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Related Flashcards
Cards In This Set
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What does ALARA stand for?
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As low as reasonably achievable
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Who benefits from Dental X Rays?
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Practitioners
Patients
Insurance Companies
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What are X Rays used for?
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Periodontal Disease
Missing Teeth
Trama
Decay
Evaluate Growth
Document Current Conditions
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Periapical
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Is the tissue surrounding the apex of the tooth
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Radiopaque *Radio-Pack*
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Not transparent to xrays or other forms of radiation
Light/White areas
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Radiolucent
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Permitting the passage of x rays
~Dark Areas
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Density
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The overall darkness of the xray picture
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Contrast
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The level of difference between the black, white and grey areas of the film.
High contrast= very few shades of black and white
Low contrast=many shades of grey between black and white.
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Subject to contrast
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The result of differences in absorption of the x ray by tissues
The PT
The kVp
The scatter radiation
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Overexposure
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The act of exposing film to too much light or for too long a time
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Underexposure
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The act of exposing film to too little light or for too short a time
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Film contrast
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Contrast that comes from the characteristics of the film and processing film type
exposure
processing
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Criteria for diagnostic intraoral x-rays
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1.the xray should show proper definition and detail and degree of density and contrast so that all structures can be easily delineated
2.The structures should not be distorted by elongation or foreshortening
3.Interproximal surfaces should be seen w/o overlapping when able
4.The xray beam should be centered on the film so that cone cuts do not leave any area of the film unexposed
5. The film should not be cracked or bent
6. The film should be processed correctly
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Foreshortening
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Excessive vertical angulation
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Elongation
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Insufficient vertical angulation
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