摘要
研究牛牙周膜宽度和胶原纤维容量比与弹性模量的相关性及其定量关系。通过实验测定新鲜成牛牙周膜标准试件中牙周膜的长度、宽度以及弹性模量。用1%苦味酸天狼星红染色剂使试件断面胶原纤维染色,体视显微镜下观察采图,借助Image pro plus6.0图像分析软件测量并计算纤维容量比。结果表明,成牛牙周膜宽度与弹性模量呈负相关,相关系数r=-0.021,简单线性回归模型为y=71.681-0.021x(宽度);纤维容量比与牙周膜弹性模量呈正相关,相关系数r=1.583,简单线性回归模型为y=-34.944+1.583x(百分比)。所以,成牛牙周膜的弹性模量随着牙周膜的宽度增加而减小,随着纤维容量比的增加而增大。
This experiment was aimed to shed light on the correlation and quantitative relationships between the width of bovine periodontal ligament （PDL） and the elastic modulus and,more over,between the width of bovine PDL and the capacity ratio of collagen fibers. The width and length of periodontal ligament of PDL were determined by stereomicroscope,and the elastic modulus by the materials testing systems. The collagen fibers in cross section of the specimen were stained with 1% Sirius Red F3B in saturated carbazotic acid,and the photo of stained PDL was collected by stereomicroscope. Image pro plus6.0 image analysis software was used to measure and calculate the capacity ratio of collagen fibers. It was found that there is a negative correlation between the width of bovine periodontal ligament and elastic modulus. The correlation coefficient is-0.21 and the simple linear regression model is Y=71.681-0.021x（Width of PDL）;there is a positive correlation between capacity ratio of collagen fibers and elastic modulus. The coefficient correlation is 1.583 and the simple linear regression model is Y=-34.944＋1.583x（The percentage of collagen fibers）. Thus,the elastic modulus of bovine PDL increases while the width of bovine PDL decreases,and it increases while the capacity ratio of collagen fibers increases.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2010年第3期574-577,582,共5页
Journal of Biomedical Engineering
关键词
牙周膜
弹性模量
宽度
纤维容量比
相关性分析
Periodontal ligament（PDL）
Elastic modulus
Width
Capacity ratio of collagen fibers
Correlation analysis
