When preparing, pour water first and then put the powder, so that the powder will not be washed away by water and floated in the air, and the amount will not be reduced, so that the preparation can be accurate.

Dental model is a model of teeth, which is usually used in stomatology and dental plastic surgery. Taking a dental model is to copy the tooth model in your mouth with professional materials, and then pour it out with plaster, so that porcelain teeth are made of plaster model.