Sorry got your troubles Ambra. Rinsing with diluted Glutamine powder may help, which repairs mucosal tissue. It's also good for the digestive tract if swallowed, and for neuropathy. Rinsing with aloe Vera juice has healing properties, and can be swallowed with the same healing effects, but can be a little laxative, which may be good too. Coconut water has healing properties, is a dialectic, coconut oil too, but with oil more caution needs to be taken, so I heard, but check with that. Using soft or baby toothbrushes may be easier on the teeth, gums, and there are sponge type sticks too that can be used.

Good luck.