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Dentistry/Problem following injection


QUESTION: One week ago I has a crown preparation done on tooth #19.   The crown was done because the filling was very large and old and part of the filling was chipped away.   There were no other problems present.   The procedure went along without problem.  The numbing injection took a very long time to wear off - about 4 hours.   After the anesthetic wore off I had a tremor in my lower lip.  This lasted for about 2 - 3 days and then began to subside.
It continued to subside but it not completely gone yet.

What could have caused this to happen?   Will it go away completely?

I have called my dentist but he has not returned my call.

Thank you for your time

ANSWER: Dear Patricia,

What probably happened was that your mandibular nerve, the nerve we make numb to work on your lower teeth, became irritated from the injection.  This nerve supplies both feeling and movement to your lower teeth and your lower lip.  An irritated nerve can do many things.  When your Phrenic nerve is irritated, you get the hiccups.  Anyway, as long as you are getting better, which usually happens, there is nothing to worry about.  But it's a good idea to let your dentist know this happened.

---------- FOLLOW-UP ----------

QUESTION: Dear Dr. Finnk,

I continue to have improvement but not totally gone yet.   How long should I expect this to last?

Thank you again for your time.  I really appreciate your consideration.

Did you let your dentist know (as I suggested in my answer)?  Your dentist would be the best person to answer your question right now.  I have not seen these twitches last much longer than a week.  By 3 weeks, it should be completely gone.  If not, you must tell your dentist.


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Howard Finnk, D.D.S., P.A., CEO


I am a Family, Implant and Cosmetic dentist. I will answer questions on any aspect of dentistry and matters relating to the smile, gums, jaws and lower face. Member American Dental Association, Florida Dental Association, Broward County Dental Association, and Atlantic Coast District Dental Association. I have served as District Council Member of Alpha Omega, as well as serving for one term as its President. I am also a member of The Vedder Honors Society, Broward Dental Research Clinic, and Mount Sinai Hospital Guild. I have served as a Volunteer for Project Dental Health and The Tri-County Dental Health Council.


Having attained over 30 years of clinical experience in private practice in Michigan, in 2001 I was re-certified by taking and passing the Florida State Dental Board Examination. After moving to Florida, I spent nearly 10 years re-honing my skills while working as an Associate Dentist for several large dental groups. In September, 2004, I was appointed Adjunct Clinical Professor at Nova University's College of Dental Medicine. I am certified in placement of Mini Dental Implants, and I am Director of The Florida Implant Center ( On March 1, 2010, at the age of 62, I began all over again by buying a dental practice near my home in the Fort Lauderdale area. As sole owner and Chief Dental Officer of the new Nob Hill Dental Center (, I can now carefully provide dental care to patients who care, all within a caring, joyful environment. Over my career lifetime, I have provided thousands of diagnoses, fillings, crowns, bridges, root canals, periodontal treatments, TMJ therapies, partials, dentures and extractions, and dozens of implants for my patients. The only aspect of dentistry with which I have very little experience is orthodontics.

American Dental Association, Florida Dental Association, Broward County Dental Association, Atlantic Coast District Dental Society, Vedder Honors Society, Broward Dental Research Clinic, Alpha Omega Alumni Association, and American Association of Dental Implantologists. Formerly, American Academy of General Dentistry, Michigan Dental Association, Macomb Dental Society, Detroit District Dental Society, Tri-County Dental Health Council (a charitable dental care organization)

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Bachelor of Arts and Sciences in Psychology from Wayne State University Doctor of Dental Surgery from University of Detroit College of Dentistry Adjunct Clinical Professor, Special Needs Department, Nova Southeastern University College of Dental Medicine, Fort Lauderdale, Florida

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