5 Written questions
5 Matching questions
- Types of mandible fractures that require treatment with soft diet only (no MMF or ORIF)
- What forms the border between the symphisis and body of the mandible?
- arterial supply to the mandible
- Ideal time for nasal fracture reduction
- Treatement of posterior table frontal sinus fractures.
- a 1. isolated nondisplaced fractures of the coronoid
2. unilateral nondisplaced subcondylar fracture with normal occlusion
- b within 3 hours of injury or from 3-7 days.
- c external carotid-->internal maxillary-->inferior alveolar
- d An imaginary line drawn at the canines
- e If no displacement or e/o CFS leak, observe and give abx. If displaced, obliteration and possible repair of dural tear. Cranialization reserved for fracture with significant bone loss or comminution.
5 Multiple choice questions
Some say panorex for subcondylar. Otherwise, Towne's view.
1. Temporalis pulls coronoid posterosuperiorly.
2. Lateral pterygoid pulls condyle anteroinferiorly.
3 & 4. Masseter & medial pterygoid pull the angle anterosuperiorly.
5 & 6. Geniohyoid and digastric pull mentum inferoposteriorly.
- 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.
- enophthalmos, dipoloplia, infraorbital nerve hypesthesia
5 True/False questions
Most likely long term outcome from conservative management of orbital blowout fracture (all-comers)? → Cheek hypesthesia. Enopthalmos likely if >50% of floor.
What is shown in a submental vertex view film? →
upper 2/3 of facial bones, maxillary sinuses
What are the boundaries of the zones of the neck for penetrating trauma → diploplia and enopthalmos
type of fracture most often associated with a mandibular body fracture → symphysis and condyle of contralateral side
What are class II and III occlusion? → external carotid-->internal maxillary-->inferior alveolar