What are the etiology of airway injuries in a dental offices?

Various : Airway injuries in the dental office are rare, but would include aspiration of foreign objects such as instruments, pieces of fillings being removed, water, saliva or caustic substances such as sodium hypochlorite or etching acids.

PREVENTION !: Are you referring to objects /debris from dental procedures blocking the airway? I use latex-free rubber dam when removing amalgam fillings or performing root canal treatment. This prevents anything from going down the airway. When performing restorative dentistry, I use the isolite (photo attached) which prevents anything dislodged from going down the patients throat/ airway.