Lecture 7: Mandibular Premolars Flashcards
Mandibular 1st Premolar Is the crown of this tooth broader MD or FL?
faciolingually
Mandibular 1st Premolar Is the root of this tooth broader MD or FL?
faciolingually
Mandibular 1st Premolar How many roots and how many canals does this tooth have?
1 root, 1 canal
What is the Universal notation for this tooth?
28
Name the following structures a and b
A: buccal triangular ridge
B: lingual triangular ridge
Mandibular 1st Premolar Which one is the mesial view?
A: mesial
B: distal
Mandibular 1st Premolar What are the differences M and D views?
Distal marginal ridge is higher abouve CEJ than mesial marginal ridge, broader distal contact area than mesial, root is more convex on distal, less cervical curvature on distal
Mandibular 1st Premolar What is the geometric outline (mesial)?
rhomboidal
Mandibular 2nd Premolar Is the crown of this tooth broader MD or FL?
Broader faciolingually
Mandibular 2nd Premolar Is the root of this tooth broader MD or FL?
Broader faciolingually
Mandibular 2nd Premolar How many cusps does this tooth have (what are their names)?
2- lingual and buccal cusps
3- Buccal > Mesiolingual > distolingual
Mandibular 2nd Premolar How many roots and how many canals does this tooth have?
1 root, 1 canal
Mandibular 2ndPremolar What is the name of the groove found on the L side?
Lingual groove
Mandibular 2ndPremolar What are the 3 different groove patterns on the occlusal surface of this tooth?
U, H, and Y shaped groove pattern
Mandibular 2ndPremolar Which one of groove pattern is the most common?
Y shape from 3 cusp type; H shape for 2 cusp type
Which one is the Mandibular 1st and which the 2nd Premolar?
A: 2nd Mand. Premolar
B: 1st Mand. Premolar
What are the differences between Mandibular 1st and 2nd Premolars?
1st is smaller, has a mesiolingual groove, mesiobuccal cusp is shorter than distobuccal cusp; 2nd can have 2 or 3 cusps, larger than 1st, no mesiolingual groove
