Does this image show the innervation of the teeth?


Have you ever wondered why the pain from a toothache doesn’t seem to stay in the tooth? A photo shared on social media offers a complex insight into the proximity of nerves from the human brain extending around the face and spreading to every tooth.

The image in question was popularized in November 2021 when it was shared on Reddit, but had been shared on social media in previous years by doctors and dentists.

The nerves that innervate the teeth of interest

And it is true and authentic. The image was created by Anatomy Next, a medical publishing company specializing in print books and digital software and representing the nerve connections between the brain and teeth.

The nerves that end in each tooth originate from the maxillary nerve, which originates from the trigeminal nerve, a mixed nerve bundle made up of motor and sensory fibers that extends around the brain and all over the face. The trigeminal nerve provides sensory innervation to the oral and nasal cavities, as well as the ear, conjunctiva (mucous membrane that covers the front of the eye) and facial skin, according to Anatomy Next.

Being the second branch of the trigeminal nerve, the maxillary nerve provides sensory information to the central nervous system from the teeth of the upper jaw, upper lip and check, and the middle parts of the face.

Sources

“The nerves that innervate the teeth.” R / Interestingasfuck, November 15, 2021, www.reddit.com/r/interestingasfuck/comments/quob1w/the_nerves_that_innervate_the_teeth/.

Maxillary nerve (CN V2). https://anatomy.net/maxillary-nerve-cn-v2. Accessed November 26, 2021.

Trigeminal nerve (CN V). https://anatomy.net/trigeminal-nerve-cn-v. Accessed November 26, 2021.


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