Dental Plaster is used mainly for flashing and mounting dental models. It can be mixed with a harder dental stone to adjust setting time and increase strength.
Safety note:
DO NOT attempt to make an enclosed cast of body parts such as hands or fingers. Remember that you must always follow the preparation, mixing, and health and safety warnings for a particular plaster as displayed on its packaging. This safety alert is to advise the potential risks associated with the setting of certain dental, casting and pottery plasters when making fully enclosed casts of body parts such as hands or fingers. Plaster, when mixed with water, gives off heat during its setting phase. This may result in serious skin burns if fully enclosed casts of body parts such as hands or fingers are being made.
Advantages include:
- High strength
- Quick set time
Physical Properties
- Colour: White
- Working time: Setting Type – 5-10 mins knife-set time
- Packaging: 20kg bags
- Compressive Strength*: Wet 9700kPa (min) Dry 15,000kPa (min)
- Linear Expansion*: 0.05-0.25%
- S.G.: 2.63
- Solubility: 0.6g/100ml
- Decomposition Temperature: 163o C
- VOC: Less than 50 grams per litre
- Values determined at water/plaster ratio of 50ml/100g.
Applications
A plaster for general laboratory purposes.
A finely ground high strength plaster manufactured to comply with AS1652-1974 (Dental Laboratory Plaster).
