The PerioProtect procedure at Dr. Hennell's office was excellent. Actually, both the procedure and outcome were both excellent. The 3d scan procedure was easy and comfortable. I worried for a day or two using the trays for the first day or two, but I assume my gum swelling went down or the trays conformed, or maybe both. The trays have since been super comfortable. Lining a bead of gel to the trays is easy, and wearing the trays for 15 minutes each day is pleasant. Cleaning the trays with each use is simple, as well. I have had intermittent issues with my gums and teeth for decades. The PerioProtect trays seemed to have largely solved one of my main oral health issues within two weeks of use. In my opinion, PerioProtect is a great product.