Maxillary first premolar Flashcards
1
Q
Initial calcification
A
18-21 months
2
Q
Crown completion
A
5-6 years
3
Q
Eruption
A
10-11 years
4
Q
Root completion
A
12-13 years
5
Q
A
-Buccal surface Maxillary first permolar
- 1 of the 2 cusps is buccal (larger of the 2)
- Buccal cusp resembles MC
6
Q
A
-Lingual Surface of maxillary 1st premolar
-Lingual cusp smaller than buccal
-Lingual cusp displaced mesially.
7
Q
A
-Mesial surface Maxillary 1st Premolar
-Longer mesial slope
- developmental groove between cusps
- Depression (Canine fossa) between roots reaching cervical margin.
8
Q
A
-Distal surface Maxillary 1st premolar
-Crown flattened mesio-distally and the cusps sit directly above the root
9
Q
Describe root
A
-M1P has 2 roots (buccal and lingual)
- Sometimes may be fused.
- May bend distally at apex.
- 2 root canals, 2 pulp horns
