Treating aphthae with propolis
Have my dentist got a great tip against aphthae, propolis! It is a product made by bees to prevent fungi and diseases from spreading in the hive. It has an antiseptic effect.
The propolis as a solution (buy it from the beekeeper, not in the pharmacy or something) with a cotton swab so 1-2 times a day and it works immediately.
You can eat and drink again without it burning or hurting. For me, the whole haunt with the aphthae was over after 4 days.
Hope to help other long-suffering.