Wedge defect, caries and periodontitis have little to do with the toothpaste used, the purpose of toothpaste is mainly to rinse and clean. Wedge defect is painful due to incorrect brushing method, and it has no relationship with the type of toothpaste. In addition, if the oral teeth have periodontitis and caries, it is also not related to toothpaste, but mainly the problem of brushing method. As long as the brushing method is proper, it can also not cause wedge-shaped defect. Therefore, when selecting toothpaste, you should select the toothpaste produced by regular manufacturers and the toothpaste that you think is better in taste. The main thing you need to pay attention to is the brushing method, for example, you should brush your teeth in a circular motion or the Bachmann method, or brush your teeth up and down instead of pulling the saw, which can cause a wedge defect. In addition to the method of brushing, other oral care should be carried out, such as flossing, interdental brushing, and using a flosser for oral health care to achieve fresh breath and healthy teeth.