Facial changes occur naturally as we age and lose tonicity in our facial muscles. When the teeth are lost or worn down, facial aging accelerates. The loss of teeth or tooth structure can add 10 or more years to a persons face. This change is a result of a decrease in face height or vertical dimension. This results in several facial changes. The decrease in the angle next to the lips and deepening of vertical lines on the lips create a harsher appearance. As the vertical bone loss progressively and rapidly increases, the bite relationship deteriorates.