A 49-year-old woman in Nevada developed foreign body (FB) sinusitis after amalgam restorative material moved from a tooth in her upper jaw into the paranasal sinuses. The case report was published ...

There are 4 sets of sinuses ordinarily present in humans, but congenital absence or hypoplasia of one or more sinus cavities is not uncommon. The maxillary and ethmoidal sinuses form during the third ...