Bond strength of three porcelains to two forms of titanium using two firing atmospheres

Atsü, Saadet Sağlam; Berksun, Semih

doi:10.1067/mpr.2000.110267

Cited by 85 publications

(69 citation statements)

References 16 publications

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“…The cobalt-chromium (Co-Cr) alloys became popular due to their low toxicity and good mechanical properties, such as adequate resistance to permanent deformation and high modulus of elasticity [4][5][6][7]. However, the difficulty in controlling chromium oxide (Cr 2 O 3 ) layer formation at high temperatures remains a drawback of this basic alloy, negatively affecting the bonding between metal and aesthetic veneering ceramic [7].…”

Section: Introductionmentioning

confidence: 99%

The effect of a bonding agent and thermo-mechanical cycling on the bond strength of a glass-ceramic to gold and cobalt-chromium alloys

et al. 2014

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To evaluate the effects of bonding agent and thermo-mechanical cycling on the flexural bond strength of a gold and cobalt-chromium alloy to a feldspathic ceramic. Sixty-four metal bars were fused (3 × 25 × 0.5 mm 3 ): 32 with a gold alloy and 32 with a cobalt-chromium (Co-Cr) alloy. Over the bars' central area (8 × 3 mm 2 ), a bonding agent and two glass-ceramic layers were fired, totaling 1 mm in ceramic thickness. Eight specimens of each alloy were randomly divided according to the bonding agent (application or the absence thereof) and the thermo-mechanical cycle (3,000 thermo-cycles and 20,000 mechanical-cycles; or no cycling). The flexural bond strength between the metal alloy and the ceramic was evaluated by a three-point bending test and data were subjected to three-way ANOVA and Tukey's test (α = 0.05). The failure mode was classified. No significant interactions were observed among the three factors evaluated (alloy, bonding agent, and thermo-mechanical cycling; p = 0.5734). There was no statistically significant difference between the alloys (p = 0.8559). The interaction between alloy/bonding agent (p = 0.0001) showed that, for the gold alloy, the group with the bonding agent showed mean values of flexural bond strength significantly higher than those of the group without the bonding agent, while, for the Co-Cr alloy, the groups with or without bonding agent had similar mean values of flexural bond strength. The interaction between alloy/thermo-mechanical cycling (p = 0.0001) showed that, for the gold alloy, the non-cycled group had flexural bond strength mean values significantly greater than those of the cycled group, while for the Co-Cr alloy, both non-cycled and cycled groups had similar mean values. The bonding agent significantly improved the flexural bond strength between the ceramic and the gold alloy, but had no influence on the Co-Cr alloy. Thermo-mechanical cycling decreased the flexural bond strength of the gold alloy specimens, but did not affect the Co-Cr specimens.

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Section: Introductionmentioning

confidence: 99%

The effect of a bonding agent and thermo-mechanical cycling on the bond strength of a glass-ceramic to gold and cobalt-chromium alloys

et al. 2014

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“…The effect of firing conditions has been discussed and it is clearly documented that multiple firings had no effect on bond strength [17], but that firing in an argon atmosphere, thus reducing oxide formation, improved bond strength [30]. One study [15] showed that an increase in ceramic bond strength was observed with firing temperatures that were 20 C higher (Table IV).…”

Section: Resultsmentioning

confidence: 99%

“…It was also documented that there could be differences in bond strength between different brands of porcelain [22,24,29,30] and that recommended firing temperatures differed. It could be stated that metal properties also have to be considered in order to optimize the bonding effect [27], as well as altering the contents of the porcelain, such as the addition of barium to improve bond strength [28].…”

Section: Resultsmentioning

confidence: 99%

Bonding between titanium and dental porcelain: A systematic review

Haag

Nilner

2010

Acta Odontologica Scandinavica

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Objectives. The aims of this literature review are to provide answers to questions on how to improve bonding between titanium and dental porcelain and how to further implement, in clinical practice, ceramic-veneered titanium as an alternative to conventional metal-ceramic systems. Material and methods. A literature search of PubMed and also among referenced published scientific papers was performed and 24 fulfilled the search criteria, namely mentions of titanium, ceramics and bond strength. These papers were compiled for comparison and evaluated regarding the bond strength achieved with different methods. Results. The results strongly indicate that there are possibilities to improve both the present materials and methods for titanium-ceramic veneering. Conclusions. The results indicate that present knowledge is sufficient to conclude that veneering titanium with low-fused porcelain for crowns and fixed partial dentures can be recommended for routine clinical use.

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“…A key advantage of CAD/ CAM machining over casting is that it precludes the formation of the hard surface layer encountered with titanium castings, hence ensuring adequate porcelaintitanium bonding 13) . Besides, a thinner oxide layerwhich was more compatible with the porcelain systemswas reportedly formed on milled titanium surfaces 10,14,15) . Despite the advantages of high precision and improved porcelain-titanium bonding, the CAD/CAM process is time-consuming and generates substantial material waste.…”

Section: Introductionmentioning

confidence: 99%

Shear bond strengths of veneering porcelain to cast, machined and laser-sintered titanium

2011

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The aim of this study was to compare the shear bond strengths (SBS) of cast, machined, and laser-sintered titanium to dental porcelain. Two kinds of dental porcelains (Titankeramik and Triceram) were applied on cast (Tritan), machined (DC-Titan), and laser-sintered (EOSINT) titanium specimens (n=10). SBS test was conducted, and fracture surface analysis was also performed to determine the failure modes. Two-way ANOVA, Student's t-test, and post hoc test were used to analyze the data (p<0.05). Among the titanium specimens, the SBS values of laser-sintered titanium specimens were significantly higher than the machined and cast titanium specimens (p<0.01). Comparison of Triceram and Titankeramik veneering porcelains showed no statistically significant differences in SBS when they were applied on laser-sintered and cast titanium specimens (p>0.05). Specimens in all the test groups exhibited adhesive or combined failure, with the Titankeramik-machined titanium group exhibiting the highest adhesive failure rate (40%). Results showed that porcelain-titanium bond strengths could be improved by using the new laser sintering technique to produce titanium for prosthodontic applications.

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Bond strength of three porcelains to two forms of titanium using two firing atmospheres

Cited by 85 publications

References 16 publications

The effect of a bonding agent and thermo-mechanical cycling on the bond strength of a glass-ceramic to gold and cobalt-chromium alloys

The effect of a bonding agent and thermo-mechanical cycling on the bond strength of a glass-ceramic to gold and cobalt-chromium alloys

Bonding between titanium and dental porcelain: A systematic review

Shear bond strengths of veneering porcelain to cast, machined and laser-sintered titanium

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