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作者在5年期间对198个可以利用的人尸体的颞下颌关节盘作解剖学的观察研究,发现关节盘变性尤其是双侧性的有明显的发生率,并依照关节变性的有无和程度分为变性大,变性小和正常的三类和按年龄每10年一级的关节盘的“标准”的尝试。发现40岁级的关节盘无变性,但由此后即出现变化,在50岁级表现出曲线最高,在50、60、70岁级中的改变最大。关于牙列完整性对于关节的改变的影响未获证实,然而有完整的或部份的牙列可减少关节的问题是有理由的,
During the 5-year period, the author made an anatomical observation of the TMJ discs of 198 available human cadavers and found that there was a significant incidence of degeneration of the joint disc, especially bilateral. According to the presence and degree of degeneration of the joint Into a large degeneration, degeneration and normal small three categories and by age of 10 years of joint disc “standard” attempt. The 40-year-old disc was found to be degeneration-free, but changed from then on, showing the highest curve in the 50s and the largest changes in the 50s, 60s and 70s. The effect of dentition integrity on joint changes has not been demonstrated, however, it is justified to have a complete or partial dentition to reduce joint problems,