Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand
Introduction: The aim of this in vitro study was to compare the elastic properties of the load-deflection ratio of orthodontic wires of different lot numbers and the same commercial brand. Methods: A total of 40 nickel-titanium (NiTi) wire segments (Morelli OrtodontiaTM - Sorocaba, SP, Brazil), 0....
| Autor principal: | NEVES, Murilo Gaby |
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| Outros Autores: | LIMA, Fabrício Viana Pereira, GURGEL, Júlio de Araújo, VERCELINO, Célia Regina Maio Pinzan, REZENDE, Fernanda Soares, BRANDÃO, Gustavo Antônio Martins |
| Grau: | Artigo |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2017
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| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/8707 |
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ir-2011-8707 |
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ir-2011-87072017-10-16T12:27:24Z Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand NEVES, Murilo Gaby LIMA, Fabrício Viana Pereira GURGEL, Júlio de Araújo VERCELINO, Célia Regina Maio Pinzan REZENDE, Fernanda Soares BRANDÃO, Gustavo Antônio Martins Ortodontia Elasticidade Fios ortodônticos Introduction: The aim of this in vitro study was to compare the elastic properties of the load-deflection ratio of orthodontic wires of different lot numbers and the same commercial brand. Methods: A total of 40 nickel-titanium (NiTi) wire segments (Morelli OrtodontiaTM - Sorocaba, SP, Brazil), 0.016-in in diameter were used. Groups were sorted according to lot numbers (lots 1, 2, 3 and 4). 28-mm length segments from the straight portion (ends) of archwires were used. Deflection tests were performed in an EMIC universal testing machine with 5-N load cell at 1 mm/minute speed. Force at deactivation was recorded at 0.5, 1, 2 and 3 mm deflection. Analysis of variance (ANOVA) was used to compare differences between group means. Results: When comparing the force of groups at the same deflection (3, 2 and 1 mm), during deactivation, no statistical differences were found. Conclusion: There are no changes in the elastic properties of different lots of the same commercial brand; thus, the use of different lots of the orthodontic wires used in this research does not compromise the final outcomes of the load-deflection ratio. Introdução: o objetivo deste estudo experimental in vitro foi comparar a as propriedades elásticas da relação carga/deflexão para fios de diferentes lotes de uma mesma marca comercial. Métodos: foram selecionados quarenta segmentos de arcos de níquel-titânio superelástico (NiTi) (Morelli Ortodontia, Sorocaba/SP, Brasil), com diâmetro de 0,016”. Os grupos foram ordenados de acordo com os lotes (lotes 1, 2, 3 e 4). Foram utilizados segmentos com 28mm de comprimento da parte reta (extremidades) dos arcos pré-contornados. Os testes de deflexão foram realizados em uma máquina universal de ensaios EMIC, com célula de carga de 5N e velocidade de 1mm/minuto. A força durante a desativação foi registrada nas deflexões de 0,5; 1; 2 e 3mm. O teste de Análise da Variância (ANOVA) foi utilizado para comparar diferenças entre as médias dos grupos. Resultados: na comparação de força dos lotes em um mesmo ponto de deflexão (3, 2 e 1mm), durante a desativação, não houve diferenças estatísticas. Conclusões: não ocorre alteração nas propriedades elásticas em diferentes lotes da mesma marca. Assim, o uso de diferentes lotes dos fios ortodônticos utilizados nesta pesquisa não comprometeu o resultado final da relação carga/deflexão 2017-06-16T12:53:07Z 2017-06-16T12:53:07Z 2016-02 Artigo de Periódico NEVES, Murilo Gaby et al. Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand. Dental Press Journal Orthodontics, Maringá, v. 21, n. 1, p. 42-46, jan/fev. 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512016000100042&lng=pt&nrm=iso>. Acesso em: 16 jun. 2017. <http://dx.doi.org/10.1590/2177-6709.21.1.042-046.oar>. 2177-6709 http://repositorio.ufpa.br/jspui/handle/2011/8707 por Dental Press Journal of Orthodontics Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA |
| institution |
Repositório Institucional - Universidade Federal do Pará |
| collection |
RI-UFPA |
| language |
por |
| topic |
Ortodontia Elasticidade Fios ortodônticos |
| spellingShingle |
Ortodontia Elasticidade Fios ortodônticos NEVES, Murilo Gaby Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| topic_facet |
Ortodontia Elasticidade Fios ortodônticos |
| description |
Introduction: The aim of this in vitro study was to compare the elastic properties of the load-deflection ratio of orthodontic
wires of different lot numbers and the same commercial brand. Methods: A total of 40 nickel-titanium (NiTi)
wire segments (Morelli OrtodontiaTM - Sorocaba, SP, Brazil), 0.016-in in diameter were used. Groups were sorted
according to lot numbers (lots 1, 2, 3 and 4). 28-mm length segments from the straight portion (ends) of archwires were
used. Deflection tests were performed in an EMIC universal testing machine with 5-N load cell at 1 mm/minute speed.
Force at deactivation was recorded at 0.5, 1, 2 and 3 mm deflection. Analysis of variance (ANOVA) was used to compare
differences between group means. Results: When comparing the force of groups at the same deflection (3, 2 and 1 mm),
during deactivation, no statistical differences were found. Conclusion: There are no changes in the elastic properties of
different lots of the same commercial brand; thus, the use of different lots of the orthodontic wires used in this research
does not compromise the final outcomes of the load-deflection ratio. |
| format |
Artigo |
| author |
NEVES, Murilo Gaby |
| author2 |
LIMA, Fabrício Viana Pereira GURGEL, Júlio de Araújo VERCELINO, Célia Regina Maio Pinzan REZENDE, Fernanda Soares BRANDÃO, Gustavo Antônio Martins |
| author2Str |
LIMA, Fabrício Viana Pereira GURGEL, Júlio de Araújo VERCELINO, Célia Regina Maio Pinzan REZENDE, Fernanda Soares BRANDÃO, Gustavo Antônio Martins |
| title |
Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| title_short |
Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| title_full |
Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| title_fullStr |
Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| title_full_unstemmed |
Deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| title_sort |
deflection test evaluation of different lots of the same nickel-titanium wire commercial brand |
| publisher |
Universidade Federal do Pará |
| publishDate |
2017 |
| url |
http://repositorio.ufpa.br/jspui/handle/2011/8707 |
| _version_ |
1832603874366586880 |
| score |
11.755432 |