INBDE (Integrated National Board Dental Examination) Practice Exam

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What type of mandibular fracture is open to the oral cavity, with bone exposed through mucosa near teeth?

Compound
Simple
LeFort II
Open Reduction

The correct answer is: Compound

A compound mandibular fracture is one that is open to the oral cavity, with bone exposed through the mucosa near the teeth. This type of fracture allows the external environment access to the injured area, increasing the risk of infection. In contrast, a simple mandibular fracture does not break through the mucosal lining into the oral cavity. LeFort II fractures involve the maxilla, not the mandible, and are classified based on different anatomic locations. Open reduction refers to a surgical procedure to realign fractured bone segments accurately, it is not a type of mandibular fracture.