Metallographic analysis of the internal microstructure of orthodontic mini-implants

Detalhes bibliográficos
Autor(a) principal: Cotrim-Ferreira,Flávio Augusto
Data de Publicação: 2010
Outros Autores: Quaglio,Camila Leite, Peralta,Rubén Patricio Vásquez, Carvalho,Paulo Eduardo Guedes, Siqueira,Danilo Furquim
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242010000400011
Resumo: Effective orthodontic anchorage may be obtained by miniimplants inserted into the maxillary bones. However, the risk of miniimplant failure is one of the most important issues, especially the rupture of its structure referred to as fracture, mainly due to metal deficiencies. This study analyzed the internal microstructure of orthodontic mini-implants, ascertaining the composition of the metal to detect possible discontinuities from the surface to the core of the screws. Eighteen samples of mini-implants, of 3 different brands, were obtained. The samples were cold-embedded in methyl methacrylate polymer, and were sectioned both longitudinally (3 samples of each brand) and transversely (the other 3 screws of each brand). After preparation, the samples were observed using a light microscope at up to 2,000 x magnification. The results showed that the mini-implants thus analyzed were composed of an Alpha-Beta globular phase of titanium alloy, patterns A1 and A9 (in accordance with the "Technical Committee of European Titanium Producers"). The miniimplants did not present any defects such as bubbles, imperfections or fissures, in either longitudinal or transverse sections, in their internal microstructure. All samples met the requirements of international norms. Orthodontists must be aware of the metal composition and internal microstructure of mini-implants, to decrease the risk of fractures.
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spelling Metallographic analysis of the internal microstructure of orthodontic mini-implantsOrthodonticsDental ImplantationOrthodontic Anchorage ProceduresEffective orthodontic anchorage may be obtained by miniimplants inserted into the maxillary bones. However, the risk of miniimplant failure is one of the most important issues, especially the rupture of its structure referred to as fracture, mainly due to metal deficiencies. This study analyzed the internal microstructure of orthodontic mini-implants, ascertaining the composition of the metal to detect possible discontinuities from the surface to the core of the screws. Eighteen samples of mini-implants, of 3 different brands, were obtained. The samples were cold-embedded in methyl methacrylate polymer, and were sectioned both longitudinally (3 samples of each brand) and transversely (the other 3 screws of each brand). After preparation, the samples were observed using a light microscope at up to 2,000 x magnification. The results showed that the mini-implants thus analyzed were composed of an Alpha-Beta globular phase of titanium alloy, patterns A1 and A9 (in accordance with the "Technical Committee of European Titanium Producers"). The miniimplants did not present any defects such as bubbles, imperfections or fissures, in either longitudinal or transverse sections, in their internal microstructure. All samples met the requirements of international norms. Orthodontists must be aware of the metal composition and internal microstructure of mini-implants, to decrease the risk of fractures.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2010-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242010000400011Brazilian Oral Research v.24 n.4 2010reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242010000400011info:eu-repo/semantics/openAccessCotrim-Ferreira,Flávio AugustoQuaglio,Camila LeitePeralta,Rubén Patricio VásquezCarvalho,Paulo Eduardo GuedesSiqueira,Danilo Furquimeng2010-12-16T00:00:00Zoai:scielo:S1806-83242010000400011Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2010-12-16T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Metallographic analysis of the internal microstructure of orthodontic mini-implants
title Metallographic analysis of the internal microstructure of orthodontic mini-implants
spellingShingle Metallographic analysis of the internal microstructure of orthodontic mini-implants
Cotrim-Ferreira,Flávio Augusto
Orthodontics
Dental Implantation
Orthodontic Anchorage Procedures
title_short Metallographic analysis of the internal microstructure of orthodontic mini-implants
title_full Metallographic analysis of the internal microstructure of orthodontic mini-implants
title_fullStr Metallographic analysis of the internal microstructure of orthodontic mini-implants
title_full_unstemmed Metallographic analysis of the internal microstructure of orthodontic mini-implants
title_sort Metallographic analysis of the internal microstructure of orthodontic mini-implants
author Cotrim-Ferreira,Flávio Augusto
author_facet Cotrim-Ferreira,Flávio Augusto
Quaglio,Camila Leite
Peralta,Rubén Patricio Vásquez
Carvalho,Paulo Eduardo Guedes
Siqueira,Danilo Furquim
author_role author
author2 Quaglio,Camila Leite
Peralta,Rubén Patricio Vásquez
Carvalho,Paulo Eduardo Guedes
Siqueira,Danilo Furquim
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Cotrim-Ferreira,Flávio Augusto
Quaglio,Camila Leite
Peralta,Rubén Patricio Vásquez
Carvalho,Paulo Eduardo Guedes
Siqueira,Danilo Furquim
dc.subject.por.fl_str_mv Orthodontics
Dental Implantation
Orthodontic Anchorage Procedures
topic Orthodontics
Dental Implantation
Orthodontic Anchorage Procedures
description Effective orthodontic anchorage may be obtained by miniimplants inserted into the maxillary bones. However, the risk of miniimplant failure is one of the most important issues, especially the rupture of its structure referred to as fracture, mainly due to metal deficiencies. This study analyzed the internal microstructure of orthodontic mini-implants, ascertaining the composition of the metal to detect possible discontinuities from the surface to the core of the screws. Eighteen samples of mini-implants, of 3 different brands, were obtained. The samples were cold-embedded in methyl methacrylate polymer, and were sectioned both longitudinally (3 samples of each brand) and transversely (the other 3 screws of each brand). After preparation, the samples were observed using a light microscope at up to 2,000 x magnification. The results showed that the mini-implants thus analyzed were composed of an Alpha-Beta globular phase of titanium alloy, patterns A1 and A9 (in accordance with the "Technical Committee of European Titanium Producers"). The miniimplants did not present any defects such as bubbles, imperfections or fissures, in either longitudinal or transverse sections, in their internal microstructure. All samples met the requirements of international norms. Orthodontists must be aware of the metal composition and internal microstructure of mini-implants, to decrease the risk of fractures.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242010000400011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242010000400011
dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 10.1590/S1806-83242010000400011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.source.none.fl_str_mv Brazilian Oral Research v.24 n.4 2010
reponame:Brazilian Oral Research
instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron:SBPQO
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reponame_str Brazilian Oral Research
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repository.name.fl_str_mv Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
repository.mail.fl_str_mv pob@edu.usp.br||bor@sbpqo.org.br
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