Self-opening preformed activator and positioner

Details Self-opening preformed activator and positioner Self-opening preformed activator and positioner

1988-04-11

1990-02-06

Peshock, Robert

Dentistry

Orthodontics

By mouthpiece-type retainer

A61C 700

Patent

active

048985350

ABSTRACT:
A removable orthodontic appliance is provided with a means for retaining the appliance within the user's mouth. The appliance has an upper and lower tooth receiving trough and the troughs are separate at an anterior end, but connect at a posterior end by a resilient hinge which biases the appliance into an open position with the two trough anterior ends urged apart. Such an appliance can be manufactured by slitting the appliance after molding, before it has cooled, to thermoset the hinge in an open position; slitting the appliance after it has cooled, reheating the hinge area and then thermosetting it in an open position; or molding the appliance in an open position.

REFERENCES:
patent: 3536069 (1970-10-01), Gores
patent: 3848335 (1974-01-01), Bergersen
patent: 3898736 (1975-08-01), Bergersen
patent: 3939598 (1975-01-01), Bergersen
patent: 3950851 (1976-04-01), Bergersen
patent: 4073061 (1978-02-01), Bergersen
patent: 4139944 (1979-02-01), Bergersen
patent: 4505672 (1985-03-01), Kurz

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