Equipment Used In Prosthodontic Laboratory
Plaster Dispenser
This is storage cum dispensing equipment for gypsum products mainly dental plaster and dental stone. This is wall-mounted equipment that has a vibrator mechanism to dispense dental stone or plaster in the desired quantity. It prevents contamination of gypsum products.
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Bunsen Burner
It is a gas burner. The fuel for the burner is liquefied petroleum gas (LPG). It produces a clean blue flame when gas and air are available in balance. It is made up of metal and has provision for gas inlet and gas outlet valve.
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Read and Learn More: Preclinical Prosthodontics Notes
It has an air collar to adjust the available air while burning. It is used to heat the instrument used for wax manipulation and carving. It should give a blue flame when burning.
Model Trimmer
Model trimmer is electric equipment used to trim and contour the dental casts. The model trimmer has an abrasive wheel that rotates to trim the cast. It has a cast-holding stand or work table. The model trimmer has provision for water inlet. Water is sprayed on the abrasive wheel to prevent clogging and keep it clean of dental
plaster or stone. The water supply is maintained for at least 1 minute after trimming is over. This is done to flush out the dental stone/plaster and to prevent clogging.
Bench Lathe
This equipment is used for a variety of laboratory procedures. It is used for gross trimming, grinding, finishing, and polishing procedures. The abrasive grinding wheel is attached at one end and the other end has provision for the attachment of a rag wheel, trimming burs, or stones.
Hydraulic Press
It is a hydraulic equipment. It has provision to slowly increase pressure according to need. This equipment is used during the packing procedure to intimately close the flask. During trial closure, 1,500 psi pressure is and for final closure 3,500 psi pressure is applied on the flask under a hydraulic press.
Dewaxing Unit
This is electric equipment used for dewaxing or wax elimination procedures. It has a heating coil to heat the water in a water bath. During the dewaxing procedure molten wax may come out through the flask and mix with water, and
this water tap is provided. The flask and clamp assembly are placed in boiling water for 5 minutes for the dewaxing procedure.
Acrylizer Unit
It is electrical equipment used for the acrylization of heat cure acrylic resin. It has provision for a water bath and a special mechanism (thermostat) for providing time and temperature control. The temperature and time duration can be set by the provided mechanism. If a long curing cycle is required for curing the acrylic resin, the temperature can be set at 74°C using temperature control and time
can be set for 8 hours using time control, so the same temperature will be maintained for a required time interval.
Deflasking Unit
This is pneumatic equipment. It is used for the separation of two halves of the flask after
the polymerization of the complete denture. Some equipment has the provision of a pneumatic chisel to separate cured dentures from investment plaster.
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