Clinical Effectiveness of Oxygen-Releasing Oral Gel as an Adjunct to Scaling and Root Debridement in Patients With Severe Periodontal Pockets: A Randomized Clinical Trial

The goal of this clinical trial is to learn if adding an oxygen-releasing gel to a deep dental cleaning treatment can improve gum health more than deep cleaning alone, in adults with severe gum disease. The main questions it aims to answer are: 1. Does adding oxygen-releasing gel to deep cleaning reduce the depth of gum pockets more than deep cleaning alone? 2. Does adding oxygen-releasing gel to deep cleaning lead to greater improvement in gum attachment, less gum recession, less plaque, and less bleeding, compared to deep cleaning alone? 3. Do any improvements last for up to 6 months? Researchers will compare one side of each participant's mouth, treated with deep cleaning plus oxygen-releasing gel, to the other side, treated with deep cleaning alone, to see if adding the gel produces a bigger and longer-lasting improvement in gum health. Participants will: * Attend 5 visits over 6 months * Receive deep cleaning (scaling and root debridement) on both sides of the mouth at visits where it is needed * Have one side of the mouth randomly chosen, using a method similar to drawing lots, to also receive the oxygen-releasing gel * Receive the gel twice: once at the first visit, and again one week later * Have their gum measurements checked at each visit