Efficacy of a bioflavonoid-enriched herbal versus 0.12% and 0.2% chlorhexidine mouthwashes in reducing peri-implant inflammation and subgingival Porphyromonas gingivalis carriage in patients with peri-implantitis

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BACKGROUND: This study compared the efficacy of a bioflavonoid-enriched herbal mouthwash versus 0.12% and 0.2% chlorhexidine (CHX) in reducing peri-implant inflammation and subgingival Porphyromonas gingivalis (P. gingivalis) carriage among patients with peri-implantitis. METHODS: In all, 67 individuals diagnosed with peri-implantitis were enrolled. Demographic and implant-related data were retrieved, and subgingival biofilm samples were analysed for P. gingivalis. All patients underwent non-surgical mechanical debridement (MD) and were then randomised into three groups: test group (bioflavonoid mouthwash, n = 22), control group 1 (0.12% CHX, n = 23), and control group 2 (0.2% CHX, n = 22). Participants rinsed with 15 ml of the assigned solution twice daily for 90 days. Clinical parameters, including modified plaque index (mPI), modified bleeding index (mBI), probing depth (PD), and crestal bone loss, were recorded at baseline and after 90 days. Statistical significance was set at P < 0.05. RESULTS: Significant reductions in mPI, mBI, and PD were observed across all groups compared with baseline (P < 0.05). The follow-up scores for these parameters were significantly lower in the test group compared with both CHX groups (P < 0.05). At baseline, P. gingivalis was detected in 79.1% of participants. After 90 days, P. gingivalis carriage was lower in the test group (13.6%) compared with control group 1 (50.0%) and control group 2 (54.5%). CONCLUSION: Prescription of a bioflavonoid-enriched herbal mouthwash following MD is more effective in reducing peri-implant inflammation and subgingival P. gingivalis compared with 0.12% and 0.2% CHX rinses.

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