Due to proximity of adjacent tooth, third lower molar caries resulted
in a communicating lesion for many years, but no pain, with occasional
taste of exudate. 3 months ago 4mm piece broke off exposing interior of
tooth. With risk of lingual nerve damage on exicision in an adult, the
preference is to keep the tooth, but closing the cavity completely is
prob. neither possible (due to proximity to gingival surface and access
difficulty from adjacent molar ) - or advisable due to likelihood of
pressure bildup.
What are your preferred solutions ?

1) Exicse (declined, prefer current management with cotton filling
placed w. explorer)

2) Rootcanal (declined, overkill for a third molar, would also leave
the side open)

3) Eugenol management ?

4) Management with new compound less irritating to oral mucosa than
eugenol ?

5) Placing filling after placing a wire in split section so that a
canal can allow continued exudate flow?

Thank you for your insight. The pulp is definitively vital, cooling
pain disappears at once, there is
only light tapping pain. One would think there is a low abscess risk as
long as there is an opening..