Identification of Restorations, Dental Materials and Foreign Objects

Question 1

metallic restorations

Answer 1

absorb x-rays
very little radiation comes in contact with the receptor
appear completely radiopaque

Question 2

amalgam restorations

Answer 2

absorbs x-rays
radiopaque
variety of shapes and sizes

Question 3

one-surface amalgams

Answer 3

appears as distinct, small, round, or ovoid radiopacities
may appear on buccal, lingual or occlusal surfaces
including lingual of anterior teeth

Question 4

multi-surface amalgams

Answer 4

appear radiopaque
characterized by irregular outlines or borders
extends beyond occlusal surface to interproximal surface

Question 5

amalgam overhangs

Answer 5

extensions of amalgam seen beyond the crown portion of a tooth in the interproximal region
disrupts natural cleansing contours of the tooth
traps food and plaque
contributes to bone loss

Question 6

amalgam fragments

Answer 6

may be inadvertently embedded in adjacent soft tissue during restoration of a tooth
appear as dense radiopacities with irregular borders

Question 7

gold restorations

Answer 7

appear radiopaque and exhibit a smooth marginal outline

Question 8

gold crowns and bridges

Answer 8

appear as large radiopaque restorations with smooth contours and regular borders

Question 9

gold foil restorations

Answer 9

appear as small round radiopacities

Question 10

stainless steel

Answer 10

appear radiopaque, but not as densely radiopaque as amalgam or gold
outlines and margins appear smooth and regular
not as contoured at the cervical third
thin, do not absorb x-rays as much

Question 11

non-metallic restorations

Answer 11

may vary in appearance form radiolucent to slightly radiopaque, depending on the density of the material

Question 12

porcelain restorations

Answer 12

slightly radiopaque and resemble the radiodensity of dentin
a thin radiopaque line outlining the prepared tooth that represents cement may be evident through the slightly radiopaque porcelain crown

Question 13

composite restorations

Answer 13

vary in appearance depending on the composition of the composite material
radiographs and visual exam

Question 14

acrylic restorations

Answer 14

often used as an interim or temporary crown or filling
least dense of all nonmetallic restorations
appears radiolucent or barely visible on a dental image

Question 15

base materials

Answer 15

used as cavity liners placed on the floor of a cavity preparation to protect the pulp
appear radiopaque, less radiodense than amalgam

Question 16

metallic pins

Answer 16

used to enhance retention of amalgam or composite
appear as cylindrical or screw-shaped radiopacities

Question 17

gutta percha

Answer 17

claylike material used to fill pulp canals
appears radiopaque, similar to base materials
less radiodense than metallic restorations

Question 18

silver points

Answer 18

used to fill pulp canals
very radiopaque
like other metallic materials
more radiodense than gutta percha

Question 19

post and core

Answer 19

in endodontically treated teeth
gold
appear radiopaque on a dental image
core portion resembles the prepared portion of a tooth crown
post portion extends into the pulp canal

Question 20

materials used in prosthodontics

Answer 20

complete dentures: acrylic, metal pins
removable partial dentures: cast metal, combo of cast metal and acrylic, all acrylic
appears densely radiopaque where metal is present and slightly radiopaque in the areas of acrylic

Question 21

materials used in orthodontics

Answer 21

orthodontic bands, brackets, and wires may be observed on dental images
have a characteristic appearance

Question 22

materials used in oral surgery

Answer 22

suture wires, metallic splints and plates, bone screws, stabilizing arches are used in oral surg
implants… appearance varies based on shape and design

Question 23

fracture stabilization material

Answer 23

suture wires appear as thin radiopaque lines
metal splints, plates, screws, stabilizing arches also appear radiopaque

Question 24

bone grafts

Answer 24

ways to add bone material to areas that were deficient in quantity of hard tissue
volume of bone and must encourage osseointegration while withstanding occlusal forces