Efficacy of the additional use of subgingival air polishing with erythritol powder in the treatment of periodontitis patients: a randomized controlled clinical trial

To date, scarce evidence exists around the application of subgingival air polishing during treatment severe periodontitis. The aim this study was to evaluate benefits non-surgical deep bleeding pockets in stages III–IV periodontitis patients Forty with were selected, and probing depth (PD) 5–9 mm on (BoP) selected as experimental sites. All underwent a full-mouth session erythritol powder supragingival ultrasonic instrumentation. Test group received additional at proportion sites shifting PD ? 4 no BoP 3 months (i.e., non-bleeding closed pockets, NBCPs) regarded primary outcome variable. NBCP comparable between test control (47.9 44.7%, respectively). Baseline 7–9 mm, multi-rooted teeth presence plaque negatively influenced probability obtaining NBCP. does not seem provide any significant clinical advantage achieving closure moderate patients. registered Clinical Trials.gov (NCT04264624). While can play role biofilm removal shallow sites, root surface debridement alone is still choice for initial periodontal pockets.