Which nerve supplies the maxillary molars except for the mesiobuccal root of the first molar?

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Dive into the Pertinent Anatomy of Maxillary Local Anesthesia Test. Study with comprehensive flashcards and multiple choice questions. Each question provides hints and explanations. Prepare for your exam success!

Multiple Choice

Which nerve supplies the maxillary molars except for the mesiobuccal root of the first molar?

Explanation:
The posterior superior alveolar nerve is the main supplier to the maxillary molars. It innervates the molars (except the mesiobuccal root of the first maxillary molar), the buccal gingiva, and adjacent tissues. The mesiobuccal root of the first molar is typically innervated by the middle superior alveolar nerve when present, which is why that root isn’t covered by the PSA. The infraorbital nerve gives off branches (like the anterior– and middle–superior alveolar nerves) that innervate other areas, but the direct molar teeth innervation comes from the PSA, making it the best answer.

The posterior superior alveolar nerve is the main supplier to the maxillary molars. It innervates the molars (except the mesiobuccal root of the first maxillary molar), the buccal gingiva, and adjacent tissues. The mesiobuccal root of the first molar is typically innervated by the middle superior alveolar nerve when present, which is why that root isn’t covered by the PSA. The infraorbital nerve gives off branches (like the anterior– and middle–superior alveolar nerves) that innervate other areas, but the direct molar teeth innervation comes from the PSA, making it the best answer.

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