Detalhes bibliográficos
| Ano de defesa: |
2006 |
| Autor(a) principal: |
Portero, Priscila Paiva
 |
| Orientador(a): |
Gomes, Osnara Maria Mongruel
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| Banca de defesa: |
Gomes, João Carlos
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| Tipo de documento: |
Dissertação
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| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
UNIVERSIDADE ESTADUAL DE PONTA GROSSA
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| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Odontologia
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| Departamento: |
Clinica Integrada, Dentística Restauradora e Periodontia
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| País: |
BR
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| 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.uepg.br/jspui/handle/prefix/1774
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Resumo: |
The present study aims to evaluate in vitro the flexural strength of the direct composite resin (FiltekTM Z-250 – 3M/ESPE) and of the second generation laboratory resin (CeseaDST II – Kuraray) either associated or not to glass fibers (Fibrex-coronal – Angelus), varying the source of photoactivating (L.E.Demetron 1 – Kerr e Strobolux – EDG). Fifty-six samples were made inside a biparted metalic matrix, 13.0 mm in diameter X 2.4 mm thick, divided into 8 study groups (n=7): GI – Resin FiltekTM Z-250/ Fibreless/ LED; GII – Resin FiltekTM Z-250/ Fibreless/ Strobolux; GIII - Resin FiltekTM Z-250/ Fibrex-coronal/ LED; GIV - Resin FiltekTM Z-250/ Fibrex-coronal/ Strobolux; GV – Resin CeseaDST II/ Fibreless / LED; GVI - Resin CeseaDST II/ Fibreless / Strobolux; GVII - Resin CeseaDST II/ Fibrexcoronal/ LED; GVIII - Resin CeseaDST II/ Fibrex-coronal/ Strobolux. The samples were under the test of biaxial flexural strength in the Kratos equipment, with speed of 1 ± 0.5 mm/min and load cell of 500 Kgf. The flexural strength values were submitted to the Tukey test (P=0,01). The rate of the results in MPa were: GI – 187.91 ± 32.78; GII – 196.76 ± 31.15; GIII – 208.27 ± 18.79; GIV – 218.02 ± 15.76; GV – 101.72 ± 11.25; GVI – 103.05 ± 9.56; GVII – 164.76 ± 12.54 e GVIII – 176.75 ± 47.03. The conclusion is that the analyzed composites showed different behaviors in vitro; the direct composite FiltekTM Z-250 showed higher values of flexural strength in all the studied groups; the type of light source did not interfere in the flexural strength of the evaluated composites; reinforcement with fibers increased the flexural strength both evaluated composites, however only for the indirect composite CeseaDST II that increase was significant. |
