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Accuracy of six elastic impression materials used for complete-arch fixed partial dentures. 1976

J P Stauffer, and J M Meyer, and J N Nally

1. The accuracy of four types of impression materials used to make a complete-arch fixed partial denture was evaluated by visual comparison and indirect measurement methods. 2. None of the tested materials allows safe finishing of a complete-arch fixed partial denture on a cast poured from one single master impression. 3. All of the tested materials can be used for impressions for a complete-arch fixed partial denture provided it is not finished on one single cast. Errors can be avoided by making a new impression with the fitted castings in place. Assembly and soldering should be done on the second cast. 4. In making the master fixed partial denture for this study, inaccurate soldering was a problem that was overcome with the use of epoxy glue. Hence, soldering seems to be a major source of inaccuracy for every fixed partial denture.

UI MeSH Term Description Entries
D003760 Dental Impression Materials Substances used to create an impression, or negative reproduction, of the teeth and dental arches. These materials include dental plasters and cements, metallic oxide pastes, silicone base materials, or elastomeric materials. Dental Impression Material,Impression Material, Dental,Impression Materials, Dental,Material, Dental Impression,Materials, Dental Impression
D003779 Denture Design The plan, delineation, and location of actual structural elements of dentures. The design can relate to retainers, stress-breakers, occlusal rests, flanges, framework, lingual or palatal bars, reciprocal arms, etc. Denture Designs,Design, Denture,Designs, Denture
D003830 Denture, Partial, Fixed A partial denture attached to prepared natural teeth, roots, or implants by cementation. Fixed Bridge,Fixed Partial Denture,Pontic,Bridge, Fixed,Bridges, Fixed,Denture, Fixed Partial,Dentures, Fixed Partial,Fixed Bridges,Fixed Partial Dentures,Partial Denture, Fixed,Partial Dentures, Fixed,Pontics
D004548 Elasticity Resistance and recovery from distortion of shape.

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