Interfacial shear bond strength between different base metal alloys and five low fusing feldspathic ceramic systems

Sipahi, Cumhur; Özcan, Mutlu

doi:10.4012/dmj.2011-143

Cited by 12 publications

(10 citation statements)

References 17 publications

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“…Van der Waal's forces imply attraction based on atom-atom interactions with no chemical interaction taking place. Dental porcelains and metals have slightly different CTEs, and the difference is responsible for the compressive forces [3,47,48]. If the porcelain has a slightly lower CTE value than the metal, it is exposed to favorable residual compression on cooling from the firing temperatures.…”

Section: Bonding Of Dental Porcelain To Titaniummentioning

confidence: 98%

Bonding of Dental Ceramics to Titanium: Processing and Conditioning Aspects

Antanasova

Jevnikar

2016

Curr Oral Health Rep

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Difficulties related to titanium processing (casting) and the problematic titanium-ceramic bond have been limiting the latter's application in prosthetic dentistry for many years. Recent advances in subtractive and additive CAD/CAM technologies have provided alternative routes for titanium processing. The effect of a processing route on titanium surface characteristics and on the strength of its bond to porcelain need to be assessed, since most paths for enhancing porcelain bonding involve preparation of the titanium surface. Several approaches to bond enhancement have been proposed, some of which are widely accepted (abrasion by airborne-particle and application of a bonding agent), while others have not resulted in a clinical breakthrough. Despite efforts to improve titanium bonding to porcelain and to develop titanium compatible, low-fusing porcelains, many in vitro studies report bond strengths to titanium that are inferior to those for base metals and noble dental alloys. Only a few clinical studies have been reported, revealing that titanium-ceramic restorations are susceptible to mechanical complications (porcelain fractures in 33 % of cases). Current knowledge on titanium-ceramic bonding is here reviewed, focusing on the recent attempts to overcome the limitations of the system and on recent advances in titanium processing. Optimization of the currently available processing and surface conditioning methods seems to be necessary.Although most of the proposed surface preparation methods (surface coating and roughening) appear to show a certain degree of porcelain bond improvement, many of them require application of additional complex procedures. Simplification and improved efficiency therefore appear to be the essentials for implementation of these methods in clinical practice.

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Section: Bonding Of Dental Porcelain To Titaniummentioning

confidence: 98%

Bonding of Dental Ceramics to Titanium: Processing and Conditioning Aspects

Antanasova

Jevnikar

2016

Curr Oral Health Rep

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“…This has enabled the employment of high quality treatment for a large number of patients, especially those with low purchasing power 2,7 . However, difficulty in handling, susceptibility to oxidation, high melting temperature, and inferior finishing are the main disadvantages of these alloys 3,8 . The advantages of basic metal alloys include high fracture strength, high modulus of elasticity, rigidity, and resistance to permanent deformation 9,10 .An additional advantage of the metal structure of a fixed prosthesis is its resistance to plastic deformation 11 .…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of ceramic flexural strength in co-cr and ni-cr alloys joined by TIG welding and conventional brazing

et al. 2017

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The purpose of the present study was to evaluate the flexural strength of specimens made of nickel-chromium (Ni-Cr) and cobalt-chromium (Co-Cr) alloys and joined by tungsten inert gas (TIG) welding and conventional brazing. Ni–Cr and Co–Cr base metal specimens (n = 40, each) were cast and welded by TIG or brazing. The specimens were divided into six groups (2 base metals, four welded specimens). Ceramic systems were applied to the central part of all the specimens. A three-point bending test with a velocity of 0.5 mm/m was performed on the specimens up to the point of the first ceramic bond failure by measuring the flexural strength. Data were analyzed using two-way ANOVA and Bonferroni’s tests. Conventional welding showed the lowest flexural strength results for both alloys, while the TIG weld and the control group presented with varying bond strengths for the alloys studied. We concluded that TIG welding was superior to the conventional welding method for both Ni–Cr and Co–Cr alloys with regard to the flexural strength of the ceramic.

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“…However, these results were conflicting with the results obtained in other few studies. [ 32 33 34 ] The difference could be attributed to difference in alloy and porcelain compositions, variations in sample size, and difference in the testing methodology.…”

Section: Discussionmentioning

confidence: 99%

Evaluation and comparison of shear bond strength of porcelain to a beryllium-free alloy of nickel-chromium, nickel and beryllium free alloy of cobalt-chromium, and titanium: An in vitro study

Singh

Ramachandra

Devarhubli

2017

J Indian Prosthodont Soc

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Aims:The aim of this study was to evaluate and compare the shear bond strength of porcelain to the alloys of nickel-chromium (Ni-Cr), cobalt-chromium (Co-Cr), and titanium.Materials and Methods:A total of 40 samples (25 mm × 3 mm × 0.5 mm) were fabricated using smooth casting wax and cast using Ni-Cr, Co-Cr, and titanium alloys followed by porcelain buildup. The samples were divided into four groups with each group containing 10 samples (Group A1–10: sandblasted Ni-Cr alloy, Group B1–10: sandblasted Co-Cr alloy, Group C1–10: nonsandblasted titanium alloy, and Group D1–10: sandblasted titanium alloy). Shear bond strength was measured using a Universal Testing Machine.Statistical Analysis Used:ANOVA test and Tukey's honestly significance difference post hoc test for multiple comparisons.Results:The mean shear bond strength values for these groups were 22.8960, 27.4400, 13.2560, and 25.3440 MPa, respectively, with sandblasted Co-Cr alloy having the highest and nonsandblasted titanium alloy having the lowest value.Conclusion:It could be concluded that newer nickel and beryllium free Co-Cr alloys and titanium alloys with improved strength to weight ratio could prove to be good alternatives to the conventional nickel-based alloys when biocompatibility was a concern.

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Interfacial shear bond strength between different base metal alloys and five low fusing feldspathic ceramic systems

Cited by 12 publications

References 17 publications

Bonding of Dental Ceramics to Titanium: Processing and Conditioning Aspects

Bonding of Dental Ceramics to Titanium: Processing and Conditioning Aspects

Comparative analysis of ceramic flexural strength in co-cr and ni-cr alloys joined by TIG welding and conventional brazing

Evaluation and comparison of shear bond strength of porcelain to a beryllium-free alloy of nickel-chromium, nickel and beryllium free alloy of cobalt-chromium, and titanium: An in vitro study

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