The best holistic dentist is you.
Learn how to use Oxygen to heal yourself.
There are many forms such as H2O2 (Hydrogen-Peroxid)
for rinsing and mouthwash.
There is O3 - Ozone
gas (ozone) which heals. Learn and use it.
make a homemade dental tray for the O3.
Also stop using commercial toothpaste immediately and start making your own.
Use 1 part baking soda and 1 part Coconut oil, and flavor with a few drops of essential oils such as Tea tree and clove. Good luck, life should be happy.