Thank you for that. I guess he will have to do at least one "deep cleaning". They called it "root scaling".I had cleanings performed as well. I had at least 2 cleaning that included ultrasonic devices. I believe these helped and perhaps I should have mentioned them. The ultrasonic devices can clean the hardened plaque that coats the teeth much deeper below the gum line. I do not get the ultrasonic cleanings anymore because they are no longer being recommended.
I just read what @Aymen wrote and I agree with him.
I like to rinse with strong salt water (it takes some time to adapt to the taste). Historically, salt water rinses have been used for gum inflammation.
Are you using a salt like pickling salt for the rinses?