Dentistry – Apparatus – Having static product shaping surface
Patent
1983-04-26
1985-07-23
Peshock, Robert
Dentistry
Apparatus
Having static product shaping surface
A61C 900
Patent
active
045306621
ABSTRACT:
An impression tray for dental purposes has a shovel-like blade provided on its inside with layer forming attachments for a semi-liquid or plastic impression material which is put onto the tray when it is pressed against the lower or upper jaw for taking an impression. The layer is of uniformly distributed threads with closely-lying attachment points on the inside of the tray, the threads having a stiffness such that they can penetrate into the semi-liquid or plastic impression material when the tray with the material is pressed against the respective jaw for the purpose of the layer being incorporated as effective anchoring means in the bottom layer of the impression material when the material has solidified and the tray is to be jerked loose. The threads are in the form of a non-woven fabric and are bonded to each other at their contact points.
REFERENCES:
patent: 3534475 (1970-10-01), Hilaire
Andersson Bror A. E.
Lindblom Ragnvald E.
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