| Summary: | Objectives: To evaluate the most effective method for mechanical inter‐dental plaque removal between inter‐dental brushes (IDB) and dental floss (DF), in addition to toothbrushing in patients affected by peri‐implant mucositis (PIM); to identify possible factors related to the patient or to the single implant‐supported element that could influence plaque accumulation and inflammation of peri‐implant tissues. Methods: Forty patients with PIM were recruited. They were randomly assigned to two different groups depending on inter‐dental device used (IDB or DF). At baseline (T0), interproximal area (IA), interproximal emergence angle of the implant crown (A°) and manual dexterity (evaluated with Purdue Pegboard) have been recorded. At 14 days (T1), the inter‐dental cleaning devices have been inverted between groups. After 14 days (T2), the Plaque Index (PI) and Gingival Index (GI) have been recorded. A questionnaire has been submitted to a patient for the analysis of preferences at T0, T1 and T2. Results: Both inter‐dental cleaning devices were effective in reducing PI and GI in the inter‐dental area after 14 days of use. GI reduction was influenced by manual dexterity of the dominant hand. No significant differences were found for PI and GI at the variation of IA and A°. Conclusion: IDB was the most effective method for inter‐dental plaque removal in all subjects regardless of their manual dexterity. DF seems to be more effective than IDB only in subjects with good dexterity.
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