Dentistry – Apparatus – Having means to record or indicate jaw movement or position...
Patent
1997-01-15
1999-09-21
Lewis, Ralph A.
Dentistry
Apparatus
Having means to record or indicate jaw movement or position...
433140, A61C 900
Patent
active
059545038
ABSTRACT:
A dental device for insertion in a patient's mouth generally between the patient's upper and lower teeth for cooperating and positioning the mandible and the maxilla in centric relation. The dental device includes a centric bite assembly including a bite portion which is insertable between the patient's upper and lower anterior teeth and an impression support assembly connected to and extending a predetermined perpendicular distance away from the centric bite assembly. The dental device also may be used for relieving muscle trismus and pain caused by muscles and diagnosing temporal mandibular joint problems by having the patient bite down on the bite portion tending to position the mandibular and the maxilla in centric relation.
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Evaluation, Diagnosis, and Treatment of Occlusal Problems, by Peter Dawson, Second Edition, Copyright 1989, pp. 36, 37, 41, 42, 43, 44, 45, 46, 47, 168, 169, 170, 171, 172, 189, 190, 191, 192, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237.
Exhibit A is a photograph of a leaf gage which has been used by dentists in the past for attempting to position the maxilla and the mandible in centric relation.
Exhibit B is a photograph of a device having two different hardness of wax also has been used in the past in an attempt to establish centric relation between the maxilla and the mandible.
Exhibit C is a photograph of a Lucia Jig which was a cap-like structure which was fitted over the upper and lower anterior teeth.
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