Dental Impression Materials Quiz

What is the primary purpose of accurate impressions in dentistry?

• To reduce treatment time

• To design and construct prostheses

• To improve patient comfort

• To create decorative models

Which property must impression materials possess to adapt well to oral tissues?

• High viscosity

• Fluidity

• Low cost

• Dimensional instability

What type of impression material can revert to a previous state when heated?

• Alginate

• Agar

• Polysulfide

• Zinc Oxide-Eugenol

Which elastomeric impression material is known for its low dimensional change?

• Polyether

• Condensation Silicone

• Addition Silicone

• Polysulfide

What is the main advantage of using custom trays in dental impressions?

• They reduce material usage

• They are cheaper

• They are disposable

• They are easier to clean

What is a common cause of bubbles in elastomeric impressions?

• Using too much material

• Improper tray selection

• Air entrapment during mixing

• Incorrect mixing

Which of the following is a characteristic of irreversible hydrocolloids?

• They are used for detailed impressions

• They are flexible

• They set through a chemical reaction

• They can be reheated

What is the recommended setting time for alginate impressions?

• 10-15 minutes

• 30 minutes

• 1-2 minutes

• 3-6 minutes

Which impression material is known for its high tear strength?

• Alginate

• Polysulfide

• Addition Silicone

• Agar

What is the main disadvantage of using alginate for impressions?

• It is difficult to mix

• It has low dimensional stability

• It is too expensive

• It cannot capture fine details