Layman here but wouldn't a growing tooth be extremely painful and hard to eat with? How exactly does it grow? Does the root grow and then the "tooth material"

Layman here but wouldn't a growing tooth be extremely painful and hard to eat with? How exactly does it grow? Does the root grow and then the "tooth material" after, or does the tooth grow with the root protected inside of it? I'd rather see us just replace all the teeth with something artificial that won't break. Teeth seem like a problem area.