American Journal of Orthodontics
Orthodontic extrusion of teeth with advanced periodontal disease was evaluated in beagle dogs. Surgical destruction of one third to one half of the attachment apparatus and the inducement of chronic periodontal disease was accomplished on the hemisected mesial roots of the mandibular premolars. The roots on one side of the mandible were extruded to...
A tissue culture technique which permits the simultaneous measurement of collagen synthesis and bone resportion has been developed. Cultured neonatal mouse calvaria undergo resorption when stimulated by a number of agents including parathyroid hormone, vitamin D, and prostaglandin E 2. Mouse calvaria are of sufficient size to measure the extent of ...
In een proef op 'het Spelderholt' is op het einde van de legperiode de botsterkte bepaald van de tibia (scheenbeen) van leghennen gehouden bij twee lichtschema's en twee temperaturen. Temperatuur en lichtschema lijken invloed te hebben op de sterkte van de tibia.
Archives of Oral Biology
The osteogenic potential of different surface charges was studied by implanting uncharged, negatively charged and positively charged Sephadex beads subperiosteally on the buccal aspect of the mandible. The implant sites were examined 1, 2, and 4 weeks later. New bone formation was observed around the positively charged beads at 2 weeks. An amorphou...
In een Spelderholt-proef is gekeken naar mogelijkheden om via voermaatregelen het optreden van pootproblemen bij Peking-eenden te verminderen. Deze maatregelen betroffen de verschijningsvorm, beschikbaarheid en samenstelling van het voer. Tevens is het effect van deze aanpassingen op technische resultaten en slachtrendementen onderzocht.
Archives of Oral Biology
The study was designed to investigate the process of bone formation caused by implantation of octacalcium phosphate as well as stability of the bone formed at the alveolar ridge. Synthetic octacalcium phosphate was implanted into a subperiosteal pocket in the rat mandible. Bone formation at the alveolar ridge was examined radiographically and histo...
Journal of Orthopaedic Science
The interface of implanted True Bone Ceramics (TBC; sintered bovine bone; Koken, Tokyo, Japan) was examined. In the primary experiment, TBC was implanted into the bone marrow of a rabbit's femur. The extracellular matrices (types I, II, and III collagens and fibronectin) of decalcified specimens collected 1–48 weeks postoperatively were immunohisto...
Journal of Bone and Mineral Metabolism
Cbfa1, originally cloned from fibroblasts, was preferentially expressed in the osteoblast lineage. Cbfa1-deficient mice completely lacked both intramembranous and endochondral ossification, and osteoblast differentiation was blocked in the mutant mice. Further, the Cbfa1 expression in nonosteoblastic cells induced osteoblastic markers in vitro. The...