Biomechanical properties of regenerated bone by mandibular distraction osteogenesis / 中华创伤杂志(英文版)
Chinese Journal of Traumatology
;
(6): 67-70, 2002.
Artigo
em Inglês
| WPRIM
| ID: wpr-268434
ABSTRACT
<p><b>OBJECTIVE</b>To study the biomechanical properties of the new bone generated by mandibular distraction osteogenesis (DO).</p><p><b>METHODS</b>A total of 11 healthy adult goats were randomly divided into 2 groups, the experimental group (n=9) and the control group (n=2). For the goats in the experimental group, the bilateral mandibles were gradually lengthened for 10 mm with distraction appliances. Three goats were sacrificed respectively at 2, 4 and 8 weeks after completion of distraction. Compressive, three-point bending and shearing tests were conducted on the standard regenerated bone samples and the whole unilateral mandibular specimens. For the goats in the cont rol group, no operation was made and the whole unilateral mandible was taken as the test specimen.</p><p><b>RESULTS</b>The compressive strength and bending stiffness of the new bone reached the normal level at 4 and 8 weeks after completion of distraction, respectively. But the shearing strength remained significantly weaker than that of the controls at 8 weeks after distraction.</p><p><b>CONCLUSIONS</b>The distraction appliance can be removed and the lengthened mandible should be exposed to adaptive functional exercise at 8 weeks after completion of distraction.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Valores de Referência
/
Resistência à Tração
/
Fenômenos Biomecânicos
/
Regeneração Óssea
/
Cabras
/
Distribuição Aleatória
/
Probabilidade
/
Avanço Mandibular
/
Osteogênese por Distração
Limite:
Animais
Idioma:
Inglês
Revista:
Chinese Journal of Traumatology
Ano de publicação:
2002
Tipo de documento:
Artigo
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