A few missing teeth may have little effect, but too many missing teeth may affect the shape of your face. 1. Generally speaking, a few missing teeth may have little effect. However, it is important to be aware of the habit of chewing on one side of the mouth after the loss of teeth. In the long run, the mucous membrane and muscles of the cheek on the side that is frequently used may become more developed, while the side with missing teeth is prone to facial atrophy. 2. Too many missing teeth may affect the shape of the face. When more teeth are missing, it will cause the vertical distance of the lower 1/3 of the face to become shorter, the face will collapse, the corners of the mouth will droop, and the nasolabial folds will deepen, resulting in the patient’s face to be older. Less teeth will affect the shape of the face specific advice to consult a professional doctor. If the teeth are missing, it is recommended to go to the hospital in time, early formal treatment.