Principles of Vibration: Tongue, Benson H.: 9780195106619: Amazon.com: Books Interior vs. Coronal In phonetics, speech sounds are classified according to where and how they are produced in the mouth. One important way to describe them is by their place of Ludwig's angina is a rapidly progressing cellulitis of the submandibular, sublingual, and submental spaces, most commonly originating from infected lower molars. The infection spreads through fascial planes rather than forming pus initially, Microbiota of the Tongue and Systemic Connections: The Examination of the Tongue as an Integrated Approach in Oral Medicine