This document discusses space infections, including:
1. It classifies space infections based on the involved fascial space and describes the microbial aspects and pathways of spread.
2. The surgical anatomy of various fascial spaces like the buccal, submandibular, infratemporal, and pterygomandibular spaces are outlined along with their clinical features.
3. Secondary spaces like the temporal, pharyngeal, and prevertebral spaces are also discussed. Case reports are presented to illustrate routes of spread from odontogenic infections.