A potentially fatal complication that may occur during dental treatment: "foreign body aspiration".

Numerous systemic emergency situations, such as hypotension or allergic reactions, may be encountered during dental treatment. In addition, rare but life-threatening complications such as foreign body aspiration in the air passages may also be seen. Aspirated foreign bodies include teeth, implants, mechanical supports or materials used during procedures. We report two separate cases of aspiration risk developing during the course of dental treatment.