Infrared absorption bands characterization of dentin tissue when irradiated by erbium laser

Página do item simplificado
dc.contributor.authorZEZELL, D.M.pt_BR
dc.contributor.authorBACHMANN, L.pt_BR
dc.contributor.authorDIEBOLDER, R.pt_BR
dc.contributor.authorHIBST, R.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONGRESS ON LASERS IN DENTISTRY, 8th; ANNUAL MEETING OF THE JAPANESE SOCIETY FOR LASER DENTISTRY, 14thpt_BR
dc.date.accessioned2021-11-17T18:34:11Z
dc.date.available2021-11-17T18:34:11Z
dc.date.eventoJuly 31 - August 2, 2002pt_BR
dc.description.abstractThe erbium laser radiation is highly absorbed by water molecules present in hard tissues. Erbium laser irradiation effects can be classified in two different regimens: ablative, which produces material removal or sub-ablative, that produces a controlled heated process in the irradiated and adjacent regions. For the Er:YAG laser the ablative threshold is very low, around 1.5J/cm2. When dentin is irradiated bellow threshold, chemical and physical changes can occur. The objective of this work is to identify the infrared absorption changes at dentin tissue induced by the Er:YAG laser irradiation al 2.94 μm with sub-ablative energy densities. In this work it were used energy densities between 0.365 J/cm2 and 1.94 J/cm2 to irradiate 0.5mm slices of bovine dentin. For the infrared analysis a Fourier Transform Infrared spectrometer was used. The studied region was between 4000 cm-1 and 400cm-1 (2.5μm and 25μm). After the laser irradiation, two main changes were observed in the analyzed spectral region: loss of water and alteration in the structure of organic matrix. These alterations can be identified by intensity decrease of the water band between 3800cm-1 and 2800cm-1 and in those bands between 1400cm-1 and 1100cm-1. Only a partial reversion of the water band pattern was observed after 24 hours of hydration, suggesting that erbium laser produces an irreversible alteration in the structure of the organic matrix when irradiated with energy densities bellow the ablation threshold.pt_BR
dc.format.extent57-57pt_BR
dc.identifier.citationZEZELL, D.M.; BACHMANN, L.; DIEBOLDER, R.; HIBST, R. Infrared absorption bands characterization of dentin tissue when irradiated by erbium laser. In: INTERNATIONAL CONGRESS ON LASERS IN DENTISTRY, 8th; ANNUAL MEETING OF THE JAPANESE SOCIETY FOR LASER DENTISTRY, 14th, July 31 - August 2, 2002, Yokohama, Japan. <b>Abstract...</b> Aachen, Alemanha: International Society for Laser in Dentistry, 2002. p. 57-57. Disponível em: http://repositorio.ipen.br/handle/123456789/32351.
dc.identifier.orcid0000-0001-7404-9606pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7404-9606
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/32351
dc.localAachen, Alemanhapt_BR
dc.local.eventoYokohama, Japanpt_BR
dc.publisherInternational Society for Laser in Dentistrypt_BR
dc.rightsopenAccesspt_BR
dc.subjectdentistry
dc.subjectdentin
dc.subjecterbium
dc.subjectlasers
dc.subjectinfrared spectra
dc.subjectabsorption
dc.titleInfrared absorption bands characterization of dentin tissue when irradiated by erbium laserpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorLUCIANO BACHMANN
ipen.autorDENISE MARIA ZEZELL
ipen.codigoautor2411
ipen.codigoautor693
ipen.contributor.ipenauthorLUCIANO BACHMANN
ipen.contributor.ipenauthorDENISE MARIA ZEZELL
ipen.date.recebimento21-11
ipen.event.datapadronizada2002pt_BR
ipen.identifier.ipendoc28119pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication05023822-0bca-4883-9459-741a0d6befa3
relation.isAuthorOfPublicationa565f8ad-3432-4891-98c0-a587f497db21
relation.isAuthorOfPublication.latestForDiscoverya565f8ad-3432-4891-98c0-a587f497db21
sigepi.autor.atividadeBACHMANN, L.:2411:920:Npt_BR
sigepi.autor.atividadeZEZELL, D.M.:693:920:Spt_BR
Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
28119.pdf
Tamanho:
794.29 KB
Formato:
Adobe Portable Document Format
Descrição:
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar
Coleções
Eventos - Resumos