Midterm 2.1

Question 1

name the grooves for the 1st mandibular molar? which one is unique?

Answer 1

central. MB, DB, lingual

* DB is unique, starts at central groove mesial to distal fossa

Question 2

name the grooves for the 2nd mandibular molar? Which one is unique?

Answer 2

central, buccal and lingual

*buccal= extends onto buccal surface and carries prone

Question 3

which groove is carries prone for mandibular molars?

Answer 3

buccal groove on 2nd mandibular molars

Question 4

what cusp is smallest on the mandibular 1st and 2nd molar?

Answer 4

MD 1= distal cusp

MD 2= distobuccal cusp

Question 5

how many roots does mandibular molars have?

Answer 5

2; mesial and distal

Question 6

what root for a mandibular molar is most likely to have two canals?

Answer 6

mesial

Question 7

how many roots does a maxillary molar have?

Answer 7

3; lingual, mesial buccal, distolbuccal

Question 8

which root in the maxillary molar is longest?

Answer 8

lingual

Question 9

which maxillary root is likely to have two canals?

Answer 9

mesiobuccal

Question 10

What is maxillary molars greatest dimension? Mandibular?

Answer 10

Max= facial-lingual
Mand= mesial-distal

Question 11

what cusp makes 1 mandibular molars unique?

Answer 11

distal cusp (smallest cusp)

Question 12

how many transverse ridges do mandibular molars have?

Answer 12

2
1- ML to MB
2- DL to DB

Question 13

how many transverse ridges to maxillary molars have?

Answer 13

1; ML to MD

Question 14

how many oblique ridges do maxillary molars have?

Answer 14

1; ML to DB

Question 15

maxillary molars are unique in that they?

Answer 15

have a 5th smaller cusp called “cusp of carabelli”

Question 16

what ridge is most prominent on mandibular 2 molars?

Answer 16

mesial buccal cervical ridge

Question 17

mandibular molars have more bulk where? and tilt what direction?

Answer 17

more bulk on buccal and tilt lingually (and distally)

Question 18

what are the names to the fossa on mandibular molars?

Answer 18

central, mesial triangular and distal triangular

Question 19

order of largest to smallest maxillary molar cusps?

Answer 19

ML > MB > DB > DL

Question 20

ankylosis

Answer 20

fusion of cementum to alveolar bone when periodontal ligament is lost, can cause infraversion

Question 21

What tooth is most likely to have bifurcated root?

Answer 21

Maxillary 1st premolars