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Conference Paper: Er:YAG-laser on fluoride uptake in silver diamine fluoride treated dentine

TitleEr:YAG-laser on fluoride uptake in silver diamine fluoride treated dentine
Authors
KeywordsCariology
Dentin
Fluoride
Lasers and SDF
Issue Date2013
PublisherSage Publications, Inc. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925
Citation
The 2nd Meeting of the International Association of Dental Research - Asia Pacific Region (IADR-APR), Bangkok, Thailand, 21-23 August 2013. In Journal of Dental Research, 2013, v. 92 n. Special Issue B: abstract no. 180632 How to Cite?
AbstractObjective: To evaluate fluoride uptake in 38% silver diamine fluoride (SDF) treated dentine with different Er:YAG laser (2940 nm) sub-ablative energy densities. Method: Two 8×8×3mm3 dentine slices were prepared from 2 sound human molars. Each slice was divided into 4 areas for application of 38% SDF as control (group 1), SDF application followed by Er:YAG irradiation at 0.6 J/cm3 (group 2), SDF application followed by Er:YAG irradiation at 0.8 J/cm3 (group 3) and SDF application followed by Er:YAG irradiation at 1.0 J/cm3(group 4). The laser irradiation was set at a 1,000 µs pulse, 10Hz repetition rate at 3mm spot size applied for 20 seconds without water. Fluoride uptake (weight %) of the 4 groups was assessed using Energy Dispersive X-ray Spectrometry (EDX) at 0, 5, 10, 15, 20µm depth from the SDF-treated dentine surface. Separate two-way mixed model analysis of variance (ANOVA) was used to compare mean fluoride weight % among four groups at different levels with sample as a random effect. Result: The fluoride content in weight % (±SD) in Group 2 was 22.6±7.3, 11.3±6.3, 9.2±4.3, 6.8±3.2 and 7.7±4.3 at 0, 5, 10, 15 and 20µm depth levels, respectively. Pairwise comparison of estimated marginal means with Bonferroni adjustment showed that these were significantly higher than those in group 1, 3 and 4 at all levels (p<0.05). Conclusion: Er:YAG laser sub-ablative energy densities at 0.6 J/cm3 gave the highest fluoride uptake effect on SDF treated dentine. The fluoride uptake was highest on the surface. This study is supported by the HKU Seed Funding Programme for Basic Research 201111159079.
DescriptionConference Theme: We are the Future
Poster Presentation
Session P1-L
Persistent Identifierhttp://hdl.handle.net/10722/192517
ISSN
2015 Impact Factor: 4.602
2015 SCImago Journal Rankings: 1.714

 

DC FieldValueLanguage
dc.contributor.authorTam, JLen_US
dc.contributor.authorIto, Len_US
dc.contributor.authorMei, Len_US
dc.contributor.authorChu, CHen_US
dc.date.accessioned2013-11-15T02:20:47Z-
dc.date.available2013-11-15T02:20:47Z-
dc.date.issued2013en_US
dc.identifier.citationThe 2nd Meeting of the International Association of Dental Research - Asia Pacific Region (IADR-APR), Bangkok, Thailand, 21-23 August 2013. In Journal of Dental Research, 2013, v. 92 n. Special Issue B: abstract no. 180632en_US
dc.identifier.issn0022-0345-
dc.identifier.urihttp://hdl.handle.net/10722/192517-
dc.descriptionConference Theme: We are the Future-
dc.descriptionPoster Presentation-
dc.descriptionSession P1-L-
dc.description.abstractObjective: To evaluate fluoride uptake in 38% silver diamine fluoride (SDF) treated dentine with different Er:YAG laser (2940 nm) sub-ablative energy densities. Method: Two 8×8×3mm3 dentine slices were prepared from 2 sound human molars. Each slice was divided into 4 areas for application of 38% SDF as control (group 1), SDF application followed by Er:YAG irradiation at 0.6 J/cm3 (group 2), SDF application followed by Er:YAG irradiation at 0.8 J/cm3 (group 3) and SDF application followed by Er:YAG irradiation at 1.0 J/cm3(group 4). The laser irradiation was set at a 1,000 µs pulse, 10Hz repetition rate at 3mm spot size applied for 20 seconds without water. Fluoride uptake (weight %) of the 4 groups was assessed using Energy Dispersive X-ray Spectrometry (EDX) at 0, 5, 10, 15, 20µm depth from the SDF-treated dentine surface. Separate two-way mixed model analysis of variance (ANOVA) was used to compare mean fluoride weight % among four groups at different levels with sample as a random effect. Result: The fluoride content in weight % (±SD) in Group 2 was 22.6±7.3, 11.3±6.3, 9.2±4.3, 6.8±3.2 and 7.7±4.3 at 0, 5, 10, 15 and 20µm depth levels, respectively. Pairwise comparison of estimated marginal means with Bonferroni adjustment showed that these were significantly higher than those in group 1, 3 and 4 at all levels (p<0.05). Conclusion: Er:YAG laser sub-ablative energy densities at 0.6 J/cm3 gave the highest fluoride uptake effect on SDF treated dentine. The fluoride uptake was highest on the surface. This study is supported by the HKU Seed Funding Programme for Basic Research 201111159079.-
dc.languageengen_US
dc.publisherSage Publications, Inc. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925-
dc.relation.ispartofJournal of Dental Researchen_US
dc.rightsJournal of Dental Research. Copyright © Sage Publications, Inc.-
dc.subjectCariology-
dc.subjectDentin-
dc.subjectFluoride-
dc.subjectLasers and SDF-
dc.titleEr:YAG-laser on fluoride uptake in silver diamine fluoride treated dentineen_US
dc.typeConference_Paperen_US
dc.identifier.emailMei, L: mei1123@hku.hken_US
dc.identifier.emailChu, CH: chchu@hku.hken_US
dc.identifier.authorityMei, L=rp01840en_US
dc.identifier.authorityChu, CH=rp00022en_US
dc.identifier.hkuros226772en_US
dc.identifier.volume92en_US
dc.identifier.issueSpecial Issue B: abstract no. 180632-
dc.publisher.placeUnited States-

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