Dental calculus (tartar) is plaque that has been calcified by calcium phosphate salt compounds in saliva. Plaque needs to exist in the mouth for about 1 week to transform into tartar.

Regular brushing cannot remove all tartar. Therefore, tartar can only be cleaned by dental treatment such as scaling and polishing with specialized tools.

Improper oral hygiene can lead to dental problems including tartar. Have regular dental check-ups and scaling every 3-6 months.

Tartar usually forms in layers on the tooth surface near the gums, and is opaque white or pale yellow. In many cases, tartar can be seen as black. You should practice good oral hygiene to prevent plaque and visit your dentist every 3-6 months.