is very harmful to the gingival health. It should be removed by brushing teeth. Calculus is the hard deposits around teeth which can be removed by scaling done by a dentist
only. To prevent further problems brush twice daily, floss your teeth once daily, clean your tongue using a tongue cleaner after brushing, change your tooth brush once in 3 months,scaling of teeth should be done once in 6 months, consult your dentist once in 6 months.