Lecture 10 (10/31)

Question 1

What is the shape of access for a maxillary first premolar?

Answer 1

Oval-shaped with buccal-palatal orientation

Question 2

What is the most common access mistake for a maxillary first premolar?

Answer 2

Leaving the pulpal roof

Question 3

What percentage of mandibular incisors have 2 canals?

Answer 3

40%

Question 4

Type IV canal shape is best described as:

Answer 4

One canal from the pulp chamber splits into two canals prior to the apex

Question 5

T/F: A #4 round bur should be used to access a mandibular lateral incisor

Answer 5

False

Question 6

T/F: The MB2 canal, found in maxillary first molars are found on a straight line between the MB1 and the palatal canals

Answer 6

False (found slightly mesial)

Question 7

What is the proper outline form for all mandibular molars?

Answer 7

Trapezoidal with the base wider towards the mesial

Question 8

Which canal of the mandibular molar are you likely to miss unless you use the proper access and search for the canal?

Answer 8

DL

Question 9

Which tooth is most likely to have a C-shaped canal?

Answer 9

Mandibular second molar

Question 10

What percentage of mandibular 1st molars have 4 canals?

Answer 10

30%