Alveolar Ridge Resorption

Alveolar Ridge Resorption: Alveolar bone resorption is a normal physiologic response following teeth extraction. The causes of alveolar bone volume loss can occur before dental extraction due to periodontal disease, periapical pathology and trauma to the teeth and bone. (SchroppL et al.2003) (1, 2). Additionally, the traumatic removal of teeth can cause bone loss and must be prevented (1,3). Finally, the alveolar bone suffers atrophy after tooth extraction, which has been well documented (1, 4, 5). The bundle bone at the site obviously will lose its function and disappear (Botticelli et al. 2004, Arau ´jo&Lindhe 2005, Arau ´jo et al. 2008)(10,16).Thus, the healing process of post-extraction sites, including contour alterations caused by bone resorption and remodelling is essential for obtaining functional and esthetically satisfactory prosthetic reconstructions.(1,3) The resorption and remodeling of the alveolar ridge after tooth removal is a natural healing phenomenon, which is physiologically undesirable and possibly inevitable and can negatively impact …show more content…
Maxillary ridges resorb usually more evenly than the mandibular ones because of larger denture-bearing areas, with the palate providing a more equal distribution of mechanical forces. Due to excessive forces originating from natural mandibular incisors and inadequate posterior prosthetic support, the anterior maxillary bone disappears at a faster rate than the posterior part(12), Where a prominent root position is generally accompanied by an extremely fine and fragile vestibular wall that can be damaged during tooth extraction (2,8,9). Swenson(19) stated that after tooth extraction the alveolar process of the maxillae resorbs upward and inward to become progressively smaller because the direction and inclination of the roots of the teeth. Consequently, the older the edentulous maxillae, the smaller is the potential tooth-bearing