Radiology Flashcards
Periapical Radiograph should record the?
Crown, Root and periodical area. Shows 2-3mm periapical area
The Definition of Radiolucent is
Dark or Black area on the radiograph
Radiolucent could be seen as
Air, Soft Tissue, Pulp Canal, areas of Bone Loss
The Definition of Radiopaque is
Light or White area on the radiograph
Radiopaque could be seen as
Enamel, Dentin, Metal Restorations Endo fillings, Bone
Two Types of Radiographs
Intraoral and Extraoral
What are the two reasons for Bitewings?
Alveolar Crest Bone Level, and proximal Caries
Extraoral Bitewing
New Technique: one image for each side of jaw, uses PAN- Therefore extra oral imaging. Records periodical areas
Topographical shows
wide coverage of bone pointing towards note
Cross Sectional shows
Buccal or lingual localization
What is the line that represents an imaginary center of x-ray beam?
Central Ray
Supernumerary is
An extra tooth
Why is intraoral preferred over Extraoral?
A structure or lesion can be recorded entirely on intraoral
Why do we use extraoral?
Disease can’t be covered by intraoral so we use extraoral
Trismus means
Inability to open mouth
Periapical or Bitewing radiographs provide the maximum _________
Detail
When area to be radiographed is larger than can be covered we use ________________
Extraoral Radiograph
Why do we use extra oral radiography?
Disease is located in an area not normally covered by intraoral films, also used for patients who gags on intraoral film
Focal Trough
Grey shaded area or area of focus
The pan records:
Unobstructed, panoramic records of entire mandible, maxilla and associated structures on single radiograph
The pan is the most ______________ extra oral radiograph in dentistry
common
Cephalometric is used to
measure and assess growth
Cephalometric has a fixed ___________ to ___________ Distance of ______in
Source to film distance of 60 in.
Cephalometric Radiography has
the most standardized and reproducible views