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Correlation between periodontal pocket depth and NO production and number of P. intermedia CFU. Gingival fluid and subgingival plaque samples from periodontal pockets of increasing depth were analyzed for NOx and number of bacteria, respectively. Increased NO production was associated with increased periodontal pocket depth. In contrast, the numbers of P. intermedia CFU in deeper (>6 mm) periodontal pockets decreased considerably from the numbers found in moderate pockets.
