Effect of a diode laser irradiation in root canals contamined with Enterococcus faecalis

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dc.contributor.authorRADAELLI, C.R. de M.pt_BR
dc.contributor.authorANTUNES, A.pt_BR
dc.contributor.authorCAI, S.pt_BR
dc.contributor.authorZEZELL, D.M.pt_BR
dc.contributor.authorGOUW-SOARES, S.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.accessioned2021-11-17T18:51:12Z
dc.date.available2021-11-17T18:51:12Z
dc.date.eventoJuly 31 - August 2, 2002pt_BR
dc.description.abstractHigh success rates were achieved in conventional endodontic treatment of vital pulp teelh. However, in non-vital pulp a decrease of success occurs due to difficulties to achieve a complete disinfection of root canal system. Some bacteria, such as Enterococcus faecalis, are frequently found in endodontic treatment failure due to their high resistance to the usual process of canal shaping and cleaning. The purpose of this work was to evaluate the effectiveness of a diode laser irradiation in bacterial reduction of contaminated canals as well as to analyze the effect of the laser irradiation associated with the use of calcium hydroxide paste. Eighty two root canals infected with Enterococcus faecalis suspension (1x10(6) CFU/ml) were irradiated with a high power diode laser (810nm, Opus 10- Sharplan - Israel) with two different parameters: 2.5W and 3 W (cw), using a 360 μm fiber at an angle of approximately 5 degrees to the dentine surface during 5 seconds in 5 applications, within 20 seconds intervals between. Temperature was monitored at apex using a K-pipe thermocouple. Maximum temperature was 7.45ºC. After these proceedings specimens were vortexed in peptone water and dilutions performed. Aliquots were plated on m-Enterococcus agar. Colonies Forming Units (CFU) of all groups was counted. Statistically the results showed a significant reduction of bacteria on all groups after laser irradiation. A high reduction rate was achieved: 98.5% immediately after laser irradiation; 48 hours after, the reduction rate was 96.73% and finally a 100% reduction was achieved with the association of laser irradiation and calcium hydroxide paste. These high rates of bacteria reduction were achieved using the parameter of 3W (cw), 4.24 KW/cm2. The use of high power diode laser 810nm is highly efficient and suitable to reduce Enterococcus faecalis in infected root canals.pt_BR
dc.format.extent48-48pt_BR
dc.identifier.citationRADAELLI, C.R. de M.; ANTUNES, A.; CAI, S.; ZEZELL, D.M.; GOUW-SOARES, S. Effect of a diode laser irradiation in root canals contamined with Enterococcus faecalis: “In vitro” study. 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. 48-48. Disponível em: http://repositorio.ipen.br/handle/123456789/32353.
dc.identifier.orcid0000-0001-7404-9606pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7404-9606
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/32353
dc.localAachen, Alemanhapt_BR
dc.local.eventoYokohama, Japanpt_BR
dc.publisherInternational Society for Laser in Dentistrypt_BR
dc.rightsopenAccesspt_BR
dc.subjectlaser radiation
dc.subjectdiode tubes
dc.subjectdentistry
dc.subjectteeth
dc.subjectbacterial diseases
dc.titleEffect of a diode laser irradiation in root canals contamined with Enterococcus faecalispt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorSHEILA CYNTHIA GOUW-SOARES
ipen.autorDENISE MARIA ZEZELL
ipen.autorANDREA ANTUNES PEREIRA
ipen.autorCLAUDIA A.R. DE M. RADAELLI
ipen.codigoautor6894
ipen.codigoautor693
ipen.codigoautor2744
ipen.codigoautor12576
ipen.contributor.ipenauthorSHEILA CYNTHIA GOUW-SOARES
ipen.contributor.ipenauthorDENISE MARIA ZEZELL
ipen.contributor.ipenauthorANDREA ANTUNES PEREIRA
ipen.contributor.ipenauthorCLAUDIA A.R. DE M. RADAELLI
ipen.date.recebimento21-11
ipen.event.datapadronizada2002pt_BR
ipen.identifier.ipendoc28121pt_BR
ipen.notas.internasAbstractpt_BR
ipen.subtitulo“In vitro” studypt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication499ca3ca-bc75-4638-891b-73f4fd43e682
relation.isAuthorOfPublicationa565f8ad-3432-4891-98c0-a587f497db21
relation.isAuthorOfPublication5740b800-d905-4fdb-afed-663c832ab41e
relation.isAuthorOfPublicationc78d89ab-f8bc-42a2-8323-410eea044820
relation.isAuthorOfPublication.latestForDiscoveryc78d89ab-f8bc-42a2-8323-410eea044820
sigepi.autor.atividadeGOUW-SOARES, S.:6894:-1:Npt_BR
sigepi.autor.atividadeZEZELL, D.M.:693:920:Npt_BR
sigepi.autor.atividadeANTUNES, A.:2744:-1:Npt_BR
sigepi.autor.atividadeRADAELLI, C.R. de M.:12576:-1:Spt_BR
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