Wisdom tooth is the last tooth to erupt in the oral cavity and often its eruption is associated with symptoms like pain and discomfort in eating , difficulty in opening mouth , swelling in the jaws and cheek bite.
wisdom teeth are often tilted in position and impacted in the bone , gums overlying the tooth usually undergoes inflammation known as pericoronitis
The tilted position of the tooth leads to entrapment of the cheek mucosa in between the teeth during biting.
Due to cheek bite , the mucosa gets inflammed and appear red or white due to trauma.
i would suggest you to go for symptomatic treatment at home like gargling with lukewarm saline water or antiseptic mouthwash like chlorhexidine
you may need an OPG radiograph done for you and accordingly the tooth can be extracted surgically.
i would suggest you to start with antibiotic Augmentin
625mg along with analgesics like aceclofenac
two times daily for 3 to 5 days .
i hope this helps .