Key Lab for Oral Biomedical Engineering of the Ministry of Education, Wuhan University, People's Republic of China.
Int J Oral Maxillofac Surg. 2010 Apr;39(4):388-93. doi: 10.1016/j.ijom.2010.01.008. Epub 2010 Feb 9.
The purpose of this study was to evaluate the role of the disc in the healing of condylar fractures in the growing period. 40 growing and adult male Wistar rats were randomized into 4 equal groups: growing rats suffering condylar fracture with disc damage; growing rats suffering condylar fracture without disc damage; adult rats suffering condylar fracture with disc damage; adult rats suffering condylar fracture without disc damage. 3 months after the operation all animals were killed and the outcomes were compared using mandible deviation measure, body weight evaluation and histological observation. In growing rats, when the disc was undamaged maintaining its relation to the condyle head, even though the condylar fractured fragment was displaced, the condyle healed and recovered almost to normality in 3 months. In the same condyle fracture form, once the disc was damaged and lost the normal relation with the condyle head, the outcome was unfavourable. The occurrence of damage to the disc and its attachment to the condyle head are important factors in the healing of condyle fractures in the growing period.
本研究旨在评估髁突骨折愈合过程中关节盘的作用。40 只生长发育期和成年雄性 Wistar 大鼠随机分为 4 组：髁突骨折伴关节盘损伤的生长发育期大鼠；髁突骨折不伴关节盘损伤的生长发育期大鼠；髁突骨折伴关节盘损伤的成年大鼠；髁突骨折不伴关节盘损伤的成年大鼠。术后 3 个月处死所有动物，通过下颌偏斜测量、体重评估和组织学观察比较结果。在生长发育期大鼠中，当关节盘未受损并与髁突头保持关系时，即使髁突骨折碎片移位，髁突在 3 个月内也能愈合并几乎恢复正常。在相同的髁突骨折形式中，一旦关节盘受损并失去与髁突头的正常关系，结果就不理想。关节盘的损伤及其与髁突头的附着是生长发育期髁突骨折愈合的重要因素。
