a cavitation is when the tooth. normaly a molar./ wisdom teeth
has been extracted. but the ligament. the part conected to the tooth that holds it to the bone,has not been completly removed..and heals over with a hole pocket left inside. and fills with bad toxins most dentist dont remove all of it. unless there holistic dentists.
there is a self test that you can do. squeeze firmly where the tooth was. if theres a dull ach. the chances are you have a cavitation..

you could go for a cavitat scan.... theres one in pool, dorset.
and one in bedfordshire..