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 .
Bone healing following immediate versus delayed placement of titanium implants into extraction sockets: a prospective clinical study.
PURPOSE The aim of this study was to compare bone healing and crestal bone changes following immediate ( I m ) versus delayed ( De ) placement of  titanium dental implants with acid-etched surfaces ( Osseotite ) in extraction sockets . MATERIAL S AND METHODS Forty-six patients were r and omly allocated to the I m or De group ( n = 23 per group ) and received 1 implant at the incisor , canine , or premolar region of the maxilla or the m and ible . The implants were placed an average of 10 days following tooth extraction in the I m group and approximately 3 months after extraction in the De group . The widths ( parallel and perpendicular to the implant ) and the depth of marginal bone defects around the implants were measured clinical ly just after placement and 3 months later at the abutment surgery . The crestal bone changes mesially and distally to the implants were evaluated radiographically by linear measurements . RESULTS The survival rates were 91 % in the I m group and 96 % in the De group . In the I m group , the mean reductions in parallel width , perpendicular width , and depth of the largest defect of each implant amounted to 48 % ( from 4.4 to 2.3 mm ) , 59 % ( from 2.2 to 0.9 mm ) , and 48 % ( from 6.9 to 3.6 mm ) , respectively . The corresponding mean reductions in the De group amounted to 39 % ( from 3.1 to 1.9 mm ) , 77 % ( from 1.3 to 0.3 mm ) , and 34 % ( from 4.4 to 2.9 mm ) . The reduction over time was statistically significant in both groups ( P < .04 ) . For both groups , a higher degree of bone healing was achieved in the infrabony defects ( > 60 % for depth ) than in dehiscence-type defects ( approximately 25 % ) . Furthermore , 70 % of the 3-wall infrabony defects with a parallel width of up to 5 mm , a depth of maximum 4 mm , and a perpendicular width of maximum 2 mm had a capacity of spontaneous healing within a period of 3 months . DISCUSSION AND CONCLUSION New bone formation occurs in infrabony defects associated with immediately placed implants in 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 .