How many sextants are used in PSR recording?

• A. Four sextants are assessed; each sextant receives a code from 0 to 4.
• B. Six sextants are assessed; each sextant receives a code from 0 to 4.
• C. Five sextants are assessed; each sextant receives a code from 0 to 4.
• D. Six sextants are assessed; codes range from 0 to 3.

Answer: (B)

In PSR, the mouth is divided into six sextants to screen periodontal health. Each sextant is given a code from 0 to 4 based on what is found with probing (depths and other signs). The highest code observed in each sextant is recorded, and the range includes a code 4 for deeper pockets. Because of this six-sextant approach and the possibility of the deepest category (4), the correct statement is that six sextants are assessed with codes ranging from 0 to 4. The other options are incorrect because they propose a different number of sextants or a max code of 3.