the fluorescence readings for enamel (16.4 ± 2.3) and dentin (57.6 ± 23.7) on carious teeth. Raman peaks of enamel and dentin revealed that ∼575 and ∼960 cm−1 peaks were more intense in enamel caries. There was significant negative correlation (p&lt;0.05) between the ∼575 and ∼960 cm−1 peaks and dentin caries. It may be concluded that the higher the fluorescence detected by Diagnodent the lower the peaks of phosphate apatite and fluoridated apatite. As the early diagnosis of caries is directly related to the identification of changes in the inorganic tooth components, Raman spectroscopy was more sensitive to variations of these components than Diagnodent. 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Pode-se concluir que quanto maior a fluorescência detectada pelo Diagnodent menor o pico da apatita fosfatada e fluoretada. O diagnóstico precoce da cárie está diretamente relacionado com a identificação de mudanças nos componentes inorgânicos do dente, assim a espectroscopia Raman foi mais sensível para variações desses componentes quando comparada ao Diagnodent.</abstract><doi>10.1590/0103-6440201302123</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
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title Use of laser fluorescence in dental caries diagnosis: a fluorescence x biomolecular vibrational spectroscopic comparative study
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