Corrosion of dental copper, nickel, and gold alloys in artificial saliva and saline solutions

Johansson, Björn; Lemons, Jack E.; Hao, Shuo

doi:10.1016/0109-5641(89)90124-3

Cited by 52 publications

(28 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Using both AS and SS as the immersion media and evaluation by means of microphotography and SEM, Johansson et al 39) reported that Cu-based and Be-containing Ni alloys showed more tarnish and corrosion than did Ni and Au alloys -findings similar to those of W99 and PSR alloys in this study (Figs. 6 and 8).…”

Section: Corrosion Behavior Of Noble Metals and Alloyssupporting

confidence: 75%

“…They also exhibited the best clinical and in vivo results against tarnish 29,39) , and it was found that patient-related factors had as much influence on the corrosion resistance as the microstructure of the alloy. Wirz et al 29) conducted both in vitro and in vivo experiments to evaluate and compare ion release from Au-based, Co-based, and Ni-based dental casting alloys.…”

Section: Corrosion Behavior Of Noble Metals and Alloysmentioning

confidence: 94%

“…In the present study, the presence of Cl ions in all the three immersion solutions rendered them as electrolytic media. Increase in Cl ion and decrease in pH increased the aggressiveness of the electrolyte 36,39) . Cl ion from NaCl at pH 2.3 with H ion acted as HCl solution on Fe ion.…”

Section: Factors Related To Ion Releasementioning

confidence: 99%

See 2 more Smart Citations

Ion release from metal-ceramic alloys in three different media

2011

View full text Add to dashboard Cite

The aim of this in vitro study was to assess the effect of pH changes on ion release of metal-ceramic dental casting alloys. Samples from four commercially available alloys (Wirobond C, Wiron 99, Rematitan CP-Ti grade 1, and PontoStar) were prepared and polished. Ion release of alloys subjected to three different pH media (artificial saliva of pH 2.3, pH 6.5 and 0.9% saline solution of pH 7.3) for periods of 7, 15, 30, and 60 days were assessed by means of atomic absorption spectroscopy. Microscopic changes on surfaces of metallic samples before and after immersion were compared by scanning electron microscopy. ANOVA was used for statistical analysis of results. For all ions, pH and period interactions were statistically significant: highest amount of ion release occurred after 60 days of immersion regardless of pH value. For every alloy, ion release results were highest in artificial saliva of pH 2.3 and lowest in 0.9% saline solution. It was concluded that ion release from alloys was pH-dependent.

show abstract

Section: Corrosion Behavior Of Noble Metals and Alloyssupporting

confidence: 75%

Section: Corrosion Behavior Of Noble Metals and Alloysmentioning

confidence: 94%

See 1 more Smart Citation

Ion release from metal-ceramic alloys in three different media

2011

View full text Add to dashboard Cite

show abstract

“…Solutions simulating the biological conditions include 0.9% NaCl solution, phosphate-buffered saline (PBS (-)), and artificial saliva [7][8][9][10] . Yoneyama et al 11) pointed out that 0.9% NaCl solution reproduced the body fluid to some extent, but lacked quantitative properties, particularly, reliability of the released Ti ion level, and 1.0% lactic acid solution was suitable.…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

Yamazoe

2010

Dental Materials Journal

View full text Add to dashboard Cite

Metal ions released in 1% lactic acid solution from combinations of titanium fixtures with superstructures made of dental precious metal alloys (dental alloys) and titanium and differences based on the fixing method were investigated. In combinations of titanium with dental alloys, the level of Ti release was influenced by micro-structure of titanium: it was lower when the grain size was smaller. In titanium-titanium combinations, differences in the micro-structure of metal also markedly influenced the dissolution: the level of release increased when the micro-structure of titanium was different. The Ti and V release levels were higher in combination with titanium alloy and titanium than with titanium alloy and dental alloys. Regarding the superstructure-fixture fixing method, the level of Ti release was significantly lower in cement than in direct fixation.

show abstract

“…As a result of these, corrosion analyses of dental alloys are considered fundamental tests since ion release has been closely linked with biological reactions such as allergy and toxicity (Schmalz and Garhammer, 2002). The release of metal ions can also lead to poor aesthetics and compromise the physical properties of dental alloys (Johansson et al, 1989;Wataha, 2000). Since Co-Cr denture frameworks are physically wide, presenting a large surface area and interact actively with corrosion inducers such as abrasion from foods, liquids and toothbrushes, continuous saliva flow, temperature fluctuation and varying pH (Gil et al, 1999;Can, 2007) they are liable to release more metallic ions than fixed partial denture substructures partially veneered with ceramic or composite (Wataha, 2000).…”

Section: Introductionmentioning

confidence: 99%

In vitro corrosion analyses of heat treated cobalt-chromium alloys manufactured by direct metal laser sintering

Alifui‐Segbaya

Lewis

Eggbeer

et al. 2015

Rapid Prototyping Journal

View full text Add to dashboard Cite

Email:f.alifui-segbaya@griffith.edu.au ABSTRACT Purpose: Heat treatments are indicated as necessary in complex intra-oral framework production by additive manufacturing to remove accumulated thermal stresses. However, heat treatments have been linked to corrosion in cast dental alloys. Currently, there are few publications on this subject for laser sintered dental alloys required for academic review. This research paper compared corrosion data obtained from additive manufactured heat-treated and non heat-treated cobaltchromium alloy.Design/Methodology/Approach: Five rectangular specimens (n=5), each with a total surface area of 10.27cm² were fabricated for the two groups. Specimens were immersed in artificial saliva suspended by a nylon thread for 42 days at 37°C.Readings for cobalt, chromium and molybdenum ions released into solution were obtained using an atomic absorption spectrometer at 1, 4, 7, 14, 21, 28, 35, and 42 day intervals at a detection limit of one part per million. Test methods are in accordance with ISO 10271. Findings:Results showed a higher ion release in the heat-treated sample, statistically significant at 99% confidence level (P<0.01). A two-way Anova test conducted showed that there was a main effect of day and a main effect of finish, and there was also a significant interaction between these factors. Originality/value:The study concludes that, although ion release in both samples was within the safe level recommended by ISO for the three major alloying elements, heat-treatment indeed contributed extensively to the reduced corrosion resistance in the laser sintered cobalt-chromium alloy. Further biocompatibility tests are recommended.

show abstract

Corrosion of dental copper, nickel, and gold alloys in artificial saliva and saline solutions

Cited by 52 publications

References 4 publications

Ion release from metal-ceramic alloys in three different media

Ion release from metal-ceramic alloys in three different media

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

In vitro corrosion analyses of heat treated cobalt-chromium alloys manufactured by direct metal laser sintering

Contact Info

Product

Resources

About