are older versions that release alcohol as a byproduct, leading to slight shrinkage.

: The material's affinity for water, which determines how well it captures detail in the presence of saliva or blood.

If you are preparing a text for a PDF on this subject, ensure you cover these technical aspects:

Elastic impression materials are essential for high-precision dental work, such as the fabrication of crowns, bridges, and partial dentures. They are generally classified into two main groups: :

: Highly accurate and hydrophilic (moisture-friendly), though they can be quite stiff when set. Key Properties to Include in a Document

: Known for high tear strength but have a long setting time and a strong odor. Silicones (C-Silicones and A-Silicones) :

: The most common material for study models. It sets via a chemical reaction and cannot be returned to a liquid state once set. Synthetic Elastomers :