BOTB max mols

Question 1

Which three grooves radiate out from the central fossa in a maxillary first molar?

a. Central
b. Distolingual
c. Transverse groove of oblique ridge
(when present)
d. Buccal
e. Lingual

Answer 1

a. Central
c. Transverse groove of oblique ridge
(when present)
d. Buccal

Question 2

Which cusp on a maxillary first molar has two ridges: one that forms part of a transverse ridge and the other that forms part of an oblique ridge?

a. Mesiobuccal
b. Mesiolingual
c. Distobuccal
d. Distolingual
e. Cusp of Carabelli

Answer 2

mesiolingual

Question 3

Which cusp is the largest and longest on a maxilary second molar?

a. Mesiobuccal
b. Mesiolingual
c. Distobuccal
d. Distolingual
e. Cusp of Carabelli

Answer 3

mesiolingual

Question 4

Which cusp is most likely to be absent on a maxillary second molar?

a. Mesiobuccal
b. Mesiolingual
c. Distobuccal
d. Distolingual
e. Distal

Answer 4

distolingual

Question 5

When the cusp is absent in question 4 above, which groove(s) would not be present?

a. Central
b. Buccal
c. Distal oblique
d. Lingual

Answer 5

distal oblique

lingual

Question 6

Of the four fossae on a maxillary first molar, which is the largest?

a. Mesial triangular
b. Distal triangular
c. Central
d. Distal

Answer 6

central

Question 7

From which view are only two roots visible on a maxillary first molar?

a. Mesial
b. Distal
c. Buccal
d. Lingual

Answer 7

mesial

Question 8

Which grooves are likely to radiate out of the mesial triangular fossa on the maxillary first molar?

a. Mesiobuccal fossa groove
b. Mesiolingual fossa groove
c. Mesial marginal ridge groove (when present)
d. Central
e. Buccal

Answer 8

a. Mesiobuccal fossa groove
b. Mesiolingual fossa groove
c. Mesial marginal ridge groove (when present)
d. Central

(all but buccal)

Question 9

Which two cusps have the ridges that make up or join to form the oblique ridge on a maxillary molar?

a. Mesiobuccal
b. Distobuccal
c. Mesiolingual
d. Distolingual
e. Cusp of Carabelli

Answer 9

b. Distobuccal

c. Mesiolingual

Question 10

Which two cusps have a triangular ridge that make up or join to form a transverse (not oblique) ridge on most maxillary molars?

a. Mesiobuccal
b. Distobuccal
c. Mesiolingual
d. Distolingual
e. Cusp of Carabelli

Answer 10

a. Mesiobuccal

c. Mesiolingual

Question 11

List in sequential order the largest to smallest cusp area on the maxillary first molar (occlusal view).

Answer 11

mesiolingual, mesiobuccal, distobuccal, distolingual, cusp of Carabelli (if even present)