Teenagers are recommended to use fluoride toothpaste, but those who have dental fluorosis or live in high-fluoride areas can use regular toothpaste. The main purpose of toothpaste is cleaning, and the most important thing to keep your mouth healthy is to brush your teeth the right way. Fluoride toothpaste is helpful in promoting remineralization of tooth enamel in teenagers. If you have tooth allergies, you can use desensitizing toothpaste under the guidance of your doctor. The main role of toothpaste is to clean the teeth, with the pasteurized brushing method, can remove plaque, prevent the formation of dental calculus, is important for periodontal health. Teenagers should insist on brushing their teeth twice a day, morning and evening, for about 3 minutes each time. Attention should also be paid to rinsing the mouth after meals. If there is no plaque, it is recommended to make fluoride toothpaste. If teenagers have sensitive dentin they can follow the doctor’s recommendation to use desensitizing toothpaste; some need to use fluoride toothpaste according to the situation. Teenagers should pay attention to oral health, regular oral examination and teeth cleaning. Seek prompt medical attention if discomfort occurs.