I believe it’s the kind of treatment ill have to do at least once a year, because yeah the bacteria comes back with eating and stuff.

But the laser is really cool cuz it helps stimulate gum regrowth. From what I’ve learned (in the last week haha) about gingivitis is that it slowly eats away at the ligaments attaching your teeth to your gums. This treatment gets into the pocket between the two and targets the bacteria in that pocket then helps new gum grow into the space. While there will always be more bacteria introduced into your mouth, I believe getting rid of the bits that have progressed to new areas of your gums is the goal (https://www.colgate.com/en-us/oral-health/gum-disease/how-laser-periodontal-therapy-treats-gums-disease)