Exclusion criteria
SYSTEMIC DISEASE, PLAQUE
Exclusion criteria were systemic diseases, pregnancy and lactation, smoking, alcohol use, plaque index >20%, gingival recession Class 3 or 4 Miller, and PPD >5 mm.Patients were invited to participate in the study after being fully informed. Informed consent was obtained from all participants. The study was approved by the Ethical Committee of the Hamadan University of Medical Science. The approval ID is IR.UMSHA.REC.1400.114.