An oral delivery device for use in treating a periodontal disease affecting a periodontal pocket of a patient. The device is inserted into the periodontal pocket at a frequency of about once every 4 days to about once every 6 weeks. The device is a controlled release solid unit dosage form suitable for insertion into a periodontal pocket of a patient, comprising a therapeutically effective amount of an active ingredient selected from (i) at least one anti-inflammatory agent, (ii) at least one antibacterial agent, and (iii) the combination of at least one anti-inflammatory agent and at least one antibacterial agent.
