California Registered Dental Assistant (RDA) Written Practice Exam

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Indirect vision is typically used for viewing which areas?

  1. Lingual of 7, facial of 25, occlusal of 3

  2. Occlusal of 7, facial of 3, lingual of 25

  3. Facial of 7, lingual of 3, occlusal of 25

  4. Lingual of 3, facial of 7, occlusal of 25

The correct answer is: Lingual of 7, facial of 25, occlusal of 3

Indirect vision is used for viewing areas that are difficult to see directly, especially in the oral cavity. In this question, the lingual of 7 refers to the posterior (towards the back) aspect of the mandibular (lower) premolar teeth. The facial of 25 refers to the anterior (towards the front) aspect of the maxillary (upper) lateral incisor. The occlusal of 3 refers to the biting surface of the mandibular (lower) left molar. These areas are all difficult to see directly, hence the use of indirect vision. The other options are incorrect because they do not include the combination of the correct teeth and their corresponding surfaces. Option B includes the occlusal of 7, which does not exist in the mouth as there are only four molars in each arch. Option C includes the facial of

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