You should get specific instructions from your dentist or hygienist on how to correctly brush and floss. But in general, recommendations for preventing and removing tartar or plaque on your teeth include:
Dental sealants are a means of protecting teeth from decay by sealing over healthy pits, fissures, and grooves in the teeth. Well-balanced meals are also recommended for maintaining healthy teeth and gums.
For more information, see: Oral hygiene
Tartar and plaque on teeth; Calculus