Although mucous extravasation phenomenon can potentially occur where salivary glands are present, it is most commonly seen in which of the following intraoral sites?

A 3-year-old boy presents with an altered mental status. His parents state he wandered into the garage unattended. He presents lethargic, with a green substance around his mouth. You should first:

A) call for additional resources. B) attempt to identify the substance around his mouth. C) take a set of vital signs. D) administer oxygen.

In 1858 Samuel R. C. Mathews patented the design for the __________

Fill in the blank(s) with correct word