Radiography Video: Posterior Periapical Assignment Due on September 21 at 9am to
ID: 138727 • Letter: R
Question
Radiography Video: Posterior Periapical Assignment Due on September 21 at 9am to the department lock box or anytime before to Cluk's class. 1. What do you do with the images from the previous session (that are on your monitor when you open your file) before you begin this session? 2. For posterior periapicals, what should be the orientation of the collimator? 3. Where is the front edge of the sensor placed for a premolar periapical? 4. Where is the front edge of the sensor placed for a molar periapical? 5. What is different about the biteblock of the XCP for the posterior periapicals as compared to the biteblock of the anterior periapicals? On the XCP aiming ring what do we use the indentations or square shape cut out for? Where is the elbow or bend in the XCP aiming arm oriented when you expose a 6. 7. maxillary right (1st quadrant) premolar periapical? How close should the XCP aiming device be in relation to the patient's face? 9. When are you permitted to expose a retake during practice radiography sessions? 10. List four items that were on the posterior periapical tray set-up. 8.Explanation / Answer
2.For periapical radiographs in the posterior areas, imaging teeth of the maxilla and mandible from the cuspids back, size #2 films are used. These are positioned in a horizontal orientation . For posterior periapical, collimator orientation should be towards the crown of teeth.
3. For premolar periapical, front edge should be placed in alignment of midline of the Mandibular canine.
4. For molar periapical, front edge should be place in alignment with the midline of the Mandibular second premolar.
5. The receptor used for anterior region is of size 1 and placed in vertical position in biteblock.
The receptor used for posterior region is of size 2 and placed in horizontal position in biteblock
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