A missing tooth may have minimal or no effect, depending on the circumstances. Due to its location within the mouth, its presence might not always be apparent. You may experience this if you have a missing tooth in the back or side of your mouth. Chewing problem: A chewing problem may cause you to eat only on one side of your mouth or eat more slowly if chewing becomes difficult for you. It can result in problems with your jaw bone and facial muscles. Change the face shape: Missing teeth can change the structure of the face, thereby changing your facial shape. Teeth Shifting: If you lose one or more teeth, your teeth may shift.Your bite might adapt to compensate for the space lost by missing teeth. As a result, remaining teeth may shift, leading to tooth sensitivity and chewing difficulty.