Teeth cleaning is used to remove plaque and tartar (formed by food residue, bacteria, and infection).
A tool called a scaler is used to remove plaque and tartar that is formed in between your teeth and at your gum line.
Regular brushing and flossing can help prevent excessive build up of plaque and tartar, and result in less use of the scaler.
Once tartar forms, dental intervention is the only way to remove it. In order to prevent this, consistent flossing and brushing are highly recommended as well as regularly scheduled cleanings with your dentist.