Artigo

Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices

OBJECTIVE: To evaluate the in vitro ionic degradation and slot base corrosion of metallic brackets subjected to brushing with dentifrices, through analysis of chemical composition by Energy Dispersive Spectroscopy (EDS) and qualitative analysis by Scanning Electron Microscopy (SEM). METHODS: Thirty...

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Autor principal: BRANDÃO, Gustavo Antônio Martins
Outros Autores: SIMAS, Rafael Menezes, ALMEIDA, Leandro Moreira de, SILVA, Juliana Melo da, MENEGHIM, Marcelo de Castro, PEREIRA, Antonio Carlos, ALMEIDA, Haroldo Amorim de, BRANDÃO, Ana Maria Martins
Grau: Artigo
Idioma: eng
Publicado em: 2015
Assuntos:
Ortodontia
Braquetes ortodônticos
Microscopia eletrônica de varredura
Corrosão dentária
Espectroscopia de energia dispersiva
Acesso em linha: http://repositorio.ufpa.br/jspui/handle/2011/6640
id ir-2011-6640
recordtype dspace
spelling ir-2011-66402018-02-15T18:19:22Z Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices BRANDÃO, Gustavo Antônio Martins SIMAS, Rafael Menezes ALMEIDA, Leandro Moreira de SILVA, Juliana Melo da MENEGHIM, Marcelo de Castro PEREIRA, Antonio Carlos ALMEIDA, Haroldo Amorim de BRANDÃO, Ana Maria Martins Ortodontia Braquetes ortodônticos Microscopia eletrônica de varredura Corrosão dentária Espectroscopia de energia dispersiva OBJECTIVE: To evaluate the in vitro ionic degradation and slot base corrosion of metallic brackets subjected to brushing with dentifrices, through analysis of chemical composition by Energy Dispersive Spectroscopy (EDS) and qualitative analysis by Scanning Electron Microscopy (SEM). METHODS: Thirty eight brackets were selected and randomly divided into four experimental groups (n = 7). Two groups (n = 5) worked as positive and negative controls. Simulated orthodontic braces were assembled using 0.019 x 0.025-in stainless steel wires and elastomeric rings. The groups were divided according to surface treatment: G1 (Máxima Proteção Anticáries®); G2 (Total 12®); G3 (Sensitive®); G4 (Branqueador®); Positive control (artificial saliva) and Negative control (no treatment). Twenty eight brushing cycles were performed and evaluations were made before (T0) and after (T1) experiment. RESULTS: The Wilcoxon test showed no difference in ionic concentrations of titanium (Ti), chromium (Cr), iron (Fe) and nickel (Ni) between groups. G2 presented significant reduction (p < 0.05) in the concentration of aluminium ion (Al). Groups G3 and G4 presented significant increase (p < 0.05) in the concentration of aluminium ion. The SEM analysis showed increased characteristics indicative of corrosion on groups G2, G3 and G4. CONCLUSION: The EDS analysis revealed that control groups and G1 did not suffer alterations on the chemical composition. G2 presented degradation in the amount of Al ion. G3 and G4 suffered increase in the concentration of Al. The immersion in artificial saliva and the dentifrice Máxima Proteção Anticáries® did not alter the surface polishing. The dentifrices Total 12®, Sensitive® and Branqueador® altered the surface polishing. OBJETIVO: avaliar in vitro a degradação iônica e corrosão do fundo do slot de braquetes metálicos submetidos à escovação com dentifrícios, realizando análises da composição química por Espectroscopia de Energia Dispersiva (EDS) e qualitativa por Microscopia Eletrônica de Varredura (MEV). MÉTODOS: foram selecionados 38 braquetes divididos aleatoriamente em quatro grupos experimentais (n = 7). Dois grupos (n = 5) funcionaram como controles positivo e negativo. Aparelhos ortodônticos simulados foram confeccionados com fios de aço inoxidável 0,019" x 0,025" e anéis elastoméricos. Os grupos foram divididos de acordo com o tratamento de superfície: G1 (Máxima Proteção Anticáries®); G2 (Total 12®); G3 (Sensitive®); G4 (Branqueador®); Controle Positivo (saliva artificial) e Controle Negativo (sem tratamento). Foram realizados 28 ciclos de escovação e avaliações antes (T0) e após (T1) o experimento. RESULTADOS: o teste de Wilcoxon indicou não existir diferença nas concentrações iônicas de titânio (Ti), cromo (Cr), ferro (Fe) e níquel (Ni) entre os grupos. O grupo G2 apresentou redução significativa (p < 0,05) na concentração do íon alumínio (Al) e os grupos G3 e G4 apresentaram aumento significativo (p < 0,05) nas concentrações do íon alumínio. A análise em MEV mostrou aumento nas características indicativas de corrosão dos grupos G2, G3 e G4. CONCLUSÃO: a análise por EDS revelou que os grupos controle e G1 não sofreram alterações na composição química. O grupo G2 apresentou degradação na quantidade de íons Al, e G3 e G4 sofreram aumento na concentração de Al. A imersão em saliva artificial e o dentifrício Máxima Proteção Anticáries® não alteraram o polimento de superfície. Os dentifrícios Total 12®, Sensitive® e Branqueador® alteraram o polimento de superfície. 