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Table 5 Analytical Models of Caries Increment

From: Design of the Prevention of Adult Caries Study (PACS): A randomized clinical trial assessing the effect of a chlorhexidine dental coating for the prevention of adult caries

Model

Description

Crude increment

One event (change) per tooth surface is counted; no reversals are counted

Cumulative crude increment

Multiple events are possible on a tooth surface; no reversals are counted

Net increment

One event per tooth surface is counted; reversals are included

Cumulative net increment

Multiple events per tooth surface are possible; reversals are included