As per a new report by the scientists, toothpicks were used by the ancient humans about 1.8 million years back. Researchers studied the earliest evidence of primitive humans, which live outside the Africa.

Scientists researched on the jaws of the ancient humans from the Dmanisi Republic of Georgia. They resulted that the ancient humans caused various gum diseases because of the repeated use of toothpick.

The scientists are also finding out the reasons as to why the ancient humans have different shapes of jaws or mandibles.

Ani Margvelashvili, lead author of the study at the University of Zurich, Switzerland, said that the scientist must pay close concentration to the tooth wear according to the age of the individuals.

She said that continuously using of the tooth wear leads to remodeling of bones, which further modifies the shape of the jaw for the whole the lifetime of a person.

Ani said that the person's jaws, on which they researched, were the jaws of a young boy or girl, as the teeth were not worn out of the jaws. A damaged area was also discovered by the scientist between the jaws and the gum, which results that the ancient humans were surely using toothpicks.