LECTURE 4: INTRAORAL RADIOGRAPHY Flashcards
radiographic procedures where the film is placed inside the mouth to make exposure or a radiograph
INTRAORAL RADIOGRAPHY
types of INTRAORAL RADIOGRAPHY
o periapical technique
o bitewing technique
o occlusal technique
PERIAPICAL TECHNIQUE
can be either?
o paralleling technique
o bisecting technique
PARALLELING TECHNIQUE
also known as?
o extension cone technique
o right angle technique
o long cone technique
True or false
film position in the mouth is parallel to the long axis of the tooth to be radiographed
True
True or false
central ray of x-ray beam is directed parallel to film and long axis of the tooth
False
central ray of x-ray beam is directed perpendicular to film and long axis of the tooth
True or false
keep the film parallel with the long axis of the tooth
True
True or false
central beam is perpendicular to the tooth and film; film parallel to the tooth
True
True or false
Paralleling instruments with an aiming ring is doesnt needed to achieve the parallel relationship.
False
Paralleling instruments with an aiming ring is needed to achieve the parallel relationship.
LONG TARGET FILM DISTANCE
INCHES?
16 INCHES
used with paralleling technique to compensate for the image magnification
LONG TARGET FILM DISTANCE
reason why this technique is also referred to as long cone technique
LONG TARGET FILM DISTANCE
long target-film distance produces image with less image magnification and increased definition
LONG TARGET FILM DISTANCE
reason why cone is 16 inches long
LONG TARGET FILM DISTANCE
PARALLELING TECHNIQUE
LONG TARGET FILM DISTANCE
ADVANTAGES:
→ produces images with dimensional accuracy
→ simple and easy to learn and use
→ can be accurately repeated (easier to standardize films)
→ head position is not critical