What is a common presentation of a lateral sinus tract?

A lateral sinus tract typically presents as a drainage point on the gingiva, which is indicative of a dental abscess or other localized infection within the oral cavity. This drainage occurs when pus from an infected area seeks an exit, often through the path of least resistance, which is commonly along the root of a tooth or through the adjacent soft tissue.

The presence of a sinus tract is a hallmark of chronic apical periodontitis or a similar condition, where there may be a necrotic pulp leading to the formation of an abscess. The drainage is purulent, and the tract can create a chronic state of inflammation in the surrounding tissues.

In contrast, facial swelling often indicates a broader area of infection and is typically associated with more severe states of inflammation or osteomyelitis. A foul taste may arise but is less specific to sinus tracts and more related to the presence of necrotic tissue or infection in general. Localized ear pain can be associated with various conditions but does not specifically indicate the presence of a lateral sinus tract. Thus, drainage from the gingiva is the most direct and typical presentation of a lateral sinus tract.