Exam Chapter 22 & 23
Clear film/absence of image
A film not exposed to radiation results in ____
8 minutes
A general rule of thumb is to fix ___ as the developing time.
The purchase of duplicating film and a duplicating machine
Duplication of a radiograph requires ____
Perpendicular
In the bisecting angle exposure technique the central beam must be ___
Underexposed flim
Light film image is a result of ____
Blurred images
Movement of the patients heas or the tube head will result in ___
Entire dental arch
Occlusal radiographs may be taken to view ___
Parallel to the long axis of the teeth
Paralleling technique the film packet must be ____
Expensive equipment, extra time required to be proficient, sensors thicker, costly updates, viruses, infection control
What are disadvantages of digital radiograph?
Intensifying screens
What etxraoral cassettes lined with?
Head measurement, patients skeletal structure and profile
What is a cephalometric radiograph show?
Charge-coupled device (CCD)
What is one of the most widely used image receptors in the dental digital radiology?
Determine the number and size of x-ray film to be used
What observations should be made in a child's mouth before placing films?
Maxillary upright, mandibular upright
What position should the patient be placed for a bite-wing radiograph?
Elongation
What technique error is caused by not having enough angulation?
The x-ray bean missed part of the film causing the film to be only partially exposed
Whats cone-cutting?
Entire tooth and surrounding area
Whats would periapical radiograph show?
Orthodontist
Which dental specialty uses the cephalometric radiograph?
Computer 200, humsn eye 32 shades
Shades of gray computer display? Human eye?
Foreshortening
The technique error caused by having too much angulation is ___