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What is the function of a mouth mirror in dentistry?

  1. To reflect light to the treatment area

  2. To hold tissues aside during procedures

  3. To extract teeth

  4. To measure periodontal depth

The correct answer is: To reflect light to the treatment area

The function of a mouth mirror in dentistry primarily involves reflecting light to the treatment area. This reflective capability enhances visibility for the dentist during examinations and procedures, allowing for a clearer view of the oral cavity and treatment areas. The unique shape of the mouth mirror ensures that it can be maneuvered easily to illuminate hard-to-see areas, aiding in diagnostics and facilitating various dental tasks. While other instruments play specific roles in dental procedures—such as retracting tissues, which is done by tools like tissue retractors; extracting teeth with extraction forceps; or measuring periodontal depth using a periodontal probe—the mouth mirror is predominantly utilized for its reflective quality. This essential tool is foundational in ensuring that dental practitioners can perform their work accurately and efficiently.