Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: osteogeneza

Sortuj według:

Ogranicz wyniki do:

Stimulation of osteogenezis to fight with osteoporozis

Pawlikowski M.

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering

2018

nr 24

1--5

Osteoporosis is not only process of destruction of bones. Elements removed from bones may migrate to soft tissue and crystalize there leading to many health troubles and often to death. Phenomenon of osteogenesis were described as biological- mineralogical reactions. Discussion concerning osteogenesis is presented in frames of bone creation and destruction. One can conclude the natural processes of none formation is possible use to fight with osteoporosis.

Osteoporoza nie jest wyłącznie procesem niszczenia kości. Pierwiastki wyprowadzane z kości mogą migrować do tkanek miękkich i tu krystalizować powodując wiele problemów zdrowotnych a nawet śmierć. Przedstawiono proces osteogenezy(kościotworzenia) jako zjawisko biologiczno-mineralogiczne. Dyskusje dotyczącą osteogenezy przedstawiono jako tworzenie i niszczenie kości. Stwierdzono, że naturalne procesy formowania kości można wykorzystać do walki z osteoporozą.

In vivo study of human mandibular distraction osteogenesis. P. 2, Determination of callus mechanical properties

Bonnet A. S., Dubois G., Lipinski P., Schouman T.

Acta of Bioengineering and Biomechanics

2013

Vol. 15, no. 1

11--18

Distraction Osteogenesis (DO) is a surgical technique used to reconstruct bone defects. To improve the current treatment protocols, the knowledge of the mechanical properties of the bone regenerate is of major interest. The aim of this study, constituting the second part of our paper previously published in Acta of Bioengineering and Biomechanics, was to identify the elastic and viscous properties of bone callus. This is done in the case of a mandibular DO by analyzing the experimental measurements of the forces imposed on bone regenerate by a distraction device. The bone transport forces were evaluated thanks to strain gauges glued on the distraction device. A rheological model describing the callus constitutive behavior was developed and the material constants involved were identified. The time-dependent character of the bone regenerate mechanical behavior was confirmed. The viscous response of the mesenchymal tissue was described by two characteristic times. The first one describing the viscoelastic callus behavior was estimated to be 140 seconds and the second one representing the permanent bone callus lengthening was evaluated to be 5646 seconds. An average value of 0.35 MPa for the regenerate Young’s modulus was deduced. The elastic properties of mesenchymal tissue found are in agreement with the rare data available in the literature.