Processing and Mounting
Manual processing requires 5 steps, list them.
Developer → rinse → fixer → wash → dry.
What do panoramic radiographs allow the dentist to view?
Full mouth view, eruption patterns, impacted teeth, and supernumerary teeth.
How much less radiation can patients expect with digital?
50-90% less
Describe the difference between lingual and labial mounting. Which one do we use?
Labial mounting: mount as you would be looking directly at the patient, dot would be convex. Dot would be concave in lingual view.
Mount with sinus on max, mandible on mand.
What special equipment is used in extra-oral films?
Pan, Cethometric, or CBCT machine
What is the difference between direct digital and indirect digital imaging?
Direct goes right to the computer and uses a sensor.
Indirect uses a receptor, you need a processor and a computer.
List the anatomical landmarks used when mounting films.
Max sinus, incisive foramen, mental foramen, max tuberosity, ramus
Why would a ghost image appear? Why would no image appear?
Ghost: metallic objects
No image: thyroid collar in the way
What equipment is needed for direct digital and indirect digital imaging?
Direct: computer and sensor
Indirect: receptor, processor, and computer
Why do you need to know landmarks when mounting films?
Helps you orientate x-rays so you can mount correctly if teeth have no decay or cavities.
What would cause a big exaggerated frown or smile?
Frown: chin too HIGH
Smile: chin too LOW
Discuss the difference between interpretation and diagnosis.
CDA can interpret, read, and mount x-rays. Only the dentist can diagnose an x-ray.
What would cause a blurred image, or the appearance of the cervical spine?
Blurred: pt. out of limit of focal trough
Cervical spine: pt. must stand tall