Quiz 12

Question 1

Tooth #4 is being prepared for a crown and is ready for a final impression. The Two Cord technique is being used as seen in the photo above. Which of the following is NOT a reason to use the Two Cord technique?

a) Reduction of bleeding

b) Adequate drying of tooth

c) Provides space for impression material in gingival sulcus

d) Adequate tissue retraction

e) All are reasons to use the Two Cord technique

Answer 1

E

Question 2

Teeth #9 and #10 are crowns placed approximately 1 year prior to the photo being taken. What is the most likely reason for the darkening at the gingival margin seen in the photo?

a) Use of Aluminum Chloride during impression taking

b) Use of Ferric Sulfate during impression taking

c) Metal margin showing from PFM crown design

d) Poor patient oral hygiene

Answer 2

B

Question 3

You have initially prepared this tooth for a crown. Your margins are subgingival. What strategies can you employ to get an adequate final impression for this case?

a) Send the patient home and re-appoint

b) Retraction cord

c) Retraction Paste

d) Laser

e) All answers are correct

Answer 3

E

Question 4

Based on the photo, which of the following techniques was likely used for gingival management for this crown preparation?

a) Laser

b) Rotory instrument

c) Electrosurge

d) Retraction Cord

Answer 4

B

Question 5

You are working to excavate and restore the Class 5 restoration today. Why would packing cord prior to beginning be a good idea?

a) Reduction in tissue damage

b) Vertical displacement of tissue for visibility

c) Reduction in sulcular fluid

d) Bleeding control

e) All of the above

Answer 5

E