Radiographic Detection of Caries, Period, and Dental Materials Flashcards
What type of caries are difficult to identify clinically?
Interproximal
What percentage of demineralization appears as radiolucent/dark on an x-ray?
30-40% demineralization
Can radiographs differentiate between active and arrested caries?
No
Can radiographs accurately detect depth of the lesion?
No
Is the depth of the lesion often greater or smaller than what is shown of the radiograph?
Often greater
Where is an incident carie located?
In the enamel
Where is a moderate carie located?
Halfway through the enamel
Where is an advanced carie located?
To the dentin
What type of incorrect angulation causes overlap in x-rays?
Incorrect horizontal angulation
What is a cervical burnout?
Radiolucency found just below the CEJ, decreased x-ray absorption in these areas
Can you differentiate between buccal and lingual caries in 2D radiographs?
No
What patients may have root caries?
Those with peril or gingival recession
Is the enamel or cementum harder?
Enamel
What is rampant caries?
Rapid caries progression, seen in young kids with poor oral hygiene
What is the primary diagnostic image to take to detect periodontal disease?
Bitewings
What can bitewings accurately depict the distance between?
CEJ and crest
Early stage 1 periodontitis is…
Bone loss up to 15% of root length
Stage 2 periodontitis/moderate is…
Bone loss between 15% and 33% of the root length
Stage 3 and 4 periodontitis is…
Bone loss extending to middle third of root and beyond
What does horizontal bone loss look like?
- Parallel, joins CEJ’s of adjacent teeth
- More than 2mm apical to CEJ
What does vertical bone loss look like?
Not parallel, V shaped
What is an interdental crater?
2 walled depression in bone
Is amalgam radiopaque or radiolucent?
Radiopaque