Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/108371 |
Resumo: | Objective: The purpose of this study was to assess the systemic effects of low-level laser therapy (LLLT) on thyroid gland function and, consequently, calcium regulation – as measured by serum triiodothyronine (T3), thyroxine (T4), and free calcium levels – when administered after dental implant placement in a rabbit model. Background data: Protocols for the use of laser therapy in several clinical procedures are currently under investigation, as not all of the actions and systemic effects of laser irradiation have been clearly established. Materials and methods: Forty male adult New Zealand rabbits were distributed across five groups of eight animals each: two control groups (C-I and C-II) of unirradiated animals, and three experimental groups (E-5, E- 10, and E-20), each exposed to a distinct dose of gallium-aluminum-arsenide (GaAlAs) laser [λ = 830 nm2, 50 mW, continuous wave (CW)] every 48 h for a total of seven sessions. The total dose per session was 5 J/cm2 in E-5, 10 J/cm² in E-10, and 20 J/cm² in E-20. Animals in C-II and all experimental groups underwent surgical extraction of the mandibular left incisor followed by immediate placement of an osseointegrated implant (Nanotite® , Biomet 3iTM) into the socket. Animals in group C-I served as an absolute control for T3, T4, and calcium measurements. The level of significance was set at 5% ( p ≤ 0.05). Results: ANOVA with Tukey’s posthoc test revealed significant differences in T3 and calcium levels among experimental groups, as well as significant within-group differences in T3, T4, and calcium levels over time. Conclusions: Although not reaching abnormal values, LLLT applied to the mandible influenced thyroid function in this model |
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Weber, João Batista BlessmannMayer, LucianoCenci, Rodrigo AlbertoBaraldi, Carlos Eduardo EspindolaPonzoni, DeiseOliveira, Marilia Gerhardt de2014-12-17T02:14:06Z20141549-5418http://hdl.handle.net/10183/108371000940998Objective: The purpose of this study was to assess the systemic effects of low-level laser therapy (LLLT) on thyroid gland function and, consequently, calcium regulation – as measured by serum triiodothyronine (T3), thyroxine (T4), and free calcium levels – when administered after dental implant placement in a rabbit model. Background data: Protocols for the use of laser therapy in several clinical procedures are currently under investigation, as not all of the actions and systemic effects of laser irradiation have been clearly established. Materials and methods: Forty male adult New Zealand rabbits were distributed across five groups of eight animals each: two control groups (C-I and C-II) of unirradiated animals, and three experimental groups (E-5, E- 10, and E-20), each exposed to a distinct dose of gallium-aluminum-arsenide (GaAlAs) laser [λ = 830 nm2, 50 mW, continuous wave (CW)] every 48 h for a total of seven sessions. The total dose per session was 5 J/cm2 in E-5, 10 J/cm² in E-10, and 20 J/cm² in E-20. Animals in C-II and all experimental groups underwent surgical extraction of the mandibular left incisor followed by immediate placement of an osseointegrated implant (Nanotite® , Biomet 3iTM) into the socket. Animals in group C-I served as an absolute control for T3, T4, and calcium measurements. The level of significance was set at 5% ( p ≤ 0.05). Results: ANOVA with Tukey’s posthoc test revealed significant differences in T3 and calcium levels among experimental groups, as well as significant within-group differences in T3, T4, and calcium levels over time. Conclusions: Although not reaching abnormal values, LLLT applied to the mandible influenced thyroid function in this modelapplication/pdfengPhotomedicine and laser surgery. Larchmont, NY. Vol. 32, no. 11 (Nov. 2014), p. 1-6Laser na odontologiaImplantacao : DentesGlândula tireóideHormônios tireóideosEffect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit modelEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000940998.pdf000940998.pdfTexto completo (inglês)application/pdf175241http://www.lume.ufrgs.br/bitstream/10183/108371/1/000940998.pdffc9944f4397707ecb40b594f20b36799MD51TEXT000940998.pdf.txt000940998.pdf.txtExtracted Texttext/plain32014http://www.lume.ufrgs.br/bitstream/10183/108371/2/000940998.pdf.txte30513a8b1c6de762f48abe0368f5861MD52THUMBNAIL000940998.pdf.jpg000940998.pdf.jpgGenerated Thumbnailimage/jpeg1992http://www.lume.ufrgs.br/bitstream/10183/108371/3/000940998.pdf.jpg93ac2852ab7da994e08bb53b127621ecMD5310183/1083712018-10-22 09:18:01.92oai:www.lume.ufrgs.br:10183/108371Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-22T12:18:01Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
