1. Which cusp may be absent on a mandibular first molar? a. Mesiobuccal b. Distobuccal c. Mesiolingual d. Distolingual e. Distal 2. When this cusp is absent in question no. 3 above, which...

1. Which cusp may be absent on a mandibular first molar?

a. Mesiobuccal

b. Distobuccal

c. Mesiolingual

d. Distolingual

e. Distal

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

a. Buccal

b. Lingual

c. Mesiobuccal

d. Distobuccal

e. Lingual