Can you tell me docs, is flossing neccessary everyday to keep away cavities?

Yes: Yes, flossing disrupts the bacteria so they have to exert their energy into starting the colonies again and not creating acid that attacks your teeth.

Cavities: can be prevented by proper diet, oral hygiene which includes flossing, and regular visit to the dentist. The bristles of the brush cannot eliminate the food debis interproximally where the floss can fit. Eliminating the source of bacterial proliferation can help eliminate the progression not only of cavities but also protects the health of gums and bone to keep your teeth for a lifetime!