Treatment of Peri-implant Mucositis by Means of Implant Decontamination and Modification of the Implant Supported-prosthesis

Inclusion Criteria: * (1) Presence of, at least, one titanium implant exhibiting peri-implant mucositis, defined as bleeding on gentle probing (0.15 N) in at least one peri-implant site. (2) No signs of loss of supporting bone after initial bone remodelling. In cases where baseline radiograph is available, it will be used for comparison, otherwise a maximum of 2 mm of crestal bone loss will be accepted (5). (3) Single tooth and bridgework restoration with an inappropriate prosthesis design or contour which difficult oral hygiene access (overcontoured prosthesis, prostheses presenting closed embrasures, an abrupt emergence profile or excessive buccal flanges). (4) Presence of \>1 mm of keratinized peri-implant mucosa. (5) A good level of oral hygiene, defined as an O'Leary et al. plaque index \<25% (16). (6) Absence of systemic diseases that could influence the outcome of the therapy (i.e. controlled diabetes, with HbA1c\<7, patients will be included). (7) Non-smoker or light smoking status in smokers (\<10 cigarettes/day). Exclusion Criteria: * (1) Untreated periodontal conditions. (2) Pregnant or lactating women. (3) Patients who received systemic antibiotics in the last 3 months. (4) Patients who received treatment of PM in the past 3 months. (5) Patients receiving corticoids or medications known to have effect on gingival growth i.e. calcium channel antagonists, immunosuppressants or antiepileptic drugs. In those cases diagnosed with peri-implantitis, individualized treatment will be provided, apart from the present study.