Dentistry – Apparatus – Having absorption means or means to isolate tooth or mouth...
Patent
1988-03-24
1989-05-09
Peshock, Robert
Dentistry
Apparatus
Having absorption means or means to isolate tooth or mouth...
A61C 514
Patent
active
048284912
ABSTRACT:
A unitary preassembled disposable intra-oral rubber dam device comprises an annular resilient frame member such as a resilient plastic cord frame, and an elastic latex membrane, the perimeter of the membrane being secured to the frame member such that the membrane is maintained in substantially the same plane as the frame member. The annular frame member, having a predetermined configuration, has a memory characteristic such that when pressure applied to distort the frame member is relaxed the frame member returns to substantially its predetermined configuration.
REFERENCES:
patent: 3781994 (1974-01-01), Hesselgren
patent: 4600387 (1986-07-01), Ross
Aukland Group, Inc.
Peshock Robert
Smith, Jr. John C.
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