Which tooth has a buccal pit?
(A.) Mandibular first molar
(B.) Maxillary first molar
(C.) Mandibular second molar
(D.) Maxillary second molar
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Answer: (A.) Mandibular first molar
Here are some characteristics of the mandibular first molar:
- Has 2 roots
- Has 5 cusps (3 facial, 2 lingual)
- Is generally the first tooth to erupt in the permanent dentition
- A buccal pit (depression on the buccal aspect of the tooth) is present
The buccal pit can facilitate biofilm retention which promotes caries, and for this reason it is often sealed or treated.
All other teeth do not have buccal pits.
One characteristic of the maxillary first molar is the presence of the cusp of Carabelli.
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