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It is the aim of the study to evaluate the efficiency of "One stage full mouth disinfection" according to the original protocol (Quirynen et al. 1995) in comparison to other approaches considering different scaling strategies and different disinfection concepts. Therefore, a multicenter randomized control treatment will be performed. In total, 204 patients with chronic periodontitis shall be allocated to the following treatment concepts. Group A: quadrant scaling with weekly intervals (Q-SRP; N = 51); Group B: full mouth scaling (FMS; N = 51); Group C: full mouth disinfection (FMD; N = 51); Group D: full mouth disinfection with subgingival glycine air polishing using erythritol powder (FMDP; N = 51). Evaluation of periodontopathic parameters and periodontal pathogens at baseline, 3 months and 6 months shall give evidence about the benefits of concept and the single components of FMD.
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228 participants in 4 patient groups
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