Dentistry – Apparatus – Work support
Patent
1995-04-12
1997-06-24
Lucchesi, Nicholas D.
Dentistry
Apparatus
Work support
433 60, 433 72, A61C 1100
Patent
active
056412851
ABSTRACT:
Disclosed are a method and apparatus for relating a model of a maxillary arch of a patient to a simulated axis of rotation of the condyle of the lower jaw of the patient. In carrying out the invention in one form, a pointer is positioned on a predetermined landmark of the upper jaw of a patient. A lateral image of the condyle and the pointer are obtained while the patient's two hamular notches and incisive papilla define a plane which, preferably, is substantially horizontal. From the image, vertical and front-to-back distances of the axis of rotation of the condyle relative to the landmark are then determined. A model of a maxillary arch of a patient is positioned such that the predetermined landmark is located with substantially the same vertical and front-to-back distances from a simulated axis of rotation of the patient's lower jaw. Finally, a model of the patient's lower jaw that rotates about the simulated axis is positioned to abut the model of the maxillary arch.
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Schwartz, Robert, D.D.S., "Standardization of Diagnostic Casts: Description of Technique," New York Journal of Dentistry, vol. 37, No. 9, pp. 327-336, Nov. 1967.
Brazga Charles E.
Lucchesi Nicholas D.
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