What markings are on the PSR probe?

What markings are on the PSR probe?

• A. 2.0, 4.0, 6.0, 9.0
• B. 3.5, 5.5, 8.5, 11.5
• C. 1.5, 3.0, 4.5, 6.0
• D. 3.0, 6.0, 9.0, 12.0

Answer: (B)

PSR probes are designed with four depth indicators that help you quickly gauge pocket depths and assign a screening code. The marks are at 3.5 mm, 5.5 mm, 8.5 mm, and 11.5 mm. These preset points give you immediate reference depths as you probe each sextant, so you don’t have to estimate, and the deepest reading in a sextant is used to determine the PSR code. The other number sets don’t correspond to the standard PSR markings.

PSR probes are designed with four depth indicators that help you quickly gauge pocket depths and assign a screening code. The marks are at 3.5 mm, 5.5 mm, 8.5 mm, and 11.5 mm. These preset points give you immediate reference depths as you probe each sextant, so you don’t have to estimate, and the deepest reading in a sextant is used to determine the PSR code. The other number sets don’t correspond to the standard PSR markings.