Plaque hardens into tartar over time and cannot be brushed away. It can lead to bleeding gums and bad breath.
Most people are advised to have a cleaning once or twice a year. For braces wearers, smokers and those with gum problems the dentist may suggest shorter intervals.
Brushing twice a day and using floss or an irrigator help maintain the results.
This article is for information only and does not replace a medical examination.
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