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Effect of Interlayer Composition on Bond Strength between FRC Framework and Composite Veneer
 Ibarra, Jonatanh José ; Pavelka,, Vladimír (oponent) ; Poláček, Petr (vedoucí práce)
composite materials and determine the influence of interlayer composition in the bond strength of the adhesive joint between FRC frameworks and composite veneer (PFC) for dental applications. Samples consisting in FRC rods made with commercial dimethacrylate and S-glass fibers and PFC made of a resin mixture (bis-GMA and PEGDMA) with barium glass powder as the filler were constructed. A total of 84 samples were prepared and measured. The samples were divided into five different groups. The first group was made of series of samples without any interlayer. The other four groups were divided according the composition of the interlayer (thickness and resins used). PFC of the specimens differed in the filler content (0, 10, 40 wt. %). The FRC rod was identical for all samples. The universal testing machine ZWICK Z010 was used to determine the shear strength of adhesive joint. A Scanning Electron Microscope (SEM) was used to study the loci of failure. Results show that the addition of an interlayer between the fiber-reinforced and particle filled composite, resulted in an improvement on the shear strength bond. This is very important, since the use of these materials in dentistry has been increasing in the last years and adhesion still reminds one of the biggest problems in clinical application.
Úplný záznam
Effect of Interlayer Composition on Bond Strength between FRC Framework and Composite Veneer
 Ibarra, Jonatanh José ; Pavelka,, Vladimír (oponent) ; Poláček, Petr (vedoucí práce)
composite materials and determine the influence of interlayer composition in the bond strength of the adhesive joint between FRC frameworks and composite veneer (PFC) for dental applications. Samples consisting in FRC rods made with commercial dimethacrylate and S-glass fibers and PFC made of a resin mixture (bis-GMA and PEGDMA) with barium glass powder as the filler were constructed. A total of 84 samples were prepared and measured. The samples were divided into five different groups. The first group was made of series of samples without any interlayer. The other four groups were divided according the composition of the interlayer (thickness and resins used). PFC of the specimens differed in the filler content (0, 10, 40 wt. %). The FRC rod was identical for all samples. The universal testing machine ZWICK Z010 was used to determine the shear strength of adhesive joint. A Scanning Electron Microscope (SEM) was used to study the loci of failure. Results show that the addition of an interlayer between the fiber-reinforced and particle filled composite, resulted in an improvement on the shear strength bond. This is very important, since the use of these materials in dentistry has been increasing in the last years and adhesion still reminds one of the biggest problems in clinical application.
Úplný záznam

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