Page 4<br>Due to the improper operation of plastic surgeons, central facial paralysis will occur on the face, upper facial muscles are not paralyzed, closed eyes, raised eyebrows and frowns are normal, lower muscles are paralyzed, the nasolabial groove on the diseased side becomes shallow, the angle of mouth droops, and the angle of mouth tilts to the healthy side during the action of tooth indication. The other is peripheral facial paralysis, which leads to paralysis of all facial muscles on one side of the face, insufficient closure of the eyelids, drooping of the corners of the mouth, limited lifting of the eyebrows, thinning or disappearance of the forehead lines, lower eyebrows than the healthy side, large fission of the eyelids, overflow of tears, traction of the corners of the mouth to the healthy side when showing teeth or laughing, oblique oval mouth, unclear speech and pronunciation
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