Impression Materials are used to record the teeth, alveolar ridges, oral, and maxillo-facial structures.
Elastic Impression Materials
1. Hydrocolloids
A. Agar-agar
B. Alginates
2. Elastomers
A. Polysulphides
B. Silicones
i. Addition
ii. Condensation
C. Polyethers
Non-Elastic Impression Materials
1. Impression compound
2. Impression Plaster
3. Zinc Oxide Eugenol
4. Impression Waxes
4 Comments.