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.

• Water/Powder Ratio: 37mL/100g
• Working Time: 7 - 9 minutes
• Setting Time: 14 minutes
• Setting Expansion 0.20%
• Compressive Strength, Wet (1 hr.): 3,500 psi (25 mPa)
• Compressive Strength, Dry (48 hrs.): 6,500 psi (45 MPa)