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- W2149396545 abstract "he bond strength by three point bending strength of two metal substrates (commercially pure titanium or gradeII, and Ti-6Al-4V alloy or grade V) combined to three distinct low-fusing ceramic systems (LFC) and the natureof porcelain-metal fracture by scanning electron microscopy (SEM) were evaluated. The results were compared toa combination of palladium-silver (Pd-Ag) alloy and conventional porcelain (Duceram VMK68). Sixty metal stripsmeasuring 25x3x0.5mm were made – 30 of titanium grade II and 30 of titanium grade V, with application of thefollowing types of porcelain: Vita Titankeramik, Triceram or Duceratin (10 specimens for each porcelain). Theporcelains were bonded to the strips with dimensions limited to 8x3x1mm. The control group consisted of tenspecimens Pd-Ag alloy/Duceram VMK68 porcelain. Statistical analyses were made by one-way analysis of variance(ANOVA) and Tukey test at 5% significance level. Results showed that the bond strength in control group (48.0MPa+ 4.0) was significantly higher than the Ti grade II (26.7MPa + 4.1) and Ti grade V (25.2MPa + 2.2) combinations.When Duceratin porcelain was applied in both substrates, Ti grade II and Ti grade V, the results were significantlylower than in Ti grade II/Vitatitankeramik. SEM analysis indicated a predominance of adhesive fractures for thegroups Ti grade II and Ti grade V, and cohesive fracture for control group Pd-Ag/Duceram. Control group showedthe best bond strength compared to the groups that employed LFC. Among LFC, the worst results were obtainedwhen Duceratin porcelain was used in both substrates. SEM confirmed the results of three point bending strength." @default.
- W2149396545 created "2016-06-24" @default.
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- W2149396545 date "2003-01-01" @default.
- W2149396545 modified "2023-09-27" @default.
- W2149396545 title "EVALUATION OF LOW-FUSING CERAMIC SYSTEMS COMBINED WITH TITANIUM GRADES II AND V BY BENDING TEST AND SCANNING ELECTRON MICROSCOPY AVALIAÇÃO DE SISTEMAS CERÂMICOS DE BAIXA FUSÃO COMBINADOS COM TITÂNIO GRAU 2 E 5 POR ENSAIO FLEXÃO E MICROSCOPIA ELETRÔNICA DE VARREDURA" @default.
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