Van Dijk LJ, et al. - In patients with untreated adult periodontitis, authors assessed the impact of treatment with a novel pocket irrigator/evacuator device (IED) vs conventional subgingival debridement (CPT), both provided during the initial phase of active periodontal therapy. A significant reduction in probing pocket depth (PPD) and bleeding on pocket probing scores (BOPP) resulted with oral hygiene instructions, supragingival prophylaxis and subgingival lavage with the IED. Nonetheless, the impact does not reach the results of CPT which included the subgingival use of ultrasonic and hand instruments.