Teeth don’t repair themselves like other body organs because teeth are made of enamel, which is the hardest substance in the entire human body.
Also question is, can your brain heal itself?
Your brain does eventually heal itself. This neuroplasticity or “brain plasticity” is the more recent discovery that gray matter can actually shrink or thicken; neural connections can be forged and refined or weakened and severed. Changes in the physical brain manifest as changes in our abilities.
Also, what is the hardest part of the body to heal? Nerves typically take the longest, healing after 3-4 months. Cartilage takes about 12 weeks to heal. Ligaments take about 10-12 weeks to heal. Bones take about 6-8 weeks to heal on average.
Then, which organ can regenerate itself?
The liver