Predisposing factors for it is include anatomical variations in the maxillary sinus floor and its relationship with the apices of the upper teeth.
Chronic inflammatory foci in the root areas of teeth and systemic diseases that reduce bone density also contribute.
This case exemplifies a situation where the roots of an upper wisdom tooth extended into the maxillary sinus.
The extraction was challenging; a root fragment fractured during the procedure, but was successfully retrieved.
Subsequently, a gum surgery was performed to close the communication. A lower wisdom tooth was also extracted during the same visit.