Materials

CAD/CAM Wax Disc System Compatibility: Open 98 mm vs Zirkonzahn 95 mm vs Amann Girrbach

2026-10-19

CAD/CAM wax discs look interchangeable but are not — the arbor diameter and hole pattern decide whether the blank even fits your mill. Pick wrong and the disc cannot be centred for a clean cut.

The three systems

SystemDiameterFor
OpenØ98 mmUniversal open CAD/CAM mills and arbors
ZirkonzahnØ95 mmZirkonzahn milling units
Amann GirrbachAG formatAG mill owners

See the full set: CAD/CAM wax discs in all three systems.

What makes a good pressable wax

  • Low thermal expansion so the fit holds after the press cycle.
  • Clean burn-out with minimal residue, so ceramic bonds without contamination.
  • Stable wax flow for thin margins and detailed anatomical wax-ups.

Matching to your mill

Confirm the arbor, spindle and scanning workflow before ordering. If you run mixed equipment, keep an Open 98 mm wax disc in stock for the universal mill and a Zirkonzahn or AG disc for the dedicated unit — one digital wax-up process across every pressable indication, paired with zirconia for the final restoration.

References & Further Reading

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