FPC 2 Exam 2 – Periodontal Screening And Recording (PSR) And Probing Practice Test

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What is a practical reason PSR uses six sextants?
Correct Answer:
To ensure standardized, efficient screening that covers all regions of the mouth and identifies areas needing full evaluation.
Explanation:
Dividing the mouth into six sextants allows PSR to screen efficiently while still guaranteeing full-mouth coverage. By inspecting each sextant with a single probe pass and assigning a code, the clinician can quickly flag any region that needs more detailed probing and recording, without performing a full mouth pocket depth map for every patient at every visit. This standardization ensures the entire dentition—both anterior and all posterior teeth—is evaluated, so localized disease won’t be missed. If a sextant shows signs of potential periodontal problems, that region is earmarked for full evaluation, guiding referral or treatment planning. This approach keeps the exam time-efficient for busy practices and provides a consistent framework across patients. It’s not about complicating the process or sampling variably; it’s about comprehensive, efficient screening that includes posterior teeth rather than focusing only on the front.

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