Immediately after the periodontal treatment is complete, the space between the tooth and a free-standing gum tissue can be treated with different agents to prevent the inflammation and improve outcome of the periodontal treatment.
Most commonly used agent for irrigation is chlorhexidine 0.14% solution. It is extremelly effective against gingival bacterias and have very little side effects. Another common agent is sterile saline solution. While it has no antibacterial effect, it still may be used to remove the debris left after the periodontal scaling in the pockets without worrying about any side effects whatsoever.
It is worth to mention the antibiotics as well. While they are not considered to be an effective irrigation in their liquid solution form, they can be used in a dry form as a depot of antibacterial agent. This is useful when gum defects are deep and gingival inflammation requires time to resolve. Most common antibiotic used for that purpose are Minocycline. It is inserted by a dentist into the pockets 5mm and deeper and does not require removal. While chlorhexidine mentioned above can be used in the soluble form as periodontal pocket irrigation solution or as a daily mouth wash, it also can be inserted in the pockets using the same technique as minocicline.
Either technique for pocket irrigation or the combination of them is an effective addition in fighting the gum disease.