Ala Tragus Line Panoramic

Focal trough layer the area between the x ray source and the image receptor that will be imaged distinctly on the panoramic radiograph.

Ala tragus line panoramic. Ikfanson hing university of alabama scho. An imaginary plane or line from the orbital ridge to the acoustic. An imaginary plane or line from the ala of the nose. The roots of the anterior teeth are in the image and the posterior teeth are the same size on each.

This position is often referred to as the patient being positioned with the ala tragus line in a minus 50 position. At the same time this position allows the ala tragus line to be correctly positioned. The panelipse panorex i and panorex ii use the ala tragus line for patient positioning. Notice the panoramic image is divided into 9 areas that make up the 6 zones that you must learn to picture each panoramic radiograph or image in your mind s eye.

Tragus of the ear must be aligned with the plastic guides ala tragus line should be 50 from level positioning the patient position the patient panoramic lead apron must be used position apron high in front to protect the thyroid apron should be lower in back to expose the neck. Discussion most panoramic x ray machines use the ala tragus line for patient positioning whereas a few use the orbito meatal line. Ala tragus line is one of the common extra oral soft tissue land mark utilized in dental clinics for occlusal plane orientation. Here the occlusal plane should be mildly curved upward to make a smile like line.

The ala tragus line as a guide for orientation of the occlusal plane in complete dentures 1carole abi ghosn 2carla zogheib. The smile line will also be lost. An imaginary plane or line from the ala of the nose to the tragus of the ear. The part of a panoramic x ray machine where the cassette is positioned for exposure.

The angle between this line and the horizontal plane is 3on the panorex and 4on the. Focal trough layer that area between the x ray source and the image receptor that will be imaged distinctly on the panoramic. In other words the ala of the nose should be slightly inferior to the height of the tragus. These zones are as follows.

White philadelphia pennsylvania in addition to the ala tragus line uses an occlusal plane line on the cassette carrier for patient positioning. Pate b d s m s and l. The part of a panoramic x ray machine where the cassette is positioned for exposure. The horizontal plane in patient positioning for panoramic radiography j.

Important in determining the correct position of the patient s head. Exposure was 80 to 90 kv at 10 ma for 1 5 to 2 seconds in accordance with the subject s physical. The panorex i s. To achieve the correct vertical angulation the head must be positioned upright and symmetrical with the ala of the nose just inferior to the height of the tragus.

The cone film distance used was 5 feet. If the tragus is positioned above the tragus the hard palate will appear as a thick opaque horizontal opacity above over the apices of the maxillary anterior teeth and premolars. Download pdf 1mb sizes 0 downloads 9 views.