According to the latest findings, pineapple and spinach damage the teeth.
Pineapple apples and oranges are bad for our teeth. The same goes for spinach. This is due to the high calcium needs to be harmful to the teeth. Nicotine, red wine and caffeine are also harmful to teeth.
The best thing for your teeth is coconut oil. The fat of the coconut specifically attacks caries and has an antibacterial effect.