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Chapter 46 key terms

Impression material

TermDefinition
Agar Gelatin-type material derived from seaweed
Alginate Irreversible hydrocolloid material used for taking preliminary impressions
Base Foundation or basic ingredient of material
Border 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 A suspension of particles in a dispersion medium such as water. It’s two phases are sol and gel
Elastomeric Material having elastic properties from rubber
Hydro Prefix meaning water
Hysteresis A 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 registration 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, Viscosity Physical property of fluid related to resistance to flow
Created by: Deegodwin
 

 



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