Lecture 6: Maxillary Premolars

Question 1

Maxillary 1st Premolar Is the crown of this tooth broader MD or BL?

Answer 1

buccolingually

Question 2

Maxillary 1st Premolar Is the root of this tooth broader MD or BL?

Answer 2

buccolingually

Question 3

Maxillary 1st Premolar How many roots and how many canals does this tooth have?

Answer 3

2 roots, 2 canals

Question 4

Maxillary 1st Premolar What is the Universal notation for this tooth?

Answer 4

5

Question 5

What is the Universal notation for this tooth?

Answer 5

5

Question 6

Name the following structures a, b, c, and d

Answer 6

A: mesial marginal ridge developmental groove

B: buccal triangular ridge

C: distal marginal ridge

D: triangular fossa

Question 7

Maxillary 2nd Premolar Is the crown of this tooth broader MD or FL?

Answer 7

faciolingually

Question 8

Maxillary 2nd Premolar Is the root of this tooth broader MD or FL?

Answer 8

faciolingually

Question 9

Maxillary 2nd Premolar How many roots and how many canals does this tooth have?

Answer 9

1 root, 2 pulp canals

Question 10

What is the Universal notation for this tooth?

Answer 10

4

Question 11

Max 2nd Premolar How do the Buccal and Lingual cusps compare in size?

Answer 11

They are fairly equal in size

Question 12

Compare the occlusal surfaces of the Maxillary 1stand 2ndpremolars

Answer 12

1st: hexagonal outline, MB and DB line angles from right angles, 2nd: rounded/oval outline, MB and DB line angles are more rounded, central developmental groove is shorter, mesial and distal ridges are wider, less lingual convergence