Anatomical intra-orally moldable dental impression tray and...

Details Anatomical intra-orally moldable dental impression tray and... Anatomical intra-orally moldable dental impression tray and...

A - Human Necessities

61

C

83/8

A61C 9/00 (2006.01)

Patent

CA 1124556

ABSTRACT A dental impression tray is disclosed which comprises a sheet of thermoplastic material which can be molded when heated to a temperature above the temperature encountered in the oral cavity of which an impression is to be made. The sheet has a U-shaped trough adapted to engage an alveolar ridge and a palatal vault engaging section extending from and supported within the trough. The vault section has a pleat extending away from the vault engaging side, whereby the tray may be heated exteriorly of the oral cavity, placed into position relative to the oral section for which an impression is to be made and manually molded to approximate intimacy with that oral section before the tray cools to form a rigid final impression tray which is self-supporting. The pleat allows the lateral separation of the opposed trough sides to be adjusted to accommodate differnt oral cavity widths without interfering with the fit of the tray vault section against the palate and aids in preventing the tray from reverting back to its premolded shape.

374901

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