Orthodontic Plaster Dental Stone Gypsum 33LB

Developed specifically for orthodontic use, Orthodontic Plaster is harder and whiter than ordinary plaster. It has a long working time and trims easily.

To provide an accurate and dense cast, finest results are obtained when mixed under vacuum. To produce a glossy surface, finished models may be treated with Model Glow model soap.

Physical Properties:

Water/Powder Ratio: 37 mL/100 g powder

Working Time: 7 -9 minutes

Setting Time: 20 minutes

Setting Expansion: 0.20%

Compressive Strength, Wet (1 hour): 3,500 psi (25 MPa)

Compressive Strength, Dry (48 hrs.): 6,500 psi (45 MPa)