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Properties of Dental Materials Quiz

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Questions and Answers

What is the main advantage of non-eugenol paste?

It has better dimensional stability

It has a faster setting time

It is more cost-effective

It is used for patients with eugenol allergy (correct)

What is the chemical reaction involved in the setting of non-eugenol paste?

Oxidation-reduction reaction

Acid-base reaction

Saponification (correct)

Chelation

What is the primary disadvantage of impression plaster?

It is rigid and can fracture easily (correct)

It has poor dimensional stability

It is expensive

It has a long setting time

What is the main reaction that occurs during the setting of impression plaster?

Crystallization Signup and view all the answers

What is the main reason impression waxes are no longer widely used?

They do not undergo any physical or chemical reaction Signup and view all the answers

Which of the following is a property of non-eugenol paste?

It is supplied as two separate pastes (base and catalyst) Signup and view all the answers

What is the primary advantage of impression plaster over other impression materials?

It is inexpensive and easy to use Signup and view all the answers

What is the main disadvantage of the exothermic reaction that occurs during the setting of impression plaster?

It can cause dryness in the patient's mouth Signup and view all the answers

What is the primary advantage of thermoplastic impression materials over non-thermoplastic materials?

They can record undercuts and fine details Signup and view all the answers

Which of the following statements about impression waxes is true?

They do not set by any physical or chemical reaction Signup and view all the answers