1. [Transverse dimensional stability of whole jaw models of different materials].
- Author
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Dumfahrt H, Schäffer H, and Roider K
- Subjects
- Materials Testing, Calcium Sulfate, Epoxy Resins, Models, Dental, Polyurethanes
- Abstract
Whole jaw models of 6 different materials were examined for their transverse dimensional stability. Under standardized conditions impressions were made of a mandibular phantom with 4 stylized crown stumps using the double mix-spray technique with additively cross-linking silicon. Of these, test models were prepared and measured using the original model as reference. The high-strength dental stones Die Keen and Fuji Rock showed the highest dimensional stability. On account of their shrinkage during polymerization, the epoxy resins Blue Star E and Metapox as well as Blue Star P, a polyurethane, were found to have smaller transverse stump interspaces. Data for electroplated silver models were between those for dental stones and plastic materials.
- Published
- 1989