Molars

Question 1

1) 3-5 cusps, with at least 2 facial

2) large occlusal surface

Answer 1

molars general characteristics

Question 2

1) crowns wider faciolingually than mesiodistally
2) 3 roots - 2 facial and 1 lingual
3) buccal cusps longer than lingual
4) oblique ridges

Answer 2

maxillary molar

Question 3

1) occlusal view: strong oblique ridge, which is less likely to be crossed by a groove
2) 3 roots widely separated
3) frequently 5th cusp [carabelli’s] on ML

Answer 3

maxillary 1st molar

Question 4

1) mesiolingual cusp always larger than distolingual cusp
2) cusp of carabelli’s on ML
3) oblique ridge runs ML-DB

Answer 4

maxillary 1st molar right left

Question 5

1) occusal view - smaller, oblique ridge usually interrupted by a groove
2) roots close together
3) no 5th cusp
4) DL cusp smaller than 1st or missing
5) less symmetrical - rhomboidal shape

Answer 5

maxillary 2nd molar

Question 6

1) ML cusp larger than DL cusp

2) oblique ridge ML - DB

Answer 6

maxillary 2nd molar right left

Question 7

1) distolingual cusp progressively smaller or may be missing
2) roots are close or fused
3) no distinct oblique ridge
4) many supplemental grooves
5) mimic 1st or 2nd molar anatomy

Answer 7

maxillary 3rd molar

Question 8

1) roots fused and curved distally [caution]

2) wider on mesial from facial to lingual than distal

Answer 8

maxillary 3rd molar right left

Question 9

1) crowns wider mesiodistally than faciolingually
2) 2 roots - mesial and distal
3) lingual cusps are longer than facial cusps

Answer 9

mandibular molar general characteristics

Question 10

1) 3 facial cusps and 2 facial [buccal] grooves [tell facial from lingual])
2) roots widely separated and vertical [2 root canals on mesial])

Answer 10

mandibular 1st molar

Question 11

1) distal cusp is smallest facial cusp
2) mesiobuccal to lingual width is greater than distal buccal to lingual width
3) proximal view - buccal height of contour is in cervical 1/3, lingual height of contour is in middle1/3

Answer 11

mandibular 1st molar right left

Question 12

1) only 2 facial cusps and 1 facial cusp
2) occlusal view - groove well defined and forms a ‘+’ with facial and lingual grooves
3) roots are close together

Answer 12

mandibular 2nd molar

Question 13

1) proximal view - buccal height of contour is in cervical 1/3, lingual is in middle 1/3
2) mesial buccal prominence at cervical
3) facial - lingual width of mesial surface is greater than distofacial - lingual width

Answer 13

mandibular 2nd molar right left

Question 14

1) anatomy will mimic 1st or 2nd
2) roots close together or fused
3) many supplemental grooves with central groove

Answer 14

mandibular 3rd molar

Question 15

1) crown tapers distally, mesial width greater than distal

Answer 15

mandibular 3rd molar right left