Depending on the condition of the gums and teeth. If you have any problems, then you should go to the dental examinations, if your teeth are healthy then every 6-12 months.
Brushes with thin synthetic fibers with the mark SOFT or MEDIUM, that you can reach teeth from all sides.
It’s just as important as brushing your teeth. Most caries (dental faults) occur just between teeth, which are hardly accessible for brush sites. By flossing teeth, we remove the residual food and bacteria between the teeth, and make the contact surfaces of the tooth less sticky.
Removing calculus is not harmful to your teeth in any way, and it needs to be removed if there is precipitation. The calculus around the neck of the tooth suppresses the gingiva, causes its inflammation and reduces the possibility of oral hygiene.
Ask a doctor and answer will arrive as soon as possible.