The World Health Organization recommends the following measures for maintaining good dental health:
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Brush your teeth twice a day for at least two minutes, with a manual or electric toothbrush.
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Clean every tooth surface using circular movements.
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Use a toothpaste that contains fluoride.
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Do not rinse the toothpaste away straight after brushing – instead, spit out the excess and leave the rest on your teeth so that the fluoride can be absorbed.
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Replace your toothbrush every three months.
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Clean between your teeth at least once a day with floss or interdental brushes.
If you wear orthodontic appliances, it is recommended to brush at least one extra time a day, or after every meal. It is important, however, not to brush too aggressively.
This answer is for general information. Your own case needs an examination by an orthodontist.