Dental radiographic apparatus for photographing entire jaws

Details Dental radiographic apparatus for photographing entire jaws Dental radiographic apparatus for photographing entire jaws

1985-01-18

1986-07-08

Smith, Alfred E.

X-ray or gamma ray systems or devices

Specific application

Dental panoramic

378 40, 378 98, A61B 614, G03B 4202

Patent

active

045997390

ABSTRACT:
A radiographic apparatus for photographing the entire jaws designed to make a tomogram of a curved plane approximate to a dental arch by the locus of center of rotation of the X-ray beam projected from an X-ray source onto an X-ray film holder describing an approximately V-shaped envelope which forms an apex on an approximate medial line and recedes from the apex toward the left and right of the approximate medial line by moving a rotary arm around a patient, the arm having the X-ray source at one end and the X-ray film holder at the other end thereof, wherein the apparatus comprises a means for changing straight-line distance on the approximate medial line between the apex and receding point of limit of the envelope and a means for indicating the distance of shift thus changed or a means for automatically moving the indication means a distance equal to the distance of shift.

REFERENCES:
patent: 3737660 (1973-06-01), Ando et al.
patent: 4039837 (1977-08-01), Ohta et al.
patent: 4263513 (1981-04-01), Palluet

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