infection control Flashcards
What are important sites in orofacial infections ?
teeth and periodontium
bone and TMJ
soft tissue
What are the routes of infection spread ?
tissue planes
venous
lymphatic
direct erosion
Which spaces can infection can develop in ?
sublingual space mylohyoid space submandibualar space pterygomandibular space parotid space
Describe the route of infection spread from a third mandibular molar ?
periapical abcess breaks through on the lingual side enters sublingual space spreads back as ludwigs angina infections can erode the basiocciput or enter the mediastinum
What is another route fro infection spread ?
submandibular sapce
lateral pharyngeal space
retropharyngeal space
What are the severe consequences if infections are left to develop ?
septicaemia
airway obstruction
intracranial spread
What is the route of infection spread using the cavernous sinus and the emissarry veins ?
infection spreads from the emissary veins to the infraorbital vein and the facial vein
What is the route of infection spread from cavernous sinus and the pterygoid venous plexus ?
infection can spread from the cavernous sinus to the pterygoid venous plexus and the RM vein
What does the pterygoid venous plexus communicate with ?
cavernous sinus via small veins in the Fo.ovale
pharyngeal plexus via small veins
inferior opthalmic vein via the inferior orbital fissure
Why is the alveolar bone likely to fracture ?
it resorbs when endentolous
What does it mean if the mandible fractured at the coronoid ?
unusual mechanism of injury
most mandibular fractures are ?
bilateral
What is the effect of muscle pull on fractures ?
muscle pull can pull the fracture together or further apart
What are functional problems associated with mandibular fractures ?
distubrances in occlusion
nerve damage
Which nerves can be damaged in mandibular fractures ?
infraorbital neve
inferior alveolar
mental nerve
lingual nerve
