Give OP some time, and at least it might be able to arrest the recession. If the recession is bacteria based, then it will help for sure.
You know I've started taking Food Grade (Permaguard) Diatomaceous Earth. I can't even believe what this is doing for my hair,nails and skin. I've read that it does amazing things for dental health too. Might be something you should google and see if it's for you.
The best way to take it is put a tablespoon in pure water. It will saturate the water, and you keep adding more water. Change the earth every 6 months or so. It's very cheap.
I just know you can stop this.