Mandibular Molars Flashcards
How many developmental lobes does a mandibular 1st molar have?
5 lobes
From which proximal view is only one root visible on the mandibular molar?
a. Why?
Mesial
How many triangular ridges and transverse ridges does a mandibular 1st molar have?
a. How many does a mandibular 2nd molar?
Ridges
a. 1st – 5 triangular ridges and no transverse ridges
b. 2nd – 4 triangular ridges and 2 transverse ridges
Which of the three mandibular molars is the most symmetrical?
2nd
What are the relative cusp sizes, from largest to smallest, of a mandibular 1st molar?
MB> ML = DL > DB > D
Is the root length of a mandibular molar longer on the facial or lingual?
Lingual
From a proximal view, with the mandibular molars in their normal inclination in the mouth where is the position of the facial cusp tips relative to the root apices?
a. What about the lingual cusp tips?
Facial in line with roots
a. Lingual – outside root apices
Which proximal surface of a mandibular 1st molar has a broader contact area?
Distal
Two buccal grooves might possibly be found on which molar?
1st – MB and DB
From which proximal view is more of the facial surface visible in a mandibular molar?
Distal
Is the facial embrasure between the mandibular 1st and 2nd molar wider or narrower than the lingual embrasure?
Narrower
How many root canals would a typical mandibular molar 1st molar have?
a. How about a mandibular 2nd?
3
a. 3
From a proximal view is the distal cusp of a mandibular 1st molar not visible?
Mesial
Which of the three mandibular molars is the occlusal table smallest, relative to the occlusal outline?
3rd
Where is the mesial HOC located in a mandibular molar?
a. Distal HOC?
Junction of O – M
a. Middle 1/3
