For example, skeleton 262 had extensive new bone formation and severe enamel hypoplasia; skeleton 338 had severe marrow hyperplasia, woven bone
on multiple skeletal elements, and evidence of scurvy; skeleton 208 had sinusitis and cuspal enamel hypoplasia as defined by Ogden et al.
On histological analysis, curved spicules of woven bone
are seen amongst a background of extensive fibrosis, sometimes with large resorptive lacunae walled with osteoclasts.
The intrabony defects were mostly occupied by lamellar bone and woven bone
, and the height of newly formed bone was more than that in the OFD group.
Following a surgical trauma, for example, insertion of an implant, a healing process is initiated where bone formation progresses from a poorly organised woven bone
phase to a remodelled lamellar structure , where the tissue is highly organised on the micrometre and nanometre length scales in adaptation to local biomechanical conditions [15, 25, 26].
The width of fibrous tissue was high, while that of woven bone
As shown in Figures 3 and 4, woven bone
combined with lamellar bone was observed in direct contact with the implant surface without the presence of fibrous tissue, although small microgaps were noted between the bone and the implant.
The osteogenic areas are composed of long trabeculae of woven bone
associated with the same proliferation of fusiform stromal cells in the intertrabecular spaces.
The tissues present in the defect were composed of 23 [+ or -] 2% of the lamellar bone, 28 [+ or -] 1% of the woven bone
, and 56 [+ or -] 4% of the marrow spaces.
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Increased holding power and anchorage of implant as time proceeded may reflect change in the structure of bone located close to the implant with increased maturation by time for both Sr and HA as this process is normal physiological process, Robert et al, stated that "after insertion of an implant, a poorly organized woven bone
with low strength is formed at the interface then maturation of woven bone
to lamellar one with adequate strength take about 6 weeks" (22) (Figure 5).
In osteoblastma there are anastamosing trabeculae of osteoid and woven Bone
, rimmed by single layer of benign osteoblasts.
Polarization will show woven bone
. These changes can also be seen in fibrous dysplasia, hyperparathyroidism, giant-cell tumor, and infantile cortical hyperostosis.