To achieve the necessary density and translucency in dental porcelain, the furnace requires an external vacuum pump (such as the PM 2932 type).
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| Parameter | Example Value | Note | |-----------|--------------|------| | Drying temp | 500 °C | Ramp rate: 50 °C/min | | Firing temp | 910 °C | Ramp rate: 55 °C/min | | Hold time | 1 min | at final temp | | Vacuum on | 450 °C | Vacuum off at 900 °C | | Cooling | Slow | Programmed or manual | To achieve the necessary density and translucency in