An infraorbital nerve block, which branches from the maxillary nerve, anesthetizes the lower eyelid, upper cheek, part of the nose, and upper lip (see image below).
How long does infraorbital nerve block last?
An infraorbital nerve block requires 1-3 mL of the chosen anesthetic agent. Lidocaine (Xylocaine) is the most commonly used agent. The onset of action for lidocaine is approximately 4-6 minutes. The duration of effect is approximately 75 minutes.
What is the function of the infraorbital nerve?
Sensory Abnormalities The infraorbital nerve supplies sensation to the skin of the cheek, the upper lip, the lateral aspect of the nose, and the ipsilateral upper teeth. This nerve is located at the mid-pupillary line approximately 7 mm below the infraorbital rim.
What is a infraorbital nerve block?
The infraorbital nerve block anesthetizes the anterior and middle maxillary alveolar nerves, inferior palpebral, lateral nasal, and superior labial. This also includes the maxillary incisors, canines, and premolars, as well as their vestibular osseous support and the soft tissues which cover them.
How do you anesthetize your nose?
Anesthesia of external nose Block the external nasal nerve with an intercartilaginous injection of the nasal dorsum from the region of the rhinion to the supratip region. Next, block the nasopalatine nerve with an injection at the base of the columella and nasal tip. Inject the other side in a similar fashion.
How can I numb my infraorbital nerve?
An anesthetic is injected through the skin of the cheek into the area around the infraorbital canal using a small needle. The doctor firmly massages the area for 10-15 seconds. After a few minutes, the area of the infraorbital nerve becomes numb and the procedure can be performed.
When do you give an infraorbital nerve block?
Nerve blocks are useful when a wound repair is required over a large area that is innervated by one nerve. They are also useful when local infiltration of the wound may not be possible or could result in tissue damage or distortion.
Where do you give an infraorbital nerve block?
An infraorbital nerve block anesthetizes the ipsilateral lower eyelid, upper cheek, side of the nose, and upper lip.
What causes infraorbital nerve pain?
Causes of infraorbital neuralgia (nerve pain) include trauma, plastic surgery, shingles or other viral infections that lead to nerve irritations. Symptoms of infraorbital neuralgia include sharp, shooting and tingling pain. Areas of the face may become very sensitive to touch.
When does the maxillary nerve become the infraorbital nerve?
3) The floor of the orbit: After exiting the pterygopalatine fossa through the inferior orbital fissure, the maxillary nerve enters the orbit as infraorbital nerve which is its terminal branch.
What does the infraorbital nerve block numb?
What is infraorbital nerve block used for?
Indications Infraorbital nerve block is commonly used in neonates, infants, and older children undergoing cleft lip repair to provide early postoperative analgesia without the potential risk of respiratory depression that may occur when opioid analgesics are used.
When is a nerve block performed on the face?
If the injury crosses midline, it may be beneficial to perform a nerve block on both sides of the face. The infraorbital nerve innervates the area of the lower eyelid, the side of the nose, the upper lip, upper incisor, canine, premolars, and root of the first molar. It only provides sensory innervation.
What causes chronic pain in the infraorbital nerve?
If the implant contacts and puts pressure on the infraorbital nerve, reoperation to move the implant (or to remove it) may be necessary to resolve the irritation. Chronic pain can also be the result of scar tissue adjacent to the nerve fibers.
What is neuropraxia in subperiosteal dissection?
The nerve is subject to a stretch injury (neuropraxia) during subperiosteal dissection. Complete transection of the nerve trunk or of some of the fibers can also occur.
