BOTB mand mols

Question 1

Which of the following grooves radiate out from the central fossa in a mandibular second molar?

a. Central
b. Mesiobuccal
c. Distobuccal
d. Lingual
e. Buccal

Answer 1

central
lingual
buccal

Question 2

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

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

Answer 2

mesiolingual

Question 3

Which cusp may be absent on a mandibular first or third molar?

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

Answer 3

distal

Question 4

When this cusp is absent in question No. 3 above (distal cusp), which groove(s) would not be present?

a. Buccal
b. Lingual
c. Mesiobuccal
d. Distobuccal
e. Lingual

Answer 4

mesiobuccal

distobuccal

Question 5

Which fossae are found on a mandibular first molar?

a. Mesial triangular
b. Distal triangular
c. Buccal
d. Lingual
e. Central

Answer 5

mesial triangular
distal triangular
central

Question 6

Which developmental groove connects with the lingual groove running in the same direction on a mandibular second molar?

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

Answer 6

buccal

Question 7

From which view is only one root visible on a mandibular first molar?

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

Answer 7

mesial

Question 8

Which root may occasionally be divided or bifurcated on a mandibular first molar?

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

Answer 8

mesial

Question 9

Which cusp triangular ridge does not meet to form a transverse ridge on a five-cusp first molar?

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

Answer 9

distal

Question 10

Which ridges form the boundaries of the mesial triangular fossa of a mandibular molar?

a. Triangular ridge of mesiobuccal cusp
b. Triangular ridge of mesiolingual cusp
c. Mesial marginal ridge
d. Buccal cusp ridge of mesiobuccal cusp
e. Lingual cusp ridge of mesiolingual cusp

Answer 10

a. Triangular ridge of mesiobuccal cusp
b. Triangular ridge of mesiolingual cusp
c. Mesial marginal ridge

Question 11

Which two pairs of cusp triangular ridges make up or join to form the two transverse ridges on a man- dibular second molar?

Answer 11

mesiobuccal and mesiolingual PLUS distobuccal and distolingual

Question 12

List in sequential order the longest to shortest cusps on the mandibular first molar.

Answer 12

mesiolingual, distolingual, mesiobuccal, distobuccal, then distal