Zeza B, et al. – The purpose of this research study was to comparatively assess the outcomes of professionally administered plaque removal (PAPR) and photodynamic therapy (PDT) in the treatment for experimentally induced gingivitis (G) and peri–implant mucositis (p–iM). The findings suggested that G and p–iM can be effectively treated with PAPR+PDT. At shallow (1–2 mm) sulci, implants might display a higher number of residual bleeding sites when compared to teeth, and the number of residual bleeding sites following PAPR+PDT rises with increasing probing depth (PD) around either teeth or implants.