> Ancient people used twigs and kinds of different fibers to clean the teeth. My mother said that she used to clean her teeth by cutting a twig from a neem tre

> Ancient people used twigs and kinds of different fibers to clean the teeth. My mother said that she used to clean her teeth by cutting a twig from a neem tree. This is the 1930s and 40s. She's old, but I wouldn't refer to her as an "ancient person".