What is a key feature of pericoronitis?

A key feature of pericoronitis is the difficulty opening the mouth, which often accompanies the condition. This dental issue typically arises when the gums become inflamed around a partially erupted third molar or wisdom tooth. The inflammation can lead to swelling and discomfort in the surrounding tissues, which in turn may limit jaw movement. This restriction in jaw function is commonly referred to as trismus.

While pain that radiates to the ear, the formation of a cyst, and the presence of a visible abscess can be associated with various dental conditions, they are not defining characteristics of pericoronitis specifically. Radiating pain can occur in many oral health issues, cyst formation is typically related to chronic conditions or infections, and abscesses may indicate a more advanced infection, but they aren't exclusive to or essential for diagnosing pericoronitis. Therefore, the difficulty in opening the mouth stands out as a significant and characteristic feature of this condition.