Au interface effect on Ti-dental porcelain bond strength investigated by spectroscopic methods and mechanical tests

2020 ◽  
Vol 1208 ◽  
pp. 127870
Author(s):  
Malgorzata Lubas
Keyword(s):  
Bond Strength ◽  
Mechanical Tests ◽  
Interface Effect ◽  
Spectroscopic Methods ◽  
Dental Porcelain

scholarly journals Influence of Sandblasting and Chemical Etching on Titanium 99.2–Dental Porcelain Bond Strength

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 116
Author(s):  
Malgorzata Lubas ◽  
Jaroslaw Jan Jasinski ◽  
Anna Zawada ◽  
Iwona Przerada
Keyword(s):  
Bond Strength ◽  
Chemical Etching ◽  
Surface Preparation ◽  
Mechanical Tests ◽  
Ceramic Substrates ◽  
Dental Porcelain ◽  
Chemical Surface ◽  
Three Point Bending ◽  
Metal Ceramic ◽  
Spectroscopy Studies

The metal–ceramic interface requires proper surface preparation of both metal and ceramic substrates. This process is complicated by the differences in chemical bonds and physicochemical properties that characterise the two materials. However, adequate bond strength at the interface and phase composition of the titanium-bioceramics system is essential for the durability of dental implants and improving the substrates’ functional properties. In this paper, the authors present the results of a study determining the effect of mechanical and chemical surface treatment (sandblasting and etching) on the strength and quality of the titanium-low-fusing dental porcelain bond. To evaluate the strength of the metal-ceramic interface, the authors performed mechanical tests (three-point bending) according to EN ISO 9693 standard, microscopic observations (SEM-EDS), and Raman spectroscopy studies. The results showed that depending on the chemical etching medium used, different bond strength values and failure mechanisms of the metal-ceramic system were observed. The analyzed samples met the requirements of EN ISO 9693 for metal-ceramic systems and received strength values above 25 MPa. Higher joint strength was obtained for the samples after sandblasting and chemical etching compared to the samples subjected only to sandblasting.

scholarly journals Evaluation of the effect of different surface treatments on the bond strength of non-precious alloy‒ceramic interface: An SEM study

2019 ◽  
Vol 13 (3) ◽  
pp. 200-207
Author(s):  
Vikram M. Belkhode ◽  
Sharayu V. Nimonkar ◽  
S. R. Godbole ◽  
Pranali Nimonkar ◽  
Seema Sathe ◽  
...  
Keyword(s):  
Bond Strength ◽  
Surface Treatments ◽  
Surface Grinding ◽  
Tensile Bond Strength ◽  
Bond Failure ◽  
Dental Porcelain ◽  
Surface Irregularities ◽  
Group A ◽  
Group B ◽  
Group D

Background. Dental porcelain has excellent esthetics in combination with biocompatibility and is one of the most commonly used restorative materials. Its low tensile strength remains a major drawback. The porcelain-fused-to-metal restorations have been introduced to increase the fracture resistance of dental porcelain. The aim of this study was to evaluate the effect of different surface treatments on the bond strength of a non-precious alloy to ceramic. Methods. The present cross-sectional observational study was conducted with forty samples of cobalt‒chromium that were fabricated with porcelain interposed between the two metal test pieces. The metal was subjected to combinations of different surface treatments. The samples group A (n=10) were not subjected to any surface treatments. Group B samples underwent sandblasting and surface grinding. Group C samples were subjected to sandblasting, surface grinding and degassing; and group D samples underwent sandblasting, surface grinding, ultrasonic cleaning and degassing. The tensile bond strength was measured in a universal testing machine, and a scanning electron microscope (SEM) was used to obtain images of the samples after surface treatment to determine the surface irregularities and after the debonding of the samples for the type of the bond failure. ANOVA was used for the statistical analysis. Results. The results showed significant variations in the tensile bond strength between the four groups (F=251.05, P=0.000). The SEM images of group A showed no surface irregularities; group C samples exhibited surface irregularities more than those in group B. Group D had the highest surface irregularities. SEM evaluations showed a statistically significant difference in the type of bond failure (P<0.001). Conclusion. Based on the results of this study, it can be concluded that the surface treatments on the metal increased the bond strength of the metal‒ceramic interface significantly. A combination of sandblasting, surface grinding and ultrasonic cleaning, followed by degassing, resulted in the highest tensile bond strength.

Effect of silica coating on the bond strength of milled pure titanium to dental porcelain

2016 ◽  
Vol 124 (5) ◽  
pp. 498-503 ◽  
Author(s):  
Jiantao Ye ◽  
Xiuhua Ye ◽  
Shaohai Chang ◽  
Lang Liu ◽  
Yiping Zhang ◽  
...  
Keyword(s):  
Bond Strength ◽  
Pure Titanium ◽  
Silica Coating ◽  
Dental Porcelain

The influence of SiO2 and SiO2–TiO2 intermediate coatings on bond strength of titanium and Ti6Al4V alloy to dental porcelain

2009 ◽  
Vol 25 (9) ◽  
pp. 1128-1135 ◽  
Author(s):  
Jarosław Bieniaś ◽  
Barbara Surowska ◽  
Anna Stoch ◽  
Halina Matraszek ◽  
Mariusz Walczak
Keyword(s):  
Bond Strength ◽  
Ti6al4v Alloy ◽  
Dental Porcelain

