Winther J E, Qvist H
Int J Oral Surg. 1979 Apr;8(2):114-27. doi: 10.1016/s0300-9785(79)80006-x.
The aim of the present study was to evaluate qualitatively and quantitatively the effect of metatarsal transplantation on the mandibular condylar region. Two series of experiments were performed in four groups of Rhesus monkeys, a fifth group served as a nonoperated control group. The surgical procedures involved either the condyle and part of the ramus or the condyle only. Following the postoperative observation period the skulls of the animals were examined macroscopically, measured anthropologically and measured indirectly on vertical cephalograms. A new method developed by the authors for description of facial asymmetries was used. In all of the operated animals well-functioning joint structures were revealed, though all experimental groups showed the classical deformation features. Continued growth of the transplant was observed in only one case. The facial asymmetries were described as angular deviations from the true symmetry axis. No significant difference between the transplant and the corresponding nontransplant groups was detected for the two kinds of resection performed. However a difference in the degree of asymmetry between the ramus resection group and the condylectomy group was seen. It is concluded that a metatarsal transplant does not prevent the development of facial asymmetry following plain condylectomy or resection of the posterior third of the ramus of the mandible including the condyle.
本研究的目的是定性和定量评估跖骨移植对下颌髁突区域的影响。在四组恒河猴中进行了两组实验，第五组作为未手术的对照组。手术操作包括髁突和部分下颌支或仅髁突。术后观察期结束后，对动物的颅骨进行宏观检查、人类学测量，并在垂直头颅侧位片上进行间接测量。使用了作者开发的一种描述面部不对称的新方法。在所有手术动物中均发现关节结构功能良好，尽管所有实验组均表现出典型的变形特征。仅在一例中观察到移植物持续生长。面部不对称被描述为与真正对称轴的角度偏差。对于所进行的两种切除术，移植组与相应的非移植组之间未检测到显著差异。然而，在下颌支切除术组和髁突切除术组之间观察到不对称程度的差异。得出的结论是，跖骨移植不能防止在下颌骨髁突单纯切除术或包括髁突在内的下颌支后三分之一切除术后面部不对称的发展。
