Because a large number of clinical research and investigation results show that dentition and tooth dislocation are related to heredity. In clinical life, we can see that many children's teeth are almost exactly the same as those of their parents, and they are indeed hereditary.

Clinically, the most common deformity is malocclusion, which is what the common people call the sky. It is very important for doctors to have a genetic history. If there is a family genetic history, it may be more difficult to correct malocclusion, such as covering the sky. Found deciduous teeth, need to be corrected immediately. However, when changing teeth after deciduous teeth, the ground coverage day may recur and need to be treated again. For more serious cases, such as stubborn family hereditary cases, it may appear again after the child's teeth are completely changed, or even after adulthood. At this time, it is suggested that patients should undergo related surgical treatment, that is, orthodontic and orthognathic treatment. General doctors will consider the genetic history of patients when examining, diagnosing and making plans, because it determines the difficulty, effect and stability of correction in the future. Children with a history of malocclusion are not easy to correct, and it takes a long time, and the possibility of recurrence is greater.