The ______________ is no longer used because it measures reversible gingival and irreversible periodontal diseases within the same index.

Question

BlackTom AI · Accepted Answer

Reviewing the question, we’re asked to identify which index is no longer used because it measures reversible gingival changes and irreversible periodontal diseases within the same index.
Option 1: Community Periodontal Index (CPI). This is a screening tool designed to assess periodontal status across sextants, focusing on pockets, bleeding, and calculus. It is not described as combining reversible and irreversible conditions within one index, so this option does not fit the stated reason.
Option 2: Periodontal Screening and Recording (PSR). PSR is a quick screening method that uses a ball-tip probe to assign codes for overall periodontal health in each sextant. Like CPI, it is intended for screening rather than combining gingivitis and periodontitis in a single index, so this option is not correct for the given rationale.
Option 3: Periodontal Disease Index (PDI). This index historically attempted to quantify periodontal status but has a notable limitation: it includes both reversible gingival (inflammatory) changes and irreversible periodontal (bone and attachment) changes within the same scoring system. This conflation can lead to interpretation issues and has led to it being less favored and largely discontinued in modern practice.
Option 4: Community Fluorosis Index (CFI). This index relates to dental fluorosis, not to periodontal conditions, so it is unrelated to the issue of mixing reversible and irreversible periodontal disease measurements.
In summary, the statement describes the Periodontal Disease Index (PDI) and its drawback of combining reversible gingival changes with irreversible periodontal disease within a single index, which is why it fell out of routine use. The other indexes (CPI, PSR, CFI) serve different purposes and do not share this specific limitation.

The ______________ is no longer used because it measures reversible gingival and irreversible periodontal diseases within the same index. 单项选择题

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