Dr. Kopel speaks on the loss of vertical dimension as relating to adult aging. Dr. Kopel provides examples such as shorter facial proportion, crack at corner of lip, etc. as well as how to restore the patient back to a youthful appearance.
Dr. Karnakova explains the importance of the teeth positioned on the back part of our mouth. Dentists call it posterior dentition. Usually people are concerned about their front teeth, but the back teeth are very important as well. If you lack posterior teeth, you are compromising the vertical height of our face that is supported by our back teeth. When the back teeth are missing the vertical size of the face changes.