Cologne Classification of Alveolar Ridge Defects (CCARD).
Residual ridge is a term used to describe the shape of the clinical alveolar ridge after healing of bone and soft tissues after tooth extractions. In the present article, a review on Residual ridge resorption is being presented and analyzed. Keywords: Residual ridge, Resorption, Blood clot, Osteoporosis Introduction.In stage 4 the shape of the alveolar crest alters into a thin and sharp knife-edge; the body of the jaw is still. adequate in height and width. Stage 5: Further resorption leads to a low well-rounded ridge which is flat but already reduced in height and. width; the alveolar process is lost.The effects of alveolar ridge resorption can be considered long term clinical sequelae when prosthodontic treatment is involved because prosthodontics requires sufficient alveolar bone volume in order to have successful results (Schropp). Schropp’s study stated that up to 50% of alveolar bone loss occurs after the loss of a tooth.
One fundamental principle of bone physiology is the adaptation of bone mass and bone structure to the levels and frequencies of strain. In the present article, it is shown that the reduction of the alveolar ridge dimensions after tooth extraction is a natural consequence of this physiological principle.Alveolar Ridge Defect When teeth are extracted, a certain amount of bone loss or resorption occurs, usually about 30-60%. This loss is typically three-dimensional in nature, with width loss or horizontal deficiency developing to a greater extent than other types of deficiencies.
Alveolar ridge keratosis is a benign, hyperkeratotic patch or plaque that commonly develops on the retromolar pad or edentulous alveolar ridge. It is believed to represent a response to chronic, frictional trauma (i.e., from opposing teeth, prostheses, or foodstuffs during mastication).
