Objectives To evaluate the effects of submarginal instrumentation (SI) with or without adjunctive delivery of sodium hypochlorite (NaOCl)/amino acids and cross-linked hyaluronic acid (xHyA) gel in the treatment of peri-implant mucositis (PM). Material And Methods Forty implants supporting single-unit crowns diagnosed with PM in 40 patients were randomly assigned to test (SI + NaOCl/amino acids and xHyA) or control group (SI alone). The primary outcome was mean BoP change. Full-Mouth Plaque Score (FMPS), Full-Mouth Bleeding Score (FMBS), modified plaque index (mPlI), and probing depth (PD) were assessed as secondary outcomes. Clinical parameters were assessed at baseline, 3 and 6 months. Disease resolution was also recorded. Results Two patients were lost during follow-up while 38 patients completed the study without adverse effects. After 6 months, all clinical parameters improved statistically significantly in both groups (p 0.05); conversely, an initial PD = 5 mm yielded a statistically significant difference (p < 0.05). Disease resolution correlation with test group was statistically significant with a 3.77 odds ratio. Conclusion Within the limitations of the present study, adjunctive delivery of NaOCl/amino acids and xHyA to SI yielded superior clinical outcomes compared with SI alone in the treatment of PM. Trial Registration ClinicalTrials.gov: NCT05926297.
Iorio-Siciliano et al. (2026) studied this question.