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The inferior alveolar nerve (IAN) (also the inferior dental nerve) is a sensory ... lesson4 at The Anatomy Lesson by Wesley Norman (Georgetown University) ...
In human anatomy, the mandibular canal is a canal within the mandible that contains the inferior alveolar nerve, inferior alveolar artery, and inferior alveolar vein. It runs obliquely downward and forward in the ramus, and then horizontally forward in the body, where it is placed under the alveoli and communicates with them by small openings.
It is a branch of the inferior alveolar nerve. It provides motor innervation the mylohyoid muscle , and the anterior belly of the digastric muscle . It provides sensory innervation to part of the submental area, and sometimes also the mandibular (lower) molar teeth , requiring local anaesthesia for some oral procedures.
Inferior alveolar nerve block (abbreviated to IANB, and also termed inferior alveolar nerve anesthesia or inferior dental block) is a nerve block technique which induces anesthesia (numbness) in the areas of the mouth and face innervated by one of the inferior alveolar nerves which are paired on the left and right side.
The mental nerve is a branch of the posterior trunk of the inferior alveolar nerve. This is a branch of the mandibular nerve (CN V 3), itself a branch of the trigeminal nerve (CN V). [1] It emerges from the mental foramen in the mandible. [2] It divides into three branches beneath the depressor anguli oris muscle.
The inferior alveolar nerve splits into its two terminal branches within the mandibular canal: the mental nerve (which exits the mandible through the mental foramen), and the incisive nerve which represents an anterior continuation of the inferior alveolar nerve and continues to course within the mandible in the mandibular incisive canal.
Another possible complication of an inferior alveolar nerve block occurs when the needle is placed too deep, passing through the pterygomandibular space and into the parotid gland behind. Branches of the facial nerve (which gives the motor supply to the muscles of facial expression ) run through the substance of the parotid gland and so this is ...
The inferior alveolar nerve passes lateral to the raphe; the raphe is therefore a landmark for a nerve block of this nerve. [2] ... "Anatomy diagram: 05287.011-1".