Clinical Relevance of Different Time of Periodontal Re-evaluation

Treatment of periodontitis follows an incremental step approach. The results after step 1 (Oral Hygiene Instruction and Professional Mechanical Plaque Removal) and 2 (subgingival instrumentation) are re-evaluated in order to understand whether the endpoints of therapy have been achieved. The case reevaluation may be performed at different time intervals, ranging from 2 weeks to 6 months. The aim of this study is to compare two different timing of re-evaluation, in terms of clinical indexes (PPD reduction; Pocket closure) and patients' morbidity (number of further therapies needed).