The aim of this clinical study was to evaluate the clinical efficacy of using perio flow adjunctively with mechanical instrumentation on periodontal parameters and halitosis.

Sixty patients who presented with 4-6-mm probing pocket depth (PPD) were recruited for the study. Patients were randomly assigned to glycine powder air-polishing (GPAP) or control groups. For both groups PPDscores were recorded at the baseline and 1 month. Volatile sulphur compound (VSC) values were measured by a halimeter at the baseline, immediately after treatment, and at 7 days, 14 days and 1 month.

Inclusion Criteria:

• In the present trial, patients who had at least three teeth with 4-6-mm periodontal pockets.

Exclusion Criteria:

• acute infectious oral lesions,
• furcation defects,
• using antibiotics for any reason in the last 4 weeks,
• periodontal treatment in the last 6 months and
• pregnant or lactating patients.