HOSA Dental Terminology Practice

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What does retrusion mean?

  1. Extension forward of the jaw

  2. Act of grinding the teeth

  3. Act of retraction or moving back of the mandible

  4. Movement of the maxilla upward

The correct answer is: Act of retraction or moving back of the mandible

Retrusion refers to the act of moving the mandible (lower jaw) backward, which aligns with the definition of retraction. This movement is essential in various dental and orthodontic contexts, as it plays a role in achieving proper occlusion (bite) and alignment of the teeth and jaw. Understanding the term is crucial for dental professionals when diagnosing and planning treatment for malocclusions or other dental issues. The focus on backward movement differentiates retrusion from other types of jaw movements, such as protrusion, which involves movement forward.

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