Detalhes bibliográficos
| Ano de defesa: |
2013 |
| Autor(a) principal: |
Pompeo, Daniela Daunfenback
 |
| Orientador(a): |
Paranhos, Luiz Renato
|
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
IASCJ - Universidade Sagrado Coração
|
| Programa de Pós-Graduação: |
Biologia Oral
|
| Departamento: |
Ciências da Saúde e Biológicas
|
| País: |
BR
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://tede2.usc.br:8080/jspui/handle/tede/219
|
Resumo: |
The purpose of this study was to evaluate the shear bond strength of resin/bracket interface of new and recycled brackets, treated in different ways. A total of 45 orthodontic brackets were randomly divided into three groups: 1) new brackets, 2) brackets recycled by etching 10% hydrofluoric acid for 60 seconds and 3) brackets sandblasted with aluminum oxide. The specimens were subjected to shear bond strength test in a universal testing machine Instron Model 4444. Statistical analysis was carried out with analysis of variance (ANOVA) and Tukey Test (p <0.01). The average shear bond strength was 10.54 (± 2.03) MPa, 4,17 (± 1,05) MPa, 8,83 (± 1,21) MPa for Group 1, 2 and 3, respectively. The differences between the groups were statistically significant (p <0.01). Groups 1 and 3 obtained values of shear strength above the minimum desirable for a good clinical performance. Sandblasting method of aluminum oxide is effective to recycle orthodontic brackets, however, the recycling technique by etching 10% hydrofluoric acid for 60 seconds is not efficient to be used clinically. |
