Hello there...this is a frequent complaint we have from few of the patients following third molar removal. In those patients who have the wisdom tooth located very near to the mandibular canal experiences more of these symptoms. At the time of removal there is some pressure (neuropraxia) exerted over the canal that lodges the nerve that supplies your teeth and lip and chin on that side of the face. Owing to degree of compression over the nerve sensation of that side of the lip and chin is lost for some time. We call this transient paresthesia
. Few patients get back to normal within week's time and few it might even take an year. Its a subjective feeling. This nerve is purely sensory in function. This nerve mediates all kind of sensation such as pain,touch,cold
, warmthness and so on... this has got nothing to do with the muscles responsible for smile and any other functions. The facial muscles
are supplied by another nerve (facial nerve
) which doesnt come into way while operating on third molars. Owing to the numbness
you have on the right lip, you are unable to appreciate the movement of the same. As your doctor told you it has nothing to do with the third molar removal.
There are times when parotid infections on the left side would also cause transient palsy
. This would be a concurrent clinical manifestation along with third molars...Visit a Maxillofacial Surgeon for further clinical evaluation and management.