|
KMID : 0361620030380060612
|
|
Journal of the Korean Orthopaedic Association
2003 Volume.38 No. 6 p.612 ~ p.618
|
|
|
Evaluation of Biodegradation and Osteosynthesis in CaO-SiO2-B2O3 Glass-ceramics by Posterolateral Fusion of Rabbit Lumbar vertebrae
|
|
|
|
|
Abstract
|
|
|
Purpose: To compare the biodegradation and osteoconduction properties of Ca0-SiC~-B~ glass-ceramics (CS10B), hydroxyapatite (HA), and tricalcium phosphate (TCP).
Materials and Methods: Porous CS106 implants were prepared by the polymer sponge method. Sir~le-level posterolateral spinal fusans were performed on thirty rabbfts. The animals were divided into three groups by implant material: HA, TCP and CS10B. Radiographs were performed every two weeks. All animals were sacrificed 12 weeks after surgery. The proportion of the area occupied by the ceramics in the final over the initial radiographs was calculated. Uniaxial tensile strength was determined from 7 cases in each group.
Results: The proportion of the area occupied by HA (88.7 16.1 %}was significantly higher than the others (p<0.05), and the proportion of the area occupied by CS106 (28.2f 9.3%) was significantly lower than those of HA and TCP (3719.6%} (p<0.05). The mean values of the tensile strengths of HA (191.433.5 N) and CS10B (182.719.9 N) were significantly higher (p<0.05) than those of TCP (141.1 128.2 N).
Conclusion: CS106 had similar tensile sVengths of the fusion masses as HA, however, rt degraded more rapidly than HA or TCP. These findings suggest CS10B grafts as possible bone replacement materials.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
  
|