Caja Yeso Dental OrtodonciaCaja Yeso Dental Ortodoncia Bolsa Yeso Dental Ortodoncia

Orthodontics Gypsum Rock



This product is a calcium's sulphate “alpha” hemihydrated gypsum obtained from highly select and purity mineral exposed to high pressure calcinations to achieve a product of maximum whiteness.


The crystal of this gypsum has a few porosity, very pure an very regular shape that permits the use of very small amount of strength, hard models and exceptional whiteness.

Compressive Strength

850 Kg/cm2 after 48 hr of setting and using mix rate of 30 cc water with 100 g powder.

Setting Expansion

The setting expansion for this gypsum is controlled in 0.076% linear.


90% pass trough a 250 mesh.

“Vicat” Setting Time

Of 5 to 10 minutes.


Plastic can with hermetic seal containing 25 Kg packed in 1 Kg polyethylene bags. Card box containing 10 Kg packed in 1 Kg polyethylene bags.


Used for working and studying models with a pure white color.

Physical Properties


Water to 100g of Powder

30 – 35 mL

Working Time

3 – 5  minutes

"Vicat" Time

5 – 10  minutes

Compressive Strength

WET (1 hr)

350  Kg/cm2

DRY (48 hrs)

850  Kg/cm2

Setting Expansion

0.076 %  linear

Particle Size

62 micron