Operculectomy
), then this If the flap of gum overlying the wisdom tooth
(the can be removed by a number of means (‘cold steel’,
glacial acetic acid, radio-surgical means, laser or cautery).
  • It possible that this may grow back and the
    operculectomy may need to be repeated.

  • In the area where the operculum is removed, runs the
    Lingual Nerve that supplies sensation to the tongue
    (and if this is effected by the operculectomy, a numb
    tongue may result as well as loss of taste on that side
    of the tongue; the numbness can last up several
    months) and sometimes aberrant blood vessels (that
    can be surprisingly vigorous in bleeding).

  • Coupled with this, it can be quite sore afterwards and
    there may be limitation of mouth opening.

  • If the wisdom teeth flare-ups have been quite episodic,
    then it may be hard to know if the operculectomy has
    in itself, been successful.

An operculectomy is sometimes considered if the upper,
opposing wisdom tooth is traumatising the operculum.  
SIGN suggests pain associated with the lower wisdom
tooth is commonly exacerbated by the upper wisdom tooth
biting on the gum flap (operculum), causing pain and
discomfort.

Alternatively, if the upper wisdom tooth is easy to remove
and is non-functional, then immediate removal of that tooth
will often dramatically relieve the pain from the area.  This
is particularly useful where there is likely to be delay in the
removal of the lower wisdom tooth and can be regarded as
an interim measure (after referral but prior to surgery).
Surgical-Dentistry.Info