Wounds in your mouth — prefer from biting her cheek — heal quicker than scrapes elsewhere. Now scientists think they recognize why.

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Biting your tongue or cheek when chewing can destroy a tasty meal. Yet thankfully, mouth wounds cure up quick — much faster than cuts on skin — and also now scientists know why. According to brand-new research released today in scientific research Translational Medicine, mouths are primed for healing. The find could aid researchers transport the mouth’s curative superpowers to make skin lesions heal faster too.

Paper cuts, scraped knee and comparable skin wounds take about a week come heal. But pressure ulcers, traumatic injury and surgery deserve to take longer, periodically months. For elderly folks who have vulnerable skin and those living through metabolic illness such as diabetes, some skin lesions can not heal, leaving people vulnerable come infection and scarring.

“There is an urgent need to build effective approaches to advice the healing of skin wounds,” Maria Morasso, a skin biologist through the national Institute of Arthritis and Musculoskeletal and also Skin illness in Bethesda, Maryland, who led the brand-new research, said in a statement.

Mending Mouths

Rather than trying to recognize what go wrong as soon as skin wounds don’t cure well as scientists have actually in the past, Morasso sought a place where wounds close increase easily and also quickly: the mouth.

For Morasso, the made sense that mouth injuries mend v speed. Chewing reasons friction to wake up wounds, so swift healing deserve to stop rubbing indigenous dragging out an injury. And the mouth is full of microbes. Trauma division the barrier that keeps out bacteria, so it’s important to close increase gaps rapid for all at once health.

To find out why mouth wounds heal quicker than those to skin, Morasso and also a team the researchers encouraged 30 healthy individuals come let them take an eighth of an inch hole beat from the insides of their cheeks and also the undersides of your arms. Together expected, the mouth wounds closed increase in a few days, but the skin wounds lingered for an ext than two weeks.

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When the team analyzed alters in gene expression native the skin and mouth at some point after inflicting the injuries, they found that wound repair gene were currently turned ~ above in the mouth. That means the mouth is prepared to spring into curative action, conversely, the skin takes much longer to revolve on repair systems before healing deserve to begin. That could be why skin wounds heal slow than dental ones, the researcher say. Additionally, mouth cells prevented inflammation, further accelerating healing.