irreversible

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Related to irreversible hydrocolloid: alginate

irreversible

1. Chem Physics capable of changing or producing a change in one direction only
2. Thermodynamics (of a change, process, etc.) occurring through a number of intermediate states that are not all in thermodynamic equilibrium
References in periodicals archive ?
Alginate is an elastic irreversible hydrocolloid widely used for recording the impressions of dentulous arches, impressions for making models for diagnostic purposes, and for duplication of casts.
Unlike most dental prosthetic materials, irreversible hydrocolloid is radiopaque and easily visible on radiography because of its calcium content.
Making an impression of both the expanded ear and the contours of the helix would require the impression to bend around the helix; hence, irreversible hydrocolloid or alginate is most commonly used when making an auricular impression [14].