Wiron light The new non–precious PFM Alloy Dr. Ulrich Abend R & D Alloys

Wiron lightThe new non–precious PFM Alloy

Dr. Ulrich AbendR & D Alloys

Interdentdays 2008Folie

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BEGO Dental

What do we expect from dental alloys?

• Function (mechanical properties, processing by dental technician)

• Esthetics

• Biological properties– Bio compatible


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BEGO Dental

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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BEGO Dental

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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BEGO Dental

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

Interdentdays 2008

BEGO Dental

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!

Interdentdays 2008

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Non precious alloys (as casted)

Layer formed of chromium oxide

Interdentdays 2008

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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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BEGO Dental

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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BEGO Dental

Thank you for your attention

Wiron light The new non–precious PFM Alloy Dr. Ulrich Abend R & D Alloys

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