Common dental defects in the clinic are due to dental caries, so it is recommended to maintain good hygiene habits in daily life, rinsing after meals, brushing teeth in the morning and evening, and often use dental floss, gap brushes, flossing equipment to maintain oral hygiene. Secondly, dietary habits should also be changed to avoid over-eating sweets. In addition, dental defects can also be caused by poor brushing habits, trauma, acid erosion and other factors, it is recommended to develop good brushing habits in daily life, to avoid all kinds of trauma, and to avoid eating more acidic food during eating.