Fix your occlusion: Occlusion, or the way your upper teeth occluded against the lower teeth, could be compromised (cross bite, interference, end to end) and cause lip biting during function. Go to your dentist and check your occlusion. Mucocele, a small bump due to salivary deposit into soft tissue after a minor salivary gland/duct rupture following trauma such as lip biting, can further introduce more lip biting.
Answered 4/7/2018
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