If there is not enough room in your mouth for wisdom teeth to fully erupt, a number of problems could happen.Wisdom teeth (third molar) could erupt in angle (impacted). Impacted wisdom teeth can cause food and bacterial trap, resulting in gum infection (pericoronitis) and the decay to wisdom tooth as well as adjacent second molar. Dentist can evaluate the potential issues by examining the whole jaw Xray (OPG) and perform removal of infected wisdom teeth under local or general anaesthesia.