What is sinus nerve?

The sinus nerve (also known as the maxillary nerve) is a branch of the trigeminal nerve. It is responsible for providing sensory innervation to the upper jaw, teeth, gums, and the nasal cavity. The sinus nerve is the largest of the three branches of the trigeminal nerve and is situated in the deep maxillary region.

The sinus nerve is responsible for transmitting pain, temperature, and touch sensations from the upper teeth, gums, and the nasal cavity to the brain. It also has autonomic functions that regulate blood flow and secretions in the nasal cavity.

Infections, trauma, and dental procedures can cause irritation or damage to the sinus nerve, leading to pain and discomfort in the face and jaw. Disorders affecting the sinus nerve include sinusitis, trigeminal neuralgia, and maxillary sinus mucocele. Treatment options for these conditions include medications, nerve blocks, and surgery in severe cases.