Socket preservation : it's placing a bone graft material in the socket bone along with the tooth extraction . It's highly recommended to preven rapid bony resorption after tooth extraction as the soft tissue heals , specially when we prepare the site for future dental implant . By doing the socket preservation , we preserve the bony ridge and maintains enough width and hight to place a dental implant . Sometimes, a resorbable collagen membrane is needed to cover and to contain the graft bone if there is defects cry in the socket wall .