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.
Figure 48. Dimensional ridge alterations: 4 weeks
At 4 weeks after tooth extraction, the socket is filled with woven bone. Osteoclasts are present on the outer surfaces at the margin of the buccal and lingual walls, signaling resorption of cortical plates. The resorption of the bundle bone is almost complete. Osteoclasts also line the trabeculae of woven bone present in the central and latera...
Figure 47. Dimensional ridge alterations: 2 weeks
At 2 weeks after tooth extraction, the apical and lateral parts of the socket are filled with woven bone, while the central and marginal portions of the socket are occupied by provisional connective tissue. On the inner and outer surfaces of the socket walls, numerous osteoclasts can be seen. In several areas of the socket wall, the bundle bon...
Figure 30. Quantitative tissue analysis
Trombelli and coworkers monitored the healing of human extraction sockets for a 6-month period and presented a semi-quantitative analysis of tissues and cell populations involved in various stages of socket healing. They showed that granulation tissue was present in comparatively large amounts in the early phases of socket healing. At 6 to 8 weeks, th...
Figure 28. Day 120 : cortical bone & trabecular bone
At 120 days of healing, the entrance of the socket, denoted with an arrow, has become reinforced by layers of cortical bone that are deposited over the previously formed woven bone.
Figure 26. Day 14: woven bone & connective tissue
After 14 days of healing woven bone, which appears as a loose, unstructured network of bone, has started to fill the socket except in the central region, where significant amounts of the provisional connective tissue matrix still remain. This is because the woven bone forms first at the periphery of the socket and gradually extends from the wa...
Pemasangan implan gigi selalu melibatkan pembentukan tulang anyam (woven bone). Tulang ini dicirikan dengan organisasi serat kolagen yang tampak seolah serampangan. Secara mekanik, tulang ini sebetulnya tulang yang lemah. Tulang anyaman dihasilkan ketika osteoblas membentuk osteoid cepat. Semua tulang janin awalnya adalah tulang anyaman. Kemudian, tulang itu diganti dengan tulang lamelar. ...