Figure 45. Radiographic height reduction The mean crestal height change as assessed on the radiographs was 1.53 mm.

  Figure 44. Mean height reduction   The mean reduction in height was approximately 1.7 mm.  

      Figure 43. Mean width reduction   The weighted means showed that the clinical loss in width is greater than the loss in height. The mean reduction in width of the alveolar ridge was calculated to be approximately 4 mm.  

Figure 42. Dimensional change in alveolar bone A recent systematic review evaluated the amount of change in height and width of the residual ridge after tooth extraction.

Figure 38. Reduction in dimension This reduction occurs in both the horizontal and the vertical dimension, and as a result the arch is shortened. The amount of tissue atrophy following the loss of a single tooth can be substantial and is variable between different teeth and areas of the alveolar process.