MEDICINE
RADIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
+65 degrees
|
|
-65 degrees
|
|
+75 degrees
|
|
+45 degrees
|
Detailed explanation-1: -The vertical angulation is directed approximately +65 degrees through a point near the bridge of the nose toward the center of the image receptor.
Detailed explanation-2: -State the vertical angulation used for the maxillary topographic occlusal projection: +65; between eyebrows and bridge of nose. State the vertical angulation used for maxillary lateral occlusal projection: +60; above corner of the eyebrow.
Detailed explanation-3: -4) Anterior maxillary: the central ray is passed through the tip of nose, keeping the angulation of +45 to the occlusal plane. (fig. 11). 5) Cross-sectional maxillary ( topographic maxillary): the central ray is passed through the bridge of nose, keeping the angulation of +65 to the occlusal plane.
Detailed explanation-4: -Topographic projection: The maxillary topographic occlusal projection is used to examine the palate and the anterior teeth of the maxilla. ii. Lateral (right or left) projection: The maxillary lateral occlusal projection is used to examine the palatal roots of the molar teeth.
Detailed explanation-5: -The maxillary lateral occlusal radiograph is made using a size 4 film/phosphor plate with the long axis parallel to the facial surfaces of the posterior teeth. The central ray (PID) is aimed with a vertical angle of +60 to +70 degrees and centered slightly inferior to the corner of the eye.