| Summary: | Objective To explore the effect of the periodontal systematic therapy on chronic periodontitis. Methods One hundred patients with chronic periodontitis admitted in our department from January to December 2017 were recruited in this study. All the patients accepted periodontal systematic therapy, including periodontal initial therapy, periodontal surgical therapy, and periodontal supportive therapy. Clinical parameters, such as probing depth (PD), clinical attachment level (CAL), tooth mobility (TM) and bleeding on probing (BOP) were recorded by Florida electronic probe before and at 1 to 6 months after therapy. Statistical analysis was carried out. Results At 6 months after treatment, BOP, CAL and PD were significantly decreased, the positive sites of BOP were obviously reduced, and TM was greatly improved (P < 0.05). There were no statistical differences in the above indicators at 1, 3 and 6 months after therapy. Conclusion Periodontal systematic therapy is effective and stable for chronic periodontitis
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