Which nerves form the superior dental plexus and become dental nerves, interdental branches, and interradicular branches?

• A. PSA, MSA, & ASA
• B. Infraorbital nerve
• C. Nasopalatine nerve
• D. Greater palatine nerve

Answer: (A)

The network that innervates the maxillary teeth is formed by the three superior alveolar branches that come from the maxillary division of the trigeminal nerve: the posterior superior alveolar, the middle superior alveolar, and the anterior superior alveolar nerves. These nerves converge to create the superior dental plexus, from which dental nerves enter the tooth sockets, while interdental branches pass between teeth and interradicular branches reach the roots in the furcation areas. The infraorbital nerve carries these fibers but the plexus itself is built from the PSA, MSA, and ASA; the nasopalatine and greater palatine nerves provide palatal innervation and are not part of this dental plexus. So, the nerves forming the superior dental plexus are the posterior, middle, and anterior superior alveolar nerves.