FREE AND STUDY GAMES ABOUT CH46 EXAM QUESTIONS

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FREE AND STUDY GAMES ABOUT CH46 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -43 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Which material is the most durable for occlusal bite registrations?

Answer:

Zinc oxide-eugenol (ZOE) Question 2: What position should the EFDA use while taking mandibular and maxillary impressions?

Answer:

Operator Question 3: Which impression material is used when an extremely accurate final impression is essential?

Answer:

Elastomeric Question 4: An impression is a positive reproduction of teeth and surrounding oral tissues. The model created from the impression is a negative reproduction of the structures.

Answer:

The first statement is incorrect; the second statement is correct.

Question 5: Which material is one of the most popular impression materials used for bite registration?

Answer:

Polysiloxane Question 6: Which material should be used if a more durable impression material is needed for bite registration?

Answer:

Zinc oxide-eugenol (ZOE) Question 7: What does the term syneresis mean as it relates to alginate impression?

Answer:

Water evaporates from the impression.Question 8: Which of the following classifications of impression materials can also be referred to as (bite) registration?

Answer:

Occlusal Question 9: What are the three classifications of impressions used in dentistry?

Answer:

Preliminary, final, and occlusal, or bite registration

Question 10: Where should alginate and elastomer impressions be disinfected?

Answer:

Before leaving the treatment area Question 11: Which factor should be examined when evaluating the quality of an alginate impression?

Answer:

The presence of the retromolar area and maxillary tuberosity are recorded.Anatomical detail is sharp and not distorted.Surfaces are free from voids.

All of the above are factors.

Question 12: How will a water temperature of 80° F (26.6°

• affect an alginate mix?

Answer:

It will make the mix set faster.

Question 13: What is the purpose of the calcium sulfate in impression alginate?

Answer:

It reacts with potassium alginate to form the gel.Question 14: Which of the following is an acceptable method for altering the setting time of alginate irreversible hydrocolloid impression material?

Answer:

Change the water temperature.Question 15: Which type of reversible hydrocolloid material is the most viscous?

Answer:

Tray Question 16: The retromolar area, lingual frenum, and mylohyoid ridge are reproduced in a mandibular impression. The tuberosity, labial frenum, tongue space, and incisive papilla are reproduced in a maxillary impression.

Answer:

The first statement is correct; the second statement is incorrect.Question 17: Which instructions would be given to a patient obtaining a bite registration?

Answer:

Close normally and gently.Question 18: Which listed criteria would not be acceptable on an alginate impression?

Answer:

Void of frena and tuberosities Question 19: Which of the four types of elastomeric materials has the best dimensional stability?

Answer:

Polysiloxane

Question 20: How are elastomeric impression materials mixed?

Answer:

With a paper pad and spatula

With an Automix system Question 21: How is a stock impression tray prepared for an elastomeric impression?

Answer:

Coated with adhesive Question 22: How should alginate material be loaded into a maxillary impression tray?

Answer:

Heavier in the anterior and labial areas

Question 23: Which type of elastomeric material has the highest viscosity?

Answer:

Putty Question 24: What percent relative humidity is preferred for storing impressions?

Answer:

100 Question 25: Why would utility wax be placed on the hard palate area of a maxillary impression tray?

Answer:

To modify the impression tray to accommodate a high palatal vault Question 26: Impression trays are rigid for all of the following reasons except to

Answer:

warp the completed impression.

Question 27: What are the three curing stages of impression materials?

Answer:

Initial set, final set, final cure