摘要
目的 :研究山羊颞颌关节 (TMJ)间接性损伤后关节结构的变化。方法 :用自制撞击装置造成山羊双侧颞颌关节间接性损伤 ,分别于伤后 2h、7d、1月、3月行X线断层摄影后处死取材 ,并进行组织学观察 ,正常关节作为对照。结果 :X线断层摄片发现 ,TMJ损伤后关节腔模糊 ,腔隙缩小 ,髁突表面不平 ,结构不清 ,其位置由颞下凹正中逐渐偏向后。组织学观察发现 ,伤后早期 1月内关节组织分别出现关节凹、髁突表面纤维软骨破坏 ,关节盘纤维组织挫裂 ,关节腔内出现血肿等 ;晚期 3月出现髁突表面软骨组织破坏、吸收 ,关节盘严重扭曲、变形。结论 :一定程度的TMJ损伤可以导致TMJ内紊乱和TMJ骨关节病等后遗症的发生。X线断层摄影技术是一种较好的动态观测TMJ结构和形态变化的方法。
Objective:The aim of this study is to investigate the structural changes of goat′s temporomandibular joints (TMJs) after indirect trauma.Methods: The trauma to the goat′s TMJ achieved under an impact to the right and left mandibular angles using a self-made device. These goats were killed after 2 hours, 7 days, 1 month and 3 months. The goat′s TMJs were examined using tomography before being killed, and also checked by using a histological method. The normal temporomandibular joints were treated as the control. Results: ①The X-ray tomograms: In the early post-trauma stage, the articular cavities were dimmed, and the joint spaces were decreased; the articular surfaces were not smooth, and the structures of TMJ were not clean. Moreover, the stations of the condyle were moved from middle of the fossa to the posterior fossa in the later stage. ②The histological examination: The condyles exhibited eroded surfaces with osteophytes, the discs were thinned or perforated, and the temporal surfaces were thick-end and the linings were separated. Conclusion: The indirect trauma on TMJs of goats can cause the TMJ internal derangement and the osteroarthrosis of TMJs. The X-ray tomography is a very useful method in the long-term monitoring of bone changes in TMJs after trauma.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2001年第2期109-112,共4页
West China Journal of Stomatology
基金
陕西省科学技术研究发展计划资助!项目 (编号2 0 0 0K14 G13)
全军九五指令性课题资助!项目 (编号 96L0 47)
