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A member asked:
Why do the corners of my lips shake when i smile without showing my teeth? it's not always but most of the time .
7 doctors weighed in across 2 answers
Dystonia: It could be a mild form of oromandibular dystonia . Get the advise of a neurologist ..It is not serious.
Answered 10/7/2017
4.4k views
Muscles' balance: Interesting observation! many muscles work together in a delicate balance to raise or lower the corners of your mouth/lips to smile or frown. For instance, a large, sheet-like muscles called platysma pulls down the lip corners. If muscles like platysma are chronically tense, muscles to raise lip corners, or smile, will work harder, and quiver. Unbalanced bite may cause this also.
Answered 11/3/2017
4.3k views
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