It is reputed that periodontal indices remain unchanged over a 24-hour period, with great clinical significance. This preliminary\nstudy analyzes daily index changes. In 56 selected patients, full-mouth plaque score (FMPS), full-mouth bleeding score (FMBS),\nperiodontal screening and recording (PSR) indices, and periodontal risk assessment (PRA) were recorded at baseline and three\ntimes per day (check-I: 08.30, check-II: 11.30, and check-III: 14.30), after appropriate cause-related therapy. Correlation between\nvariables was statistically analyzed by Stata. All periodontal indices improved at the examination phase. Statistical differences were\ndetected for FMPS comparing all thrice daily checks. Statistical differences were detected for FMBS and PRA comparing check-III\nwith check-I and check-II. PSR showed no significant changes. The worst baseline indices produced the widest daily fluctuation at\nthe examination phase. Significant variation of indices is directly related to clinical severity of periodontal conditions at baseline.\nPatients affected by severe periodontal disease may show significantly greater index changes. As indices are routinely recorded\nonly once per day, the index daily variation has clinical significance. This greatly affects therapeutic strategy as correct periodontal\nassessment requires multiple evaluations at standardized times, particularly when baseline conditions are severe.
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