Conclusion It can be concluded that bone remodeling occurs after tooth extraction and immediate implant installation
Purpose The objective of this systematic review was to assess the three-dimensional changes in bone tissue after immediate installation of a single implant in a fresh extraction socket in the anterior maxilla .
The clinical use of deproteinized bovine bone mineral on bone regeneration in conjunction with immediate implant installation.
Twenty-one  c.p . titanium screw-shaped implants were immediately installed after extraction and thorough curettage of the alveoli in 15 patients .  Granules of deproteinized bovine bone of 0.25 - 1.0 mm diameter were used to fill the remaining defect when the distance of the defect wall to the implant surface was > 3 mm . Dimensional measurements of the defect height and width were made with a pocket probe . Fourteen sites in the upper jaw and 7 sites in the lower jaw were thus treated . The mean defect depth varied between 7 mm vestibularly and 10 mm mesially . The mucoperiosteal flaps were hermetically closed . At re-entry , the particles were packed and firmly attached but still distinguishable from the surrounding bone . Of the 21 sites treated , 5 sites had an exposure of the implant cover screw during the healing period . An exposure of the granular material occurred in 4 sites , but loss of granules in only 3 . Even in these sites no signs of infection or inflammation of the soft tissues were observed . At re-entry after 6 months , 10 sites were completely and 9 partially filled . For the partial fills , the mean remaining defect height was 1.6 mm ( range : 0.6 - 3.0 mm ) . Two sites showed an increased defect of respectively 2.4 and 4.8 mm . No fixtures were lost . The present results indicate that deproteinized bovine bone is a safe filling material to fill remaining defects around implants installed in fresh extraction sockets
Conclusion It can be concluded that bone remodeling occurs after tooth extraction and immediate implant installation
Purpose The objective of this systematic review was to assess the three-dimensional changes in bone tissue after immediate installation of a single implant in a fresh extraction socket in the anterior maxilla .