Which structures are anesthetized with the incisive nerve block?

The incisive nerve block primarily targets the incisive nerve, which is a branch of the mandibular nerve (V3) and provides sensory innervation to the mandibular anterior teeth, specifically the incisors and canines, as well as the adjacent buccal mucosa in that area. Additionally, it affects the pulp and surrounding structures of the mandibular anterior teeth, making it particularly effective when performing procedures such as restorative work in that region.

In contrast, while the maxillary anterior teeth are innervated by the anterior superior alveolar nerve, they are not involved in the incisive nerve block, which focuses specifically on the mandible. The buccal soft tissue of the mandibular posterior teeth is primarily supplied by the buccal nerve, a different branch of the mandibular nerve. Thus, these structures do not receive anesthesia from the incisive nerve block either.

This understanding clarifies why the correct answer pertains solely to the mandibular anterior teeth, aligning with knowledge of dental anatomy and nerve pathways in local anesthesia practices.