INBDE (Integrated National Board Dental Examination) Practice Exam

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What describes a complete craniofacial disjunction of the midface?

  1. LeFort II

  2. LeFort III

  3. Compound

  4. ORIF

The correct answer is: LeFort III

A complete craniofacial disjunction of the midface is referred to as a LeFort III fracture. This type of fracture involves separation of the entire midface, including the nasal, ethmoid, zygomatic, and maxillary bones from the skull base. A LeFort II fracture describes a pyramidal-shaped fracture separating the maxilla and the pterygoid plates. Compound refers to a type of fracture that involves a broken bone sticking out through the skin, and ORIF (Open Reduction Internal Fixation) is a surgical procedure used to repair and stabilize a broken bone using internal fixation devices like plates, screws, or rods.