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
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