The best way to prevent toothache is to pay attention to the teeth, while actively protecting oral hygiene and maintaining oral hygiene, the best way to maintain oral hygiene is to brush your teeth, brushing needs to be done 3 times a day for at least 3 minutes each time, the recommended time each time is after eating which is after breakfast, lunch and dinner should be brushed, and it is also recommended to brush your teeth after eating some food to ensure hygiene and cleanliness in the mouth. In addition, it is necessary to reduce the intake of food with too much sugar, which can also protect the teeth, and it is also necessary to go to the professional dentistry department for regular check-ups and dental cleaning every year, which is commonly known as scaling, during which it is possible to check whether there is tooth decay or other problems, and if there is, it needs to be treated as soon as possible.