Hello Ms. lybrate-user
first your question is in complete you didn't tell about your chief complaint that why you visit to a dentist
. Second thing removal or extraction of wisdom tooth is depend on many conditions like it is partially erupted, cavity, eruption in wrong manner like it is tilted to the mesial ,distal, lingual or buccal either it is impacted or either there is food stuck due to which second molar have tendency to developed cavity in future. You didn't tell about your trouble here.