While some animals have hair-like structures on their teeth (like bristles on a toothbrush), humans do not.
Here's what might be confusing the question:
* Plaque: This sticky film can build up on teeth and sometimes feel rough, like tiny hairs. It's actually bacteria and food debris, not hair.
* Toothbrush bristles: These can feel like hair when they're new and can sometimes get stuck on teeth.
* Dental floss: This thread can sometimes get stuck in teeth, creating a similar sensation to hair.
Let me know if you have any other questions!