5 Written questions
5 Matching questions
- arterial supply to the mandible
- Types of mandible fractures that require treatment with soft diet only (no MMF or ORIF)
- What is shown in a Water's view film?
- Long-term complications of orbital blow out
- What are the boundaries of the zones of the neck for penetrating trauma
upper 2/3 of facial bones, maxillary sinuses
Zone 1: thoracic inlet inferiorly and the cricoid cartilage superiorly
Zone 2: inferior border of cricoid cartilage to the angle of the mandible
Zone 3: angle of the mandible to the base of the skull
- c enophthalmos, dipoloplia, infraorbital nerve hypesthesia
- d external carotid-->internal maxillary-->inferior alveolar
- e 1. isolated nondisplaced fractures of the coronoid
2. unilateral nondisplaced subcondylar fracture with normal occlusion
5 Multiple choice questions
- An imaginary line drawn at the canines
- rapid rewarming in circulating water. avoid rubbing and dry heat as both of these predispose to liquefactive necrosis. surgical debridement not indicated for 3 weeks for final demarcation of injury
1. Dislocation into middle cranial fossa
2. Lateral extracapsular displacement
3. Inability to obtain adequate occlusion with closed reduction
4. Open joint with foreign body
1. Bilateral subcondylar fx's in edentulous patient (splinting impossible)
2. When splinting not recommended for medical reasons
3. Bilateral fractures associated with comminuted midfacial fractures
- symphysis and condyle of contralateral side
5 True/False questions
Describe Champy lines of osteosynthesis. →
"ideal lines of osteosynthesis" across the mandibular angle where the compressive and tensile forces from mastication can be countered with only monocortical fixation
Treatment of an anterior table frontal sinus fracture involving the frontonasal duct. → Obliteration vs. close monitoring with CT scans (in reliable patient only).
When do fibrillation potentials appear in Wallerian degeneration? → within 3 hours of injury or from 3-7 days.
Best radiologic view of subcondylar fx →
Some say panorex for subcondylar. Otherwise, Towne's view.
Treatement of posterior table frontal sinus fractures. → Usually involve the body and sympysis-parasymphysis areas.
The fracture line is posterior on the lateral cortex and anterior on the medial cortex. Therefore, the portion of the mandible posterior to the fracture is pulled medially, displacing the fracture. The mylohyoid is the primary muscle displacing the fracture.