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

What is the name of the standard periodontal probe used for probing?

Williams Probe Florida Probe UNC 12 Probe Ohio Probe

Correct Answer:

UNC 12 Probe

Explanation:

The UNC-12 probe is the standard tool for periodontal probing because it provides precise, uniform 1-mm markings along a 12-mm scale. This design allows consistent measurement of sulcus and pocket depths up to 12 mm, which is essential for accurate charting, monitoring changes over time, and clear communication in clinical records. Its widespread use in textbooks, exams, and daily practice has made UNC-12 the go-to instrument for routine probing. Other probes exist with different marking schemes or uses (for example, some are computerized or have alternative scales), but they are not the standard manual instrument used for routine probing.

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