title |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
spellingShingle |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model Weber, João Batista Blessmann Laser na odontologia Implantacao : Dentes Glândula tireóide Hormônios tireóideos |
title_short |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
title_full |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
title_fullStr |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
title_full_unstemmed |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
title_sort |
Effect of three different protocols of low-level laser therapy on thyroid hormone production after dental implant placement in an experimental rabbit model |
author |
Weber, João Batista Blessmann |
author_facet |
Weber, João Batista Blessmann Mayer, Luciano Cenci, Rodrigo Alberto Baraldi, Carlos Eduardo Espindola Ponzoni, Deise Oliveira, Marilia Gerhardt de |
author_role |
author |
author2 |
Mayer, Luciano Cenci, Rodrigo Alberto Baraldi, Carlos Eduardo Espindola Ponzoni, Deise Oliveira, Marilia Gerhardt de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Weber, João Batista Blessmann Mayer, Luciano Cenci, Rodrigo Alberto Baraldi, Carlos Eduardo Espindola Ponzoni, Deise Oliveira, Marilia Gerhardt de |
dc.subject.por.fl_str_mv |
Laser na odontologia Implantacao : Dentes Glândula tireóide Hormônios tireóideos |
topic |
Laser na odontologia Implantacao : Dentes Glândula tireóide Hormônios tireóideos |
description |
Objective: The purpose of this study was to assess the systemic effects of low-level laser therapy (LLLT) on thyroid gland function and, consequently, calcium regulation – as measured by serum triiodothyronine (T3), thyroxine (T4), and free calcium levels – when administered after dental implant placement in a rabbit model. Background data: Protocols for the use of laser therapy in several clinical procedures are currently under investigation, as not all of the actions and systemic effects of laser irradiation have been clearly established. Materials and methods: Forty male adult New Zealand rabbits were distributed across five groups of eight animals each: two control groups (C-I and C-II) of unirradiated animals, and three experimental groups (E-5, E- 10, and E-20), each exposed to a distinct dose of gallium-aluminum-arsenide (GaAlAs) laser [λ = 830 nm2, 50 mW, continuous wave (CW)] every 48 h for a total of seven sessions. The total dose per session was 5 J/cm2 in E-5, 10 J/cm² in E-10, and 20 J/cm² in E-20. Animals in C-II and all experimental groups underwent surgical extraction of the mandibular left incisor followed by immediate placement of an osseointegrated implant (Nanotite® , Biomet 3iTM) into the socket. Animals in group C-I served as an absolute control for T3, T4, and calcium measurements. The level of significance was set at 5% ( p ≤ 0.05). Results: ANOVA with Tukey’s posthoc test revealed significant differences in T3 and calcium levels among experimental groups, as well as significant within-group differences in T3, T4, and calcium levels over time. Conclusions: Although not reaching abnormal values, LLLT applied to the mandible influenced thyroid function in this model |
publishDate |
2014 |
dc.date.accessioned.fl_str_mv |
2014-12-17T02:14:06Z |
dc.date.issued.fl_str_mv |
2014 |
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dc.type.status.fl_str_mv |
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dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/108371 |
dc.identifier.issn.pt_BR.fl_str_mv |
1549-5418 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000940998 |
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http://hdl.handle.net/10183/108371 |
dc.language.iso.fl_str_mv |
eng |
language |
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dc.relation.ispartof.pt_BR.fl_str_mv |
Photomedicine and laser surgery. Larchmont, NY. Vol. 32, no. 11 (Nov. 2014), p. 1-6 |
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openAccess |
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