Which of the following structures is innervated by the Long Buccal Nerve?

The Long Buccal Nerve is primarily responsible for providing sensory innervation to the buccal gingivae of the lower molar teeth. This nerve, a branch of the mandibular division of the trigeminal nerve (CN V3), specifically targets the mucosa and gingival tissues associated with the lower molars, facilitating the sensory perception in that area.

The buccal gingivae of the lower molar teeth require this innervation for sensations like touch, pain, and temperature, which are crucial for oral functions such as chewing and speaking. Understanding the specific innervation by the Long Buccal Nerve helps dental professionals effectively manage local anesthesia during procedures involving the lower molars and surrounding structures.

Other options, such as the buccal gingivae of upper molar teeth, lingual gingivae of upper teeth, and soft tissue of the lower lip, are innervated by different nerves. For example, the upper molar area is innervated by the superior alveolar nerve, and the soft tissue of the lower lip receives its innervation primarily from the mental nerve. This distinction in nerve function is key for dental professionals to ensure accurate diagnosis and treatment.