Wiron lightThe new non–precious PFM Alloy
Dr. Ulrich AbendR & D Alloys
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What do we expect from dental alloys?
• Function (mechanical properties, processing by dental technician)
• Esthetics
• Biological properties– Bio compatible
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Wiron light
Casting made simple
by excellent melting properties
–easy recognition of the proper moment for casting
–high fluidity of the melt: reliable filling of the mould
–low casting temperature: 1350 °C
–reduced preheating temperature: 800°C
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Wiron Light in Fornax T
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Wiron Light torche casting in Fundor T
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Wiron light
Easy finishing
by smooth surface after casting
–low temperatures during casting guarantee little
reaction with investment material
–thin oxides with light colour
–oxides are easy and fast to remove
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Wiron light
Reliable results
by outstanding mechanical properties
–high strength allows production of delicate structures
–CTE optimally adjusted: normal cooling, in general
–excellent bond strength for many available ceramics
–Light oxide for improved aesthetics after veneering
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SUMMARY
Easy to cast
Casting temperature: 1350 °C / 2460 °F
Preheating temperature: 800 °C / 1472 °F
Easy to grind
Light coloured oxide
For reliable results
Outstanding strength
Normal cooling
-> www.bego.com
Wiron light
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Veneered real C&B
Carat
Carmen
Creation
d.Sign
Finesse
Heraceram
Noritake
VM 13
Corrosion behaviour of precious and non precious alloys
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Corrosion & bio compatibility
• Corrosion is the key to the bio compatibility of alloys
• Reactions occur only if ions are released into the body!
• The higher the amount of released ions, the higher the risk of unwanted biological reactions
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Chromium content
Non precious alloys do not corrode because of passivation
Passivation:Passivation: formation of mechanical and chemical stable chromium oxide layers
20 % Chromium are necessary for stable layers!
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Non precious alloys (as casted)
Layer formed of chromium oxide
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4283
231798 15 34122 19 84 3
1383
322
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
Ni Cr Mo Ga Fe
Ove
r 4
wee
ks c
um
ulat
ed io
n r
elea
se [
µg/
cm2 ]
Ni67Cr14Mo8Ga7Fe5Ni65Cr23Mo9,5 ((Wiron 99Wiron 99))
Ni61Cr26Mo11Fe1
Chromium content vs corrosion
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Little booklet offer informations about allergies and testing substances.Available in German, French or English language by BEGO.
To find, as well, at the BEGO- Homepage (TrainingsCenter, AllergieCompass)
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Wiron 99 remains the BEGO premium nickel-chrome bonding alloy.Wiron 99 users are happy and should stay happy!
Wiron lightis designed to offer the opportunity to win new customers
among the users of beryllium containing alloys!
The time is right! More and more technicians will become aware of the danger in regard to beryllium and will swap their alloy.
Wiron light provides among other featuresexcellent melting properties,a lighter oxide, a biocertificate and a favourable price(less 15 % compared to Wiron 99)
Wiron light- beryllium-free -
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Ni-Cr
Bonding alloys For acrylic veneering
Wiron 99 top
Wiron light medium
Wirocer Plus basic Wirolloy NB Wirolloy
BEGO non-precious alloys (1)
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Co-Cr
Bonding alloys Partial denture alloys
Wirobond 280top
WIRONIUM alloys
Wirobond C medium Wironit LAWirobond LFC
basic Wironit Wironit XHWirobond SG
BEGO non-precious alloys (2)
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Thank you for your attention