Short-term clinical and microbiological evaluations of peri-implant diseases before and after mechanical anti-infective therapies

Objectives: The aim of this study was to evaluate the clinical and microbiological effects of mechanical anti‐infective therapies for mucositis and peri‐implantitis. Material and methods: Subjects with at least one dental implant were assigned to healthy (n=10), mucositis (n=12) or peri‐implantitis (n=13) groups. Implants with mucositis or peri‐implantitis were decontaminated by means of teflon curettes and abrasive sodium carbonate air‐powder, performed by an open flap for peri‐implantitis and without surgery for mucositis. Visible plaque (PI), marginal bleeding (MB), bleeding on probing (BOP), suppuration (SUP), probing depth (PD) and relative clinical attachment level (rCAL) were assessed at baseline and at 3 months after therapies. At the same time points, submucosal plaque samples were collected from each implant and analyzed by Checkerboard DNA–DNA hybridization for 40 bacterial species. Results: All clinical parameters improved at 3 months post‐therapy in mucositis and peri‐implantitis groups (P