Impact of Non Surgical Periodontal Treatment on Growth Differentiation Factor-15 Levels

This trial was conducted in accordance with the World Medical Association's Declaration of Helsinki of 1975, and reviewed in 2016. The local ethical committee approved the study protocol and each patient was carefully informed about the possible inherent risks of the study and provided their informed written consent.

Subjects with a diagnosis of periodontitis were enrolled in this clinical trial. The inclusion criteria were: 1) good condition of general health, 2) a minimum of 2 teeth for each quadrant with a Pocket Depth (PD) ranging from 4-6 mm, 3) no involvement of the furcation, 4) a minimum of six teeth per quadrant, respectively. The exclusion criteria were: 1) periodontal therapy during the last 12 months, 2) assumption of antibiotics during the last 6 months, 3) pregnancy, 4) any systemic condition which might affect the effects of the study treatment, 5) previous or current radiation or immunosuppressive therapies, 5) use of mouthwash containing antimicrobials during the previous 3 months, 6) no use of hormonal contraceptives, 7) medication by anti-inflammatory and immunosuppressive drugs, 8) previous history of hard-drinking, 9) smoking, 10) class II and III tooth mobility. Patients randomly undergo to full mouth SRP or Quadrant SRP