Monthly Archives: January 2009

Film: 8 x10 inches Position of Patient Place the patient in a lateral position, either recumbent or seated, so that the head can be adjusted at a longitudinal angle of 30 degrees to the plane of the film. Position of part Center a point ½ inch anterior to the EAM to the cassette and adjust the patient’s head in lateral position resting on the parietal region. Adjust the head so the MSP forms an angle of 30 degrees, open caudally, to the plane of the film. Central Ray Direct the central ray perpendicular to the midpoint of the film. It Click Here To Read More

Panoramic tomography, pantomography and rotational tomography – Are terms used to designate the technique employed to make tomograms of curved surfaces. – Provides a panoramic view of the entire mandible, including the TMJ, and of both dental arches. Two types of equipment: 1. The patient and the film are rotated before a stationary tube. Consist: a. Specially designed chair mounted on a turntable. b. A second turntable to support a 4 x 10 in film enclosed in a flexible cassette. 2. The x-ray tube and the film rotate in the same direction about the seated and immobilized patient.

Film: 8 x 10” lengthwise In the tomography of the TMJs in the closed- and open- mouth positions, it must be remembered that in closed – mouth position the patient must occlude the posterior teeth rather than the incisors.In the open- mouth position, the mouth should be opened as wide as possible but not with the mandible protruded. Position of Patient Place the patient in the supine or seated- erect position. Position of Part Center the cassette to the midsagittal plane of the patient’s neck at a point directly below the TMJs. Adjust the head so that the midsagittal plane Click Here To Read More