According to the English researchers they have discovered a new bacterium that contributes to tooth decay and gum disease.

The new bug called “Prevotella histicola” is being considered a brand new species of bacteria that like hundreds of other bacteria thrives in human mouth.

There are millions of bacteria in every milliliter of saliva and more than half of them are unknown.

This new finding may prove quite helpful for the scientists to understand those changes in bacterial activity that becomes the cause of mouth problems.

Professor William Wade of King’s College London told that he had found three strains of the new organism that lurked in flesh lining of the mouth and named as “histicola’.

“Different varieties of microbes that include histicola fungai, bacteria and protozoa are found in a healthy human mouth,” Professor Wade said

“The bacteria are found more than any other microbes as they are around 100 million in every milliliter of saliva,” he further added

In these bacterial species, the Prevotella family is related to many oral diseases and infections in other parts of the body.

Professor Wade told that he had found that new bug in normal healthy tissue as well as inside oral cancer cells. In humans, tooth decay and gum diseases are quite common and they are linked to changes in the microbial found in mouth.

The finding has been reported in the International Journal of Systematic and Evolutionary Biology.