Your ENT specialist
is absolutely correct.
The ear infection is associated with impacted wisdom tooth
which is erupting.
Please do visit a dentist
as soon as possible.
Depending on the position of impacted tooth
,it has to be either extracted or flap overlying tooth has to be removed.
Maintain oral hygiene well.
Take complete course of antibiotics-analgesics.
Rinse your mouth after every meals.
Gargle frequently using lukewarm saline or betadine.
Hope this helps.