Which BPE score indicates a probing depth of 6 mm or more?

The correct answer is based on the basic periodontal examination (BPE) scoring system, which is used to assess periodontal health. The BPE scores provide a numerical representation of the clinical conditions observed in the periodontal examination.

A score of 4 specifically indicates that there is a probing depth of 6 mm or more present in the assessed buccal and/or interproximal sites. This level of probing depth suggests more significant periodontal disease, requiring further investigation and possibly a more comprehensive periodontal assessment.

In contrast, other scores reflect less severe probing depths. A score of 2 indicates the presence of bleeding on probing, but the probing depth would not exceed 3 mm. A score of 3 suggests probing depths of 4 to 5 mm, which are still considered less severe conditions. A score of 5 is reserved for cases that exhibit complex periodontal issues requiring referral to a specialist, though it typically refers to additional findings such as the presence of furcation involvement or significant bone loss, but it does not specifically indicate that probing depths are 6 mm or more. Thus, the correct identification of score 4 aligns precisely with the threshold for probing depths of 6 mm or more.