Rygh P
Am J Orthod. 1976 Sep;70(3):269-81. doi: 10.1016/0002-9416(76)90333-x.
The purpose of this study was, by introducing transmission electron microscopy, to clarify fine details of tissue reactions in the periodontal ligament on the tension side. A preliminary investigation was undertaken on nine rats in which experimental tooth movement lasted 2 days, 14 days, and 28 days. It was hoped that these new observations might help in the planning and directing of further studies. A marked increase of interstitial spaces between the formed ligament structures of the periodontal ligament was characteristic of the initial phases of tension. The cells and the endoplasmic reticulum within the cells were spindle shaped and oriented in the direction of strain. Occasionally, collagen fibrils were observed within the cytoplasm of fibroblasts. During experimental tension a higher prevalence of elastic fibers was observed and new details of the reaction of collagen fibrils were obtained. The new cementum and bone deposited during the experiment were studied. The preliminary study indicated that electron microscopy may become a valuable tool for the study of the tension side.
本研究的目的是通过引入透射电子显微镜来阐明张力侧牙周膜组织反应的细微细节。对9只大鼠进行了初步研究，实验性牙齿移动持续2天、14天和28天。希望这些新的观察结果可能有助于进一步研究的规划和指导。牙周膜形成的韧带结构之间的间隙显著增加是张力初始阶段的特征。细胞及其内的内质网呈纺锤形，并沿应变方向排列。偶尔，在成纤维细胞的细胞质内观察到胶原纤维。在实验性张力期间，观察到弹性纤维的发生率更高，并获得了胶原纤维反应的新细节。对实验期间沉积的新牙骨质和骨进行了研究。初步研究表明，电子显微镜可能成为研究张力侧的有价值工具。
