Ortotypo 4 is a type-4, extra-hard stone specifically developed for all orthodontic models. Characterized by its hardness, extra-fine granulometry, low expansion and fast setting time, Ortotypo 4 is compatible with all impression material and all products for the isolation of plaster against plaster.

Ortotypo 4 is often used with acrylic resins (both hot or cold polymerization processes) on an unaltered surface. It has low breakage risk. The working time can be adjusted with Time Out.

Features

• Final color: Extra-white
• Water/powder ratio: 22 ml/100
• Imbibition time: 20 seconds
• Mixing time (manual): 60 seconds
• Mixing time (mechanical): 30 seconds
• Pouring time: 3 minutes
• Setting time: 7 minutes
• Time for separation after setting: 30 minutes
• Expansion setting (2 hours): 0.08%
• Compressive strength (after 24 hours): 103 MPa, 14.927 psi, 1.051 Kg/cm2
• Rockwell hardness (after 24 hours): 95 HRL

The above time scores may vary according to the impression material used. Measurements were taken at 23°C with deionized water.

Packaging

• TOR412 – Carton box containing 10 bags, 12.5 kg each
• TOR425 – 25 Kg. plastic bucket