2015-05-11T13:11:46Z 2015-05-11T13:11:46Z 2013-02 Artigo de Periódico BRANDAO, Gustavo Antônio Martins et al. Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices. Dental Press Journal of Orthodontics, Maringá, v. 18, n. 1, p. 86-93, jan./fev. 2013. Disponível em: <http://www.scielo.br/pdf/dpjo/v18n1/19.pdf>. Acesso em: 07 maio 2015. <http://dx.doi.org/10.1590/S2176-94512013000100019>. 2176-9451 http://repositorio.ufpa.br/jspui/handle/2011/6640 eng Acesso Aberto application/pdf
institution Repositório Institucional - Universidade Federal do Pará
collection RI-UFPA
language eng
topic Ortodontia
Braquetes ortodônticos
Microscopia eletrônica de varredura
Corrosão dentária
Espectroscopia de energia dispersiva
spellingShingle Ortodontia
Braquetes ortodônticos
Microscopia eletrônica de varredura
Corrosão dentária
Espectroscopia de energia dispersiva
BRANDÃO, Gustavo Antônio Martins
Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
topic_facet Ortodontia
Braquetes ortodônticos
Microscopia eletrônica de varredura
Corrosão dentária
Espectroscopia de energia dispersiva
description OBJECTIVE: To evaluate the in vitro ionic degradation and slot base corrosion of metallic brackets subjected to brushing with dentifrices, through analysis of chemical composition by Energy Dispersive Spectroscopy (EDS) and qualitative analysis by Scanning Electron Microscopy (SEM). METHODS: Thirty eight brackets were selected and randomly divided into four experimental groups (n = 7). Two groups (n = 5) worked as positive and negative controls. Simulated orthodontic braces were assembled using 0.019 x 0.025-in stainless steel wires and elastomeric rings. The groups were divided according to surface treatment: G1 (Máxima Proteção Anticáries®); G2 (Total 12®); G3 (Sensitive®); G4 (Branqueador®); Positive control (artificial saliva) and Negative control (no treatment). Twenty eight brushing cycles were performed and evaluations were made before (T0) and after (T1) experiment. RESULTS: The Wilcoxon test showed no difference in ionic concentrations of titanium (Ti), chromium (Cr), iron (Fe) and nickel (Ni) between groups. G2 presented significant reduction (p < 0.05) in the concentration of aluminium ion (Al). Groups G3 and G4 presented significant increase (p < 0.05) in the concentration of aluminium ion. The SEM analysis showed increased characteristics indicative of corrosion on groups G2, G3 and G4. CONCLUSION: The EDS analysis revealed that control groups and G1 did not suffer alterations on the chemical composition. G2 presented degradation in the amount of Al ion. G3 and G4 suffered increase in the concentration of Al. The immersion in artificial saliva and the dentifrice Máxima Proteção Anticáries® did not alter the surface polishing. The dentifrices Total 12®, Sensitive® and Branqueador® altered the surface polishing.
format Artigo
author BRANDÃO, Gustavo Antônio Martins
author2 SIMAS, Rafael Menezes
ALMEIDA, Leandro Moreira de
SILVA, Juliana Melo da
MENEGHIM, Marcelo de Castro
PEREIRA, Antonio Carlos
ALMEIDA, Haroldo Amorim de
BRANDÃO, Ana Maria Martins
author2Str SIMAS, Rafael Menezes
ALMEIDA, Leandro Moreira de
SILVA, Juliana Melo da
MENEGHIM, Marcelo de Castro
PEREIRA, Antonio Carlos
ALMEIDA, Haroldo Amorim de
BRANDÃO, Ana Maria Martins
title Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
title_short Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
title_full Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
title_fullStr Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
title_full_unstemmed Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
title_sort evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices
publishDate 2015
url http://repositorio.ufpa.br/jspui/handle/2011/6640
_version_ 1832602766796652544
score 11.755432

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