IDing restorations, dental materials and foreign objects Flashcards
1
Q
7 types of restorations
A
- amalgam restorations
- gold restorations
- stainless steel and chrome crowns
- post and core restorations
- porcelain restorations
- composite restorations
- acrylic restorations
2
Q
identifying metal restorations
A
- metal absorbs x rays
- very little radiation comes in contact with the film
- that area of film remains unexposed, and the metallic restorations appear completely radiopaque on a dental radiograph
3
Q
identifying nonmetallic restorations
A
- nonmetallic restorations (composites, porcelain, acrylic) may vary in radiographic appearance from radiolucent to slightly radiopaque, depending on the density of the material
- porcelain is the most dense (least radiolucent), acrylic is the lease dense (most radiolucent)
4
Q
what are 3 types of amalgam restorations?
A
- one-surface amalgam restorations
- amalgam overhands
- amalgam fragments
5
Q
what are one-surface amalgam restorations?
A
- appear as distinct, small, round or void radiopacities
- may be seen on buccal, lingual or occlusal surfaces
- larger two-surface and multi surface restorations also appear radiopaque and are characterized by irregular outlines or borders
6
Q
what are amalgam overhangs?
A
- extensions of amalgam seen beyond the crown portion of a tooth in the inter proximal region
- disrupts natural cleansing contours of the tooth, traps food and plaque, and contributes to bone loss
7
Q
what are amalgam fragments?
A
- fragments of amalgam may be inadvertently embedded in adjacent soft tissue during restoration of a tooth
- appear as dense radiopacities with irregular borders
8
Q
god restorations in radiographs
A
- appear completely radiopaque and, unlike amalgam restorations, exhibit a smooth marginal outline
- gold crowns and bridges appear as large radiopaque restorations with smooth contours and regular borders
- gold foil restorations appear as small round radiopacities
9
Q
stainless steel and chrome crowns in radiographs
A
- appear radiopaque but not as densely radiopaque as amalgam or gold
- outlines and margins appear smooth and regular
- some areas may appear “see-through” on a radiograph
10
Q
post and core restorations in radiographs
A
- can be seen in endodontically treated teeth
- appears radiopaque on a dental radiograph
- the core portion resembles the prepared portion of a tooth crown, and the post portion extends into the pulp canal
11
Q
porcelain restorations on radiographs
A
- appearance is slightly radiopaque and resembles the radiopacity of dentin
