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Ridge alterations: 8 week

Figure 49. Dimensional ridge alternation : 8 weeks At 8 weeks after tooth extraction, the entrance to the extraction site is bridged with cortical bone. The woven bone in the socket is replaced with bone marrow and some trabeculae of lamellar bone. At the crests of the buccal and lingual cortical plates, there are signs of ongoing bone resorption.

Biological events after tooth extraction

Figure 21. Histologic sequence of healing The healing of an extraction socket is characterized by a sequence of histologic events taking place in four distinct stages: inflammation, fibroplasia, mineralization, and remodeling. This cascade of events in the extraction socket is similar to intramembranous bone formation in other types of osseous defects and begins with the inflammation stage. D...