1, the upper incisors are yang, the lower incisors are yin, the upper incisors represent marriage, the left incisors represent father, and the right incisors represent mother. So the left front teeth are crooked, the father's behavior is not correct, the right front teeth are crooked, and the mother's behavior is not good. The upper front teeth are tilted to both sides, which is not harmonious between men and women.
2. The front teeth represent the pituitary gland, which is in charge of the endocrine system of the human body and indirectly or directly affects the secretion of human sex hormones. The front teeth also reflect the establishment of the body. When the front teeth are white and bright, it is a sign of good health and vitality. On the contrary, the breath is weak.