CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge
ABSTRACT Objective This in situ/ex vivo study investigated the effect of CO2 laser irradiation and acidulated phosphate fluoride gel (APF) application, separately and in combination, on enamel resistance to erosion. Material and Methods During 2 experimental 5-day crossover phases, 8 volunteers wore intraoral appliances containing bovine enamel blocks which were submitted to four groups: 1st phase - control, untreated and CO2 laser irradiation, 2nd phase - fluoride application and fluoride application before CO2 laser irradiation. Laser irradiation was performed at 10.6 µm wavelength, 5 µs pulse duration and 50 Hz frequency, with average power input and output of 2.3 W and 2.0 W, respectively (28.6 J/cm2). APF gel (1.23%F, pH 3.5) was applied on enamel surface with a microbrush and left on for 4 minutes. Then, the enamel blocks were fixed at the intraoral appliance level. The erosion was performed extraorally 4 times daily for 5 min in 150 mL of cola drink. Enamel loss was measured profilometrically after treatment and after the in situ phase. The data were tested using one-way Repeated Measures Anova and Tukey's test (p<0.05). Results CO2 laser alone (2.00±0.39 µm) did not show any significantly preventive effect against enamel erosion when compared with the control group (2.41±1.20 µm). Fluoride treated enamel, associated (1.50±0.30 µm) or not (1.47±0.63 µm) with laser irradiation, significantly differed from the control. Conclusion The APF application decreased enamel wear; however, CO2 laser irradiation did not enhance fluoride ability to reduce enamel wear.
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Faculdade De Odontologia De Bauru - USP
2016
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oai:scielo:S1678-775720160003002232016-06-30CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challengeJORDÃO,Maísa CamilloFORTI,Gustavo ManzanoNAVARRO,Ricardo ScarparoFREITAS,Patrícia MoreiraHONÓRIO,Heitor MarquesRIOS,Daniela Dental enamel Tooth erosion Acidulated phosphate fluoride Lasers ABSTRACT Objective This in situ/ex vivo study investigated the effect of CO2 laser irradiation and acidulated phosphate fluoride gel (APF) application, separately and in combination, on enamel resistance to erosion. Material and Methods During 2 experimental 5-day crossover phases, 8 volunteers wore intraoral appliances containing bovine enamel blocks which were submitted to four groups: 1st phase - control, untreated and CO2 laser irradiation, 2nd phase - fluoride application and fluoride application before CO2 laser irradiation. Laser irradiation was performed at 10.6 µm wavelength, 5 µs pulse duration and 50 Hz frequency, with average power input and output of 2.3 W and 2.0 W, respectively (28.6 J/cm2). APF gel (1.23%F, pH 3.5) was applied on enamel surface with a microbrush and left on for 4 minutes. Then, the enamel blocks were fixed at the intraoral appliance level. The erosion was performed extraorally 4 times daily for 5 min in 150 mL of cola drink. Enamel loss was measured profilometrically after treatment and after the in situ phase. The data were tested using one-way Repeated Measures Anova and Tukey's test (p<0.05). Results CO2 laser alone (2.00±0.39 µm) did not show any significantly preventive effect against enamel erosion when compared with the control group (2.41±1.20 µm). Fluoride treated enamel, associated (1.50±0.30 µm) or not (1.47±0.63 µm) with laser irradiation, significantly differed from the control. Conclusion The APF application decreased enamel wear; however, CO2 laser irradiation did not enhance fluoride ability to reduce enamel wear.info:eu-repo/semantics/openAccessFaculdade De Odontologia De Bauru - USPJournal of Applied Oral Science v.24 n.3 20162016-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572016000300223en10.1590/1678-775720150399 |
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JORDÃO,Maísa Camillo FORTI,Gustavo Manzano NAVARRO,Ricardo Scarparo FREITAS,Patrícia Moreira HONÓRIO,Heitor Marques RIOS,Daniela |
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JORDÃO,Maísa Camillo FORTI,Gustavo Manzano NAVARRO,Ricardo Scarparo FREITAS,Patrícia Moreira HONÓRIO,Heitor Marques RIOS,Daniela CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
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JORDÃO,Maísa Camillo FORTI,Gustavo Manzano NAVARRO,Ricardo Scarparo FREITAS,Patrícia Moreira HONÓRIO,Heitor Marques RIOS,Daniela |
author_sort |
JORDÃO,Maísa Camillo |
title |
CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
title_short |
CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
title_full |
CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
title_fullStr |
CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
title_full_unstemmed |
CO2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
title_sort |
co2 laser and/or fluoride enamel treatment against in situ/ex vivo erosive challenge |
description |
ABSTRACT Objective This in situ/ex vivo study investigated the effect of CO2 laser irradiation and acidulated phosphate fluoride gel (APF) application, separately and in combination, on enamel resistance to erosion. Material and Methods During 2 experimental 5-day crossover phases, 8 volunteers wore intraoral appliances containing bovine enamel blocks which were submitted to four groups: 1st phase - control, untreated and CO2 laser irradiation, 2nd phase - fluoride application and fluoride application before CO2 laser irradiation. Laser irradiation was performed at 10.6 µm wavelength, 5 µs pulse duration and 50 Hz frequency, with average power input and output of 2.3 W and 2.0 W, respectively (28.6 J/cm2). APF gel (1.23%F, pH 3.5) was applied on enamel surface with a microbrush and left on for 4 minutes. Then, the enamel blocks were fixed at the intraoral appliance level. The erosion was performed extraorally 4 times daily for 5 min in 150 mL of cola drink. Enamel loss was measured profilometrically after treatment and after the in situ phase. The data were tested using one-way Repeated Measures Anova and Tukey's test (p<0.05). Results CO2 laser alone (2.00±0.39 µm) did not show any significantly preventive effect against enamel erosion when compared with the control group (2.41±1.20 µm). Fluoride treated enamel, associated (1.50±0.30 µm) or not (1.47±0.63 µm) with laser irradiation, significantly differed from the control. Conclusion The APF application decreased enamel wear; however, CO2 laser irradiation did not enhance fluoride ability to reduce enamel wear. |
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Faculdade De Odontologia De Bauru - USP |
publishDate |
2016 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572016000300223 |
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