PubMed · 297618
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P La Corte. [Model preparation].. https://pubmed.ncbi.nlm.nih.gov/297618/
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An accurate cost analysis of the use of one of the new synthetic casting materials (Cellacast) compared with plaster-of-Paris (Gypsona) was undertaken over a 3-month period in the fracture clinic of Cardiff Royal Infirmary. The mean duration of usage before failure for synthetic forearm, scaphoid and below-knee casts was found to be approximately twice that of plaster casts. The use of synthetic casting materials was found to be cost-effective in situations where there was thought to be a high probability that structural failure of the cast would occur. Guidelines for the use of plaster-of-Paris and synthetic casting materials are presented.
This study determined the effect of a disinfectant solution on dental casts. Stone samples were immersed in a disinfectant solution and in control solutions. The results indicate that a saturated calcium sulfate (clear slurry) solution with 0.525% sodium hypochlorite was an effective disinfectant and acted without damage to the dental cast.
The relieved portion of a master cast below the major connector of a cast removable partial denture framework can be filled with dental stone to act as a third point of reference when the framework is reseated in an altered cast procedure. With this simple procedure, an index is formed that will allow accurate repositioning of the metal framework on the altered cast.