Dental Impression Material Putty For Dental Lab Use is made by blending various high quality polymers. After the putty put into the mouth, it can completely blend with saliva and does not flow out easily, then it can reach best elasticity and high tear resistance. And after lab equipment press, it can achieve best accuracy. FDA approved and CE certificated. Material for taking dental impressions. Features include: is a water based material impression, not sticky, and easy to use, can be used directly after mixing with potable water, high cohesion , low shrinkage, suitable for lab use in dental students, can be stored for long time, when the lid is tight airtight.