An experimental study on the influence of the derived casts on the accuracy of different recording materials. Part I: Plaster, impression compound, and wax.
An experimental study was conducted to analyze the accuracy of transferring jaw relations with recording materials and the derived casts. A specific measuring system was designed to determine three-dimensional deviations of the condyles of an articulator. Four interocclusal recording materials were analyzed after various storage periods. The results indicated that the accuracy of the derived cast had a critical influence on the accuracy of the transferred jaw relations. None of the materials were reliable; the most accurate material generated deviations of approximately 300 microns.
Müller
J
J
University of Munich, Faculty of Dentistry, West Germany.
Götz
G
G
Hörz
W
W
Kraft
E
E
D000704:Analysis of Variance; D002133:Calcium Sulfate; D003725:Dental Articulators; D003748:Dental Equipment; D003760:Dental Impression Materials; D005069:Evaluation Studies as Topic; D006801:Humans; D007283:Inlay Casting Wax; D007574:Jaw Relation Record; D008422:Materials Testing; D003765:Models, Dental; D015999:Multivariate Analysis; D013997:Time Factors; D015035:Zinc Oxide-Eugenol Cement
D003760:Dental Impression Materials; D015035:Zinc Oxide-Eugenol Cement; D007283:Inlay Casting Wax; D002133:Calcium Sulfate