Which teeth are typically supplied by two different nerves?

The maxillary first molar is typically supplied by two different nerves, which makes it the correct answer. This tooth is supplied by branches of the maxillary nerve (V2), specifically the posterior superior alveolar nerve and the middle superior alveolar nerve, if present, or from the anterior superior alveolar nerve as well. This dual innervation arises because of the tooth’s complex anatomy and its location in the maxillary arch, requiring contributions from multiple nerves to adequately provide sensory innervation.

The mandible first molar is generally innervated by a single nerve, primarily the inferior alveolar nerve, and in some cases, the buccal nerve for specific areas. The maxillary second molar, while close in nerve supply to the first molar, typically receives its innervation from one main source, namely the posterior superior alveolar nerve. The mandibular third molar, similar to the first molar of the same arch, is usually innervated by the inferior alveolar nerve, with no additional significant nerve supply. Overall, the multiple innervations of the maxillary first molar allow for a richer sensory experience and the potential for variability in pain response and treatment considerations.