Plastic and nonmetallic article shaping or treating: processes – With step of cleaning – polishing – or preconditioning...
Patent
1989-09-21
1992-08-11
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With step of cleaning, polishing, or preconditioning...
264 16, 264338, 264340, 427 2, 427133, A61C 1600, B28B 736
Patent
active
051376644
ABSTRACT:
The invention relates to a process for the treatment of dental impressions of conventional molding material, in which the surface of the impressions is treated prior to filling with plaster with an aqueous solution which contains 0.01 to 10 % by weight of a fluorine compound. The detrimental effect which the surface-active substances adhering to the dental impressions have on the surface finish of the plaster models which are produced using the dental impressions is thus eliminated.
REFERENCES:
patent: 4076779 (1978-02-01), Skriletz
patent: 4810294 (1989-03-01), Yagi et al.
Ellrich Klaus
Gasser Oswald
ESPE Stiftung & Co. Produktions-und Vertriebs KG
Fiorilla Christopher A.
Silbaugh Jan H.
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