摘要
应用扫描电镜时正常咬合和后牙咬合创伤后成年家大和恒河猴的关节盘进行了表面形态观察，对正常家犬关节盘进行拉伸生物力学试验，并讨论了关节盘的渗透性、表面形态结构与关节润滑的关系．作者认为：关节盘表面微观波纹能储留滑液凝胶，增加间隙液流动面积，阻止液膜流失等作用，补偿了关节盘的低渗透性，从而帮助关节润滑。后牙咬合创伤能引起关节盘表面超微结构的改变，破坏正常润滑机制，加速表面组织的磨损、剥脱。
Abstract At the present,few reports about the relationships between surface structure,function and biomechanical properties of TMJ discs were available.This paper was to investigate the surface micro-structure of the discs of adult health dogs and rhesus monkeys resulting from occlusal trauma on posterior teeth by using stereomicroscopy and scanning electron microscopy;and the stress relaxation properties of dog discs by a soft-tissue uniaxial tensile and stress-relaxation test machine.The relationships between permeability and surface structure of the discs,and the joint lubrication were discussed.The authors considered that the micro-undulated configuration of TMJ discs surface appears to aid in storing synovial fluid gel.increase the area of flowing out/in of the interstitial fluid, decrease the loss of the film of synovial fluid,and compensate the low permeability of TMJ discs,to provide lubrication to the joint.The occlusal trauma from posterior teeth can result in the changes of micro-structure of the disc surface destroying the normal mechanism of joint lubrication.
出处
《华西口腔医学杂志》
CSCD
北大核心
1994年第2期97-100,T007,共5页
West China Journal of Stomatology
基金
国家自然科学基金
校青年基金
