This loss of vertical dimension or bite collapse can result in damage to the jaw joints, severe pain or dysfunction in the jaw joints, frequent muscle tension headaches, tooth fractures and tooth loss, and aggravation of periodontal disease if present. Other resulting issues are shortening of the lower face height, an inverted smile (corners of the mouth sag), a toothless smile, frequent cracking or chapping at the corners of the mouth (angular cheilitis), and problems chewing.
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.