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Multilayer dental pmma

Multilayer dental pmma blocks series that fit zirkon zahn, amann girrbach, wieland open dental cad/cam milling system. The pmma blocks have fours layers mixed together that offer aesthetically look for dental restoration.

Technical

1. Melting point: 110-115℃(DSC )

2. Density: 1.35-1.45g/cm³

3. Hardness:85-90(Shore hardness )

4. Linear Expansion:0.01%

5. Thermal decomposition residue: <1.0%

6. Antistatic: Yes

7. Component: PMMA >99%,Pigment< 0.1%

8. Organic residues :<1.0%

9. Application:
Milling ;Temporary Crown,

10. Machining parameters:

1). Spindle speed:18000-20000r/min
2). Rough machining :0.5 mm
3). Finishing machining :0.05 mm.

Multilayer pmma properties:

 

Bending strength
≥ 120 [MPA]
Density
≥ 1.17 [g/cm3]
Vickers hardness
≥ 25 [HVI]
Water uptake
≤ 25 [μg /mm3]
Dissolution value
≤ 5 [μg /mm3]
System
Wieland / Amann / Zirkon / Sirona
Thickness
12 / 14 / 16 / 18 / 20 / 22 / 25 / 30 mm