What typically causes pericoronitis with the arrival of permanent teeth?

Pericoronitis is an inflammatory condition that commonly occurs around the crown of partially erupted teeth, particularly wisdom teeth. In the context of the arrival of permanent teeth, food impaction is a significant contributing factor to the development of pericoronitis. When a tooth is only partially erupted, the gum flap surrounding it can trap food particles and bacteria, leading to irritation and inflammation of the gingiva, known as pericoronitis.

As permanent teeth erupt, especially the third molars, the anatomical spaces around these teeth may not completely accommodate the erupting teeth, allowing food debris to accumulate. This accumulation creates a favorable environment for bacterial growth, further exacerbating the inflammation and pain associated with pericoronitis. This scenario highlights the importance of maintaining good oral hygiene and regular dental check-ups during the transition from primary to permanent dentition to prevent such complications.