Types of Radiographs and Film Holders Flashcards
What are 2 examples of extraoral radiographs?
- ) Panoramic (Pan)
2. ) Cephalometric (Ceph)
Film packets come in what sizes?
0-4
Children under 6 years old, should have what size film packets used for anterior/posterior, bitewing, and occlusal radiographs?
Anterior/Posterior: Size 0 or 1
Bitewing: Size 0
Occlusal: Size 2
Children 6-12 years old, should have what size film packets used for anterior/posterior, bitewing, and occlusal radiographs?
Posterior: 0 or 2
Anterior: 0 or 1
Bitewing: 2
Occlusal: 2
Adults should have what size film packets used for posterior periapicals, anterior periapicals when paralelling, anterior periapicals when bisecting, bitewings, and occlusals?
Posterior Periapical: 2 Anterior Periapical (Paralelling): 1 or 2 Anterior Periapical (Bisecting): 2 Bitewing: 2 or 3 Occlusal: 4
What letter film speed is the fastest and has the shortest wave length?
F-Speed
F-Speed can reduce patient exposure by what percentage?
60%
What are 4 examples of film holders?
- ) Snap-A-Ray (Bite block device)
- ) Hemostat
- ) Uni-Bite
- ) Endo-ray II
Name 2 times you may use a hemostat film holder.
- ) Endodontic radiographs
2. ) When there is limited space
Name 3 times you may use a Uni-Bite film holder.
When taking radiographs of:
- ) Anterior
- ) Posterior
- ) Bitewings with paralleling
What is the XCP used for?
Designed for use with paralleling and bisecting techniques.
What 3 things does the XCP consist of?
- ) Bite blocks
- ) Extension rods
- ) Locator ring
What is the purpose of the locator ring in the XCP?
Helps align PID with film in the patients mouth.
When used properly, what can the XCP reduce?
Cone cutting.
Stable bite blocks are disposable. What are 2 reasons for using them?
- ) For periapical exposures of the anterior and posterior areas of the oral cavity
- ) For either paralleling or bisecting
What 2 things are bitewing tabs made of?
- ) Paper loops
2. ) Adhesive tabs
What is the purpose for using bitewing tabs?
To stabilize interproximal bitewing films during exposure. These are helpful with children or patients with small mouths, or excess tori.
What is a cassette?
A light tight envelope or metal frame which surrounds an extraoral film.
What is the purpose of the black paper wrapping on an X-ray film packet?
Protect the film from light exposure.
What are the 2 purposes of the lead foil sheet?
- ) Shields film from scatter radiation
2. ) Reduces film fogging
What is the double ended film holder that is used for anterior teeth?
Eezee-Grip
The ADA classifies intraoral films by a number that combines what 2 things?
- ) The type of film
2. ) The size of the film
Periapical films classifications are generically represented by _______, where x is what?
1.x, and x is the size of the film
Bitewing film classifications are generically represented by ______, where is w is what?
2.x, and x is the size of the film
There is one type of standard occlusal film. What is the size represented as?
3.4
What area of the tooth is the periapical film used to capture? There are 3 areas.
- ) Apical or top area of the tooth
- ) Nearby bone structures
- ) Crown
Periapical films come in 3 sizes. One size is for children, and 2 sizes are used for adults. Name the sizes used for each person, and corresponding areas of the mouth that they are used for.
- ) Size 0 is used for children, posterior and anterior
2. ) Size 1 and 2 are used for adults. Size 1 is used for anterior, and size 2 is used for posterior.
Films come in sizes 1-4. What size is usually used for an occlusal film? What size can also be used.
Size 3 is usually used, but size 4 can also be used.
What size film is used for both bitewings and vertical bitewings?
Size 2
What are the 3 types of intraoral radiographs?
- ) Bitewing
- ) Periapical
- ) Occlusal
During a periapical X-ray, the entire tooth and root should be captured. How many millimeters of the periapical bone should be recorded?
At least 2mm
What does CMX stand for?
Complete-Mouth