Study of Bond Strength of Dental Porcelain Fused to Metal

1966 ◽  
Vol 45 (4) ◽  
pp. 1047-1051 ◽  
Author(s):  
Florian J. Knap ◽  
Gunnar Ryge
Keyword(s):  
Bond Strength ◽  
Dental Porcelain

Assessment of mechanical strength of nano silica concrete (NSC) subjected to elevated temperatures

2019 ◽  
Vol 10 (1) ◽  
pp. 90-109 ◽  
Author(s):  
Hala Mohamed Elkady ◽  
Ahmed M. Yasien ◽  
Mohamed S. Elfeky ◽  
Mohamed E. Serag
Keyword(s):  
Elevated Temperature ◽  
Bond Strength ◽  
Elevated Temperatures ◽  
Mechanical Performance ◽  
Mechanical Tests ◽  
Nano Silica ◽  
Content Type ◽  
Post Exposure ◽  
Concrete Mix ◽  
Bond Strengths

Purpose This paper aims to inspect the effect of indirect elevated temperature on the mechanical performance of nano silica concrete (NSC). The effect on both compressive and bond strengths is studied. Pre- and post-exposure to elevated temperature ranges of 200 to 600°C is examined. A range covered by three percentages of 1.5, 3 and 4.5 per cent nano silica (NS) in concrete mixes is tested. Design/methodology/approach Pre-exposure mechanical tests (normal conditions – room temperature), using 3 per cent NS in the concrete mix, led to the highest increase in both compressive and bond strengths (43 per cent and 38.5 per cent, respectively), compared to the control mix without NS (based on 28-day results). It is worth noticing that adding NS to the concrete mixes does not have a significant effect on improving early-age strength. Besides, permeability tests are performed on NSC with different NS ratios. NS improved the concrete permeability for all tested percentages of NS. The maximum reduction is accompanied by the maximum percentage used (4.5 per cent NS in the NSC mix), reducing permeability to half the value of the concrete mix without NS. As for post-exposure to elevated-temperature mechanical tests, NSC with 1.5 per cent NS exhibited the lowest loss in strength owing to indirect heat exposure of 600°C; the residual compressive and bond strengths are 73 per cent and 35 per cent, respectively. Findings The dispersion technique of NS has a key role in NSC-distinguished mechanical performance with NSC having lower NS percentages. NS significantly improved bond strength. NS has a remarkable effect on elevated temperature endurance. The bond strength of NSC exposed to elevated temperatures suffered faster deterioration than compressive strength of the exposed NSC. Research limitations/implications A special scale factor needs to be investigated for the NSC. Originality/value Although a lot of effort is placed in evaluating the benefits of using nano materials in structural concrete, this paper presents one of the first outcomes of the thermal effects on concrete mixes with NS as a partial cement replacement.

scholarly journals Evaluation of the Bond Strengths between Dental Porcelain and Cobalt-Chromium Metal Frameworks Manufactured with Different Techniques after the Thermal Aging Process

Scanning ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Elif Ece Yoldan ◽  
Nurullah Türker ◽  
Ulviye Ş. Büyükkaplan ◽  
Mehmet M. Özarslan ◽  
Recep Karalı ◽  
...  
Keyword(s):  
Bond Strength ◽  
Thermal Aging ◽  
Aging Process ◽  
Bending Test ◽  
Single Type ◽  
Cobalt Chromium ◽  
Dental Porcelain ◽  
Manufacturing Method ◽  
Significant Difference ◽  
Cad Cam

Purpose. The present study is aimed at examining the bond strength of cobalt-chromium (Co-Cr) metal frameworks, prepared through different techniques, to a single type of low-temperature porcelain system after the thermal aging process. Methods. A hundred and twenty Co-Cr alloy framework specimens were prepared using conventional casting, CAD/CAM, and two commercially different laser sintering devices, and dental porcelain was applied to the specimens. A single type of dental porcelain (Kuraray Noritake Dental Inc., Tokyo, Japan) was applied to the specimens. After the subgroups were determined, half of the specimens were subjected to a thermal aging process. Bond strength of specimens was evaluated using a 3-point bending test. The surfaces of the fractured specimens were evaluated using a stereomicroscope. The metal-porcelain bonding area of samples randomly selected from 8 groups has been examined with SEM under ×1000 magnifications. Normality distribution of obtained data was examined using by a Kolmogorov-Smirnov test. The obtained data of the present study was statistically analyzed with a statistical package program (SPSS for Windows 22.0, Chicago, IL, USA). Results. There was a statistically significant difference between CAD/CAM and the other three methods, and the bonding value of the CAD/CAM group was the highest among the groups. Besides, the bond strength between dental porcelain and 4 differently produced metal frameworks was high enough to surpass the acceptable threshold (>25 MPa) according to the ISO 9693. There was no statistically significant difference between thermal aging applied and nonapplied groups. Conclusions. Based on this study, it could be shown that the metal-ceramic bond strength is dependent on the manufacturing method used, but it is independent of the thermal aging application. It was found that the bond strength values of all samples with and without thermal aging application exceeded the minimum acceptable value of 25 MPa recommended by the ISO 9693.

Sign in / Sign up

Export Citation Format

Share Document