<prompt> Ludwigs angina usually begins in which of the following space?Submandibular spaceSublingual spaceSubmental spaceAll of the above  <response>: Ludwigs angina is an acute, potentially life threatening, toxic cellulitis, beginning usually in the submandibular space and secondarily involving the sublingual and submental spaces as well. The disease is not usually considered to be true Ludwigs angina unless all submandibular spaces are involved. Ref: Shafers textbook of oral pathology 7th edition page 510 