Van Thompson DDS

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IPS e.max CAD Lithium Disilicate Study
Van Thompson DDS Petra Guess
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• Single crowns made of IPS e.max lithium
  disilicate can be
• 3X STRONGER
• than a Zirconia single unit crowns!

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Buccal Lingual cusp loaded increasing cyclical
load every 10k cycles until failure
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Fatigue Zirconia supported / Press-on
300 N 50 K
200 N 40 K
Load
Load
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Fatigue IPS e.max CAD Lithium Disilicate Survivor
at 900 N and 180 K cycles (profile I)
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Fatigue IPS e.max CAD Lithium Disilicate Survivor
at 900 N and 180 K cycles (profile I)
Only superficial damage at load surface
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IPS e.max CAD Lithium Disilicate Biaxial mouth
motion step stress fatigue

• No Cracks - only superficial surface damage
• Specimens were tested up to 900 N of force with
  180,000 cycles and no cusp shearing !

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Survival of test materials based on Load and
Number of Cycles
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IPS e.max CAD Lithium Disilicate
This is by far the most robust system we have
tested to date
Van Thompson DDS
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