Strooker et al. [22]
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RCT Split-mouth design
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16 patients each with 4 mandibular implants and bar retained over denture
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Not reported
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5 months
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Supra-/subgingival scaling (carbon curettes) + polishing (rubber cup) + phosphoric acid gel (35 %) in sulcus for 1 min
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Supra-/subgingival scaling (carbon curettes) + polishing (rubber cup) Once every month
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Test (subject level)
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Once every month
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BOP: 30.5 (27.5) (BL) to 9.7 (10.97) % (5 months)
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GI: 0.92 (0.75) (BL) to 0.34 (0.38) (5 months)
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PD: 2.97 (0.68) (BL) to 2.34 (0.54) mm (5 months)
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Control (subject level)
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BOP: 29.2 (29.44) (BL) to 14.3 (22.47) % (5 months)
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GI: 0.82 (0.8) (BL) to 0.57 (0.6) (5 months)
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PD: 2.83 (0.57) (BL) to 2.48 (0.49) mm (5 months)
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Sign. between group difference in mean GI values and colony-forming units at 5 months
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Porras et al. [20]
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RCT, parallel
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16 patients
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Supra- and subgingival plaque
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3 months
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OHI + mechanical cleansing (plastic scaler, rubber cups, polishing paste) + local irrigation CHX (0.12 %) and topical CHX gel application + 0.12 % CHX mouthrinse twice for 10 days
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OHI + mechanical cleansing (plastic scaler, rubber cups, polishing paste)
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mBI and BOP (%) scores: no sign. differences between groups at 1 and 3 months
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28 implants
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PD ≤5 mm BOP + “incipient” radiographic lesion
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PD values:
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3 implant types (plasma-sprayed Ti/cp Ti (HA-coated Ti)
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Test: 3.27 (0.81) (BL) to 2.71 (0.70) mm (3 months)
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Control: 3.48 (0.61) (BL) to 2.55 (0.72) mm (3 months)
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Changes in mean PD between test and control groups at 3 months were statistically significant (0.56 vs. 0.93 mm)
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Microbiological improvements in both groups
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Thone-Mühling et al. [17]
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RCT, parallel
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11 patients
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BOP + and/or GI ≥1 absence of radiographic bone loss during the last 2 years
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8 months
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OHI + mechanical cleansing (plastic scaler and polyetheretherketone-coated ultrasonic instruments) + topical CHX gel application once + full mouth disinfection (deep scaling in one session + CHX disinfection of tongue and tonsils) + 0.2 % CHX mouthrinse 2×/day and tonsil spraying 1×/day for 14 days
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OHI + mechanical cleansing (plastic scaler and polyetheretherketone-coated ultrasonic instruments) + full mouth scaling in one session
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Test
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36 implants
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BOP: 0.22 (0.11) (BL) to 0.16 (0.09) % (8 months)
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2 implant types
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GI: 0.6 (0.24) (BL) to 0.44 (0.23) (8 months)
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PD: 3.4 (0.68) (BL) to 2.82 (0.59) mm (8 months)
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Control
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BOP: 0.17 (0.19) (BL) to 0.17 (0.11) % (8 months)
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GI: 0.62 (0.36) (BL) to 0.43 (0.37) (8 months)
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PD: 3.49 (0.78) (BL) to 2.84 (0.64) mm (8 months)
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Bacterial recolonization over time
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