Abstract: ObjectiveTo evaluate the efficacy of periodontal-sequence treatment during the orthodontic treatment of periodontitis patients. MethodsA total of 78 periodontitis patients were selected and divided into two groups (n=39). Patients in the control group received conventional orthodontic treatment, while those in the study group received orthodontic treatment combined with periodontal-sequence treatment. After treatment, both groups were compared for the clinical efficacy, periodontal indexes and patient satisfaction degree. ResultsThe study group showed remarkable improvements in periodontal attachment level, plaque index, bleeding index and probing depth, compared with the control group (P<0.05). The total effective rate was 94.9% (37/39) for the study group, which was statistical different from 82.1% (32/39) for the study control group (P<0.05). The patient satisfaction degree was higher for the study group, compared with the control group (P<0.05). ConclusionsThe combination of othodontic treatment and periodontal-sequence treatment is effective for periodontitis patients, which is worth of clinical application.