Valandro Luiz Felipe, Ozcan Mutlu, de Melo Renata Marquez, Galhano Graziela Avila Prado, Baldissara Paolo, Scotti Roberto, Bottino Marco Antonio
Department of Restorative Dentistry, Federal University of Santa Maria, Brazil and São Jose dos Campos Dental School, São Paulo State University (UNESP), São José dos Campos, Brazil.
Int J Prosthodont. 2006 Jan-Feb;19(1):74-6.
Fiber-reinforced composite (FRC) posts can be air-abraded to obtain good attachment to the resin cement. This study tested the effect of silica coating on the flexural strength of carbon, opaque, and translucent quartz FRC posts.
Six experimental groups of FRC posts (n=10 per group) were tested, either as received from the manufacturer or after chairside silica coating (30-microm CoJet-Sand).
There was no significant difference in the flexural strength of nonconditioned (504 to 525 MPa) and silica-coated (514 to 565 MPa) specimens (P > .05) (analysis of variance). The type of post did have a significant effect on flexural strength (P < .05).
Chairside silica coating did not affect the flexural strength of both carbon and quartz FRC posts.
纤维增强复合材料（FRC）桩可通过空气喷砂处理以获得与树脂水门汀的良好附着。本研究测试了二氧化硅涂层对碳纤维、不透明和半透明石英FRC桩弯曲强度的影响。
测试了六组FRC桩（每组n = 10），一组为从制造商处接收时的状态，另一组为椅旁二氧化硅涂层处理后（30微米的CoJet-Sand）。
未处理（504至525兆帕）和经二氧化硅涂层处理（514至565兆帕）的试样的弯曲强度无显著差异（P > 0.05）（方差分析）。桩的类型对弯曲强度有显著影响（P < 0.05）。
椅旁二氧化硅涂层不影响碳纤维和石英FRC桩的弯曲强度。
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