Most common reason for discolored crown is..

[MattBiggar80]

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endo questions..
perhaps some ppl can answer...
endo question:

i was doing a website that had some endo questions. perhaps you guys can help answer these. i put some answers below

Endo SDN questions
1. Most common reason for discoloration of the crown after RCT:
I understood the answer to be something with access opening and post???


11. what is the smallest file in ISO?
I believe the answer is:
0.06..


29.
a. during an access opening of max lateral incisor, you it the incisal edge. It is likely the perforation will be:

I believe the answer was:
Palatal
or
Buccal?




32. patient has advanced perio disease. How does this cause a problem during RCT for lower Man M1
a. makes it difficult for accessing the canals.

b. difficult to do preparation because of tooth mobility,
c. problem with anesthesia,
d. no answer is correct)

suggested answer is A


thanks..
more to come...