The hardest substance in the human body is Dentin. Dentin is a calcified tissue that forms the bulk of a tooth, providing structural support and protection. It is harder than both bone and nail.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
The hardest substance in the human body is Dentin. Dentin is a calcified tissue that forms the bulk of a tooth, providing structural support and protection. It is harder than both bone and nail.