The absence of gaps in milk teeth does not usually affect permanent teeth. If you are in the early development of milk teeth, the teeth are more tightly arranged, usually there is no gap. With the gradual growth of age, the upper and lower jaws will gradually develop and become larger, because the size of the milk teeth does not change, thus appearing gaps, belong to the normal physiological gap, and related to the development of permanent teeth later. If there is no gap in the late development of milk teeth, usually there is no need to worry too much, because the jawbone will increase rapidly at this time to create conditions for the eruption of permanent teeth, or even if there is no gap, the eruption of permanent teeth is not too big and the jawbone develops normally, the teeth will be arranged normally, and it will not affect the development of permanent teeth. When there is no gap between the milk teeth, there is no need to worry too much, but if there is an abnormality in the development of permanent teeth, you should consult a doctor in time for standardized treatment.