What does the inferior dental nerve primarily supply?

The inferior dental nerve primarily supplies innervation to the lower teeth and the buccal gingiva associated with those teeth. This nerve is a branch of the mandibular division of the trigeminal nerve, which is responsible for sensory innervation in the lower jaw region.

When the inferior dental nerve enters the mandible through the mandibular canal, it branches into smaller nerves that provide sensation to each of the lower molars, premolars, and canines, as well as the surrounding gingival tissues on the buccal side. This supply is essential for the proper functioning of the teeth and the associated structures, allowing for sensations such as pain, pressure, and temperature.

In contrast, other options represent areas served by different nerves or structures. The upper teeth and maxillary gingiva are supplied by branches of the maxillary nerve, rather than the inferior dental nerve. The palatoglossal arch and soft palate are innervated by different branches that are not the inferior dental nerve, and the lingual gingiva and floor of the mouth are primarily supplied by the lingual nerve, which also branches from the mandibular division but is distinct from the inferior dental nerve's pathway.