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Chapter 46
terms
| Term | Definition |
|---|---|
| Agar | gelatin-type material derived from seaweed used as a thickener. |
| Alginate | irreversible hydrocolloid material used for taking preliminary impressions. |
| Base | foundation or the basic ingredient of a material |
| Boader Molding | process of using finger pressure to contour a closer adaptation of the margins of an impression while still in the mouth. |
| Catalyst | substance that modifies or increases the rate of a chemical reaction. |
| Centric | having an object centered, such as maxillary teeth centered over mandibular teeth in correct relation. |
| Colloid | suspension of particles in a dispersion medium such as water. Its two phases are sol and gel. |
| Digital Impressions | intraoral scan of a patient’s dentition and gingiva. |
| Elastomeric | material having elastic properties from rubber. |
| Hydro- | prefix meaning “water”. |
| Hysteretic | change in temperature that causes the reversible hydrocolloid material to transform from one physical state to another. |
| Imbibition | absorption of water, causing an object to swell. |
| Occlusal | reproduction of a patient’s bite with the use of wax or elastomeric material. |
| Syneresis | loss of water, causing something to shrink. |
| Tempering | bringing a material to a desired consistency. |
| Viscous | physical property of a fluid related to resistance to flow. |