Mandibular Molars

Question 1

how many cusps does the mandibular 1st molar have

Answer 1

5 cusps

Question 2

how many cusps does the mandibular 2nd molar have

Answer 2

4 cusps

Question 3

are mandibular molars greater MD or BL

Answer 3

MD

Question 4

what is the shape of the mandibular first molar from the buccal aspect

Answer 4

trapezoidal

Question 5

how many cusps are visible from the buccal aspect

Answer 5

all 5 cusps

Question 6

describe the MB developmental groove of the mandibular 1st molar

Answer 6

MB developmental groove: shorter and terminates in middle third of tooth

Question 7

describe the DB developmental groove of the mandibular 1st molar

Answer 7

terminates in cervical 1/3

Question 8

where are the mesial and distal heights of contour of the mandibular 1st molar

Answer 8

mesial: middle
distal: middle

Question 9

what is the bifurcation level from the buccal aspect of the mandibular 1st molar

Answer 9

3 mm

Question 10

where are the developmental depressions on the roots of the mandibular 1st molar

Answer 10

mesial and distal aspects and buccally

Question 11

what cusps are visible from the lingual aspect on the mandibular 1st molar

Answer 11

ML, DL, and distal

Question 12

what is the level of bifurcation lingually of the mandibular 1st molar

Answer 12

4 mm

Question 13

what is the bifurcation of the mandibular 1st molar lingually in line with

Answer 13

the lingual developmental groove

Question 14

what is the shape of the mandibular 1st molar mesially

Answer 14

rhomboidal

Question 15

where is the buccal height of contour on the mandibular 1st molar

Answer 15

cervical 1/3 on the buccal cervical ridge

Question 16

what is the special relationship of the crown to the root axis in mandibular molars and premoalrs

Answer 16

crown has a lingual tilt to the root axis

Question 17

where is the lingual height of contour of the mandibular 1st molar

Answer 17

middle 1/3

Question 18

which aspect is the cervical line higher: lingually or buccaly

Answer 18

lingually

Question 19

where is root apex in relation to the MB cusp from mesial aspect of the mandibular 1st molar

Answer 19

in line

Question 20

what depressions are there on the mandibular 1st molar roots

Answer 20

mesial and distal developmental depressions

Question 21

what is the occlusal shape of the mandibular 1st molar

Answer 21

hexagonal

Question 22

what are the major and minor fossae of the mandibular 1st molar

Answer 22

major: central fossa
minor: mesial triangular and distal triangular fossa

Question 23

what are the grooves of the occlusal view of the mandibular 1st molar

Answer 23

-central developmental groove
- mesiobuccal developmental groove
- distobuccal developmental groove
-lingual developmental groove

Question 24

what are the boundaries of the central fossa of the mandibular 1st molar

Answer 24

-distal slope of the MB cusp
-mesial and distal slopes of the DB cusp
- mesial slope of the D cusp
- distal slope of the ML cusp
- mesial slope of the DL cusp
-triangular ridges of the MB,D,DL, and ML cusps

Question 25

how many cusps are visible from the buccal aspect of the mandibular 2nd molar

Answer 25

all 4

Question 26

where are the mesial and distal contacts of the mandibular 2nd molar

Answer 26

middle 1/3

Question 27

where is the distal contact of the mandibular 2nd molar

Answer 27

middle third, centered BL

Question 28

what is the shape of the occlusal aspect of the mandibular 2nd molar

Answer 28

rectangular

Question 29

describe the shape mandibular 3rd molar crowns? maxillary 3rd molar crowns?

Answer 29

mandibular are oversized
maxillary are undersized

Question 30

how many cusps do the mandibular 3rd molars have

Answer 30

2 cusps