Treatment of Peri-implant Mucositis by Sodium Hypochlorite Gel and Cross-linked Hyaluronic Acid Gel

The aim of the study is to evaluate the clinical results of the combination of a sodium hypochlorite-based gel (NaOCl gel) and a cross-linked hyaluronic acid-based gel (HA gel) as an adjuvant to Non-Surgical Mechanical Debridement (NSMD) in the treatment of mucositis, after 6 months of follow-up (Clean & Seal concept). Following the selection through inclusion and exclusion criteria, all patients will be randomly assigned to Test NaOCl-based gel + NSMD + HA-based gel) or Control (NSMD) group.

Patients will be recruited at Department of Periodontology (Univeristy of Naples "Federico II") and at Department of Periodontology (University of Budapest "Semmelweis").

Subsequently, after recording of the clinical parameters (BoP, FMPS, FMBS, PD), in the Test group a NaOCl-based gel will initially be applied in the peri-implant sulcus for 30 seconds, without the need for flushing. Furthermore, mechanical therapy (NSMD) will be performed by means of an ultrasonic scaler with a plastic tip. Finally, HA-based gel will be applied in the peri-implant sulcus by means of a blunt-tipped needle. Conversely, Control group will be treated only through the NSMD.

All clinical parameters (BoP, FMPS, FMBS, PD) will be recorded again after 6 months for the final evaluation. Data analysis will be performed using statistical software.

Inclusion criteria

• Age ≥ 18 years;
• Non-smokers and smokers ( ≤ 10 cigarettes/day);
• Presence of at least 1 implant in mucositis, clinically and radiographically detected;
• The implant in mucositis (tissue-level or bone-level) must support a fixed prosthetic device (single crown, 3-element bridge), cemented or screwed.

Exclusion criteria

• Cancer patients;
• Uncontrolled diabetic patients;
• Prolonged antibiotic treatment or anti-inflammatory treatment in the previous 6 months;
• Pregnant or breastfeeding patients;
• Implants that support mobile prosthetic products;
• Implants in peri-implantitis, detected clinically and radiographically.