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Results 1 - 2 of 2 for Inability to protrude lips
  1. Malocclusion of teeth 
    ... prognathism or underbite, occurs when the lower jaw protrudes or juts forward, causing the lower jaw and teeth to overlap the upper jaw and teeth.
    https://medlineplus.gov/ency/article/001058.htm - Medical Encyclopedia
  2. Broken or dislocated jaw 
    ... jaw Numbness of the face (particularly the lower lip) Ear pain ... or jaw that protrudes forward Teeth that do not line up properly
    https://medlineplus.gov/ency/article/000019.htm - Medical Encyclopedia