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Product Overview
Zirkonzahn offers a unique approach to glass ceramic alternatives with their Prettau 4 Anterior material. While not using traditional glass ceramic burs.Interoperable replacement glass‑ceramic bur series matching Zirkonzahn spindle‑holder specifications. Designed for medium‑volume labs with mixed daily glass‑ceramic orders, balancing service‑life and purchase‑cost.
Key Advantages
Superior Strength: Flexural strength of 670 MPa compared to traditional glass ceramics
Polychromatic Material: Multi-color characteristics with color, translucency, and flexural strength gradients
Reduced Milling Time: processing results in shorter milling times and lower tool wear
Distinctive Features
Glass ceramics require specific milling parameters to prevent chipping and maintain esthetic properties. Wet milling is generally recommended for lithium disilicate and E-max materials, while zirconia alternatives like Prettau 4 Anterior process dry with standard zirconia burs
Usage Recommendations
Select Zirkonzahn native CAM preset "Glass‑Ceramic / Lithium Disilicate", enable full wet‑cooling.
Large‑diameter bur for bulk rough removal; small‑diameter bur for interproximal and marginal fine‑finishing.
Complete tool‑length calibration for every bur installation.
Avoid aggressive single‑pass cutting depth on thin‑wall veneer blanks.
Important Precautions
Dry‑milling will induce invisible thermal micro‑cracks inside glass‑ceramic blanks.
Inspect diamond coating before processing high‑value aesthetic cases.
Do not use glass‑ceramic burs for zirconia milling, cross‑usage accelerates wear.
Machine Models:Zirkonzahn M1, M2, M4, M5, M6
|
Effective length |
16mm |
8.6mm |
10mm |
|
Shank diameter |
6mm |
6mm |
6mm |
|
Total length |
50mm |
50mm |
50mm |
|
Flute diameter |
2.5mm |
1.25mm |
0.6mm |
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