Final answer:
The maxillary nerve supplies the maxillary incisors and the cuspid. It is a branch of the trigeminal nerve and provides sensation to the upper teeth, unlike the mandibular nerve which supplies the lower teeth.
Explanati0n;
The maxillary nerve, which is a branch of the trigeminal nerve (the fifth cranial nerve), is responsible for supplying sensation to the maxillary incisors and the cuspid. When performing a dental procedure on the upper teeth, an anesthetic is usually injected in proximity to the maxillary nerve to numb these areas. The mandibular nerve, on the other hand, supplies the lower teeth, as it enters the mandibular foramen and follows the canal within the mandible. It's important to note the differentiation between the sensory supply to the upper teeth and the lower teeth to understand why the maxillary nerve, rather than the mandibular nerve, is the correct answer here.The nerve that supplies the maxillary incisors and the cuspid is the maxillary nerve (C).
The maxillary nerve is one of the three branches of the trigeminal nerve, which is responsible for sensation in the face and motor functions to the muscles of mastication. It provides sensory innervation to the upper teeth and gums, as well as the upper lip, palate, and nasal cavity.
In contrast, the mandibular nerve (A) supplies sensation to the lower teeth and gums, while the lingual nerve (B) innervates the tongue. The buccal nerve (D) primarily supplies sensation to the cheek and adjacent tissues. Therefore, the correct answer is C) Maxillary nerve.