Propriedades mecânicas e avaliação microscópica de fios ortodônticos de niti revestidos por polímeros
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2015-03-24
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Universidade Federal de Goiás
Resumo
The objective of the study was to analyze the mechanical properties and
analyze the surface of the wires coated polymers.
Methods: We used the pre-contoured wires study with dimension of 0.014 "Nickel-
Titanium (NiTi) brands: Tecident orthodontic equipment Ltda (São Carlos, São Paulo
Brazil), TP Orthodontics (Indiana, USA), Trianeiro ( Rio Claro, São Paulo Brazil) and
NiTi wire Morelli (Sorocaba, Sao Paulo Brazil) as a control group. The yarns were
randomly divided into 11 groups (n = 6) .There were carried deflection test. The yarns
were immersed in artificial saliva for a period of 30 to 60 days to corrode. After the wire
corrosion were also submitted for the analysis of Scanning Electron Microscopy (SEM).
Results: We used the ANOVA analysis of variance, which were statistically significant
differences between the tested wire and the controle.Foram group observed
imperfections on the surfaces of all the wire and the wire TP Orthodontics showed the
greatest changes.
Conclusions: The polymeric coating appears to be responsible for the mechanical
surface change and the NiTi wires.
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FERREIRA, G. C. Propriedades mecânicas e avaliação microscópica de fios ortodônticos de niti revestidos por polímeros. 2015. 50 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2015.