#1
Which of the following materials is commonly used for direct dental restorations?
Composite resin
ExplanationCommonly used due to its aesthetic properties and ability to bond to tooth structure.
#2
What is the radiographic appearance of amalgam restorations?
Radiopaque
ExplanationAppears white on x-rays, aiding in identification.
#3
Which dental restorative material is least susceptible to secondary caries?
Ceramic
ExplanationInert and resistant to bacterial attack.
#4
What is the main radiographic characteristic of gutta-percha used in endodontic treatment?
Radiopaque
ExplanationFacilitates detection of root canal fillings.
#5
Which radiographic technique is commonly used to detect secondary caries around restorations?
Bitewing radiography
ExplanationProvides detailed views of the crowns and adjacent structures.
#6
What is the main advantage of glass ionomer cement as a restorative material?
Fluoride release
ExplanationHelps prevent secondary caries by releasing fluoride.
#7
Which radiographic technique is commonly used to evaluate the periapical region of a tooth?
Periapical radiography
ExplanationProvides detailed views of the tooth root and surrounding bone.
#8
Which dental restorative material is most susceptible to wear and fracture?
Composite resin
ExplanationLess durable than other materials, prone to wear and chipping.
#9
Which dental restorative material is known for its biocompatibility and natural appearance?
Ceramic
ExplanationProvides excellent aesthetics and compatibility with tissues.
#10
What is the primary radiographic characteristic of resin-based composite restorations?
Radiolucent
ExplanationAppear darker on x-rays, making them harder to distinguish.
#11
Which dental restorative material requires the highest cavity preparation retention form?
Ceramic
ExplanationRequires more extensive preparation for bonding.
#12
What is the main radiographic characteristic of porcelain-fused-to-metal crowns?
Radiopaque
ExplanationVisible on x-rays due to metal substructure.