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近年来,龋源性患牙采用牙髓治疗而保存,拔除的牙越来越少,这与牙髓病学理论研究的深入,治疗手段的增加和患者生活水平的提高有关。以英格兰和威尔士为例,1978年经根管治疗术的牙为80万个,1988年上升为140万个。后牙和老年人根管治疗术的比例也在上升。而后牙和老年人的根管治疗术费时、难度大,遗憾的是医疗质量却在下降。更严重的是:一些国立牙科医院的医疗质量竟不如开业医生的医疗质量,一些必要的安全设备不全或不用。造成这些问题的原因很多,其主要原因是教学质量的下降。
In recent years, caries-based dental pulp with dental preservation and removal of fewer and fewer teeth, which is in-depth theoretical research of endodontics, the increase in treatment and patients with improved living standards. In England and Wales, for example, there were 800,000 teeth underwent root canal therapy in 1978 and 1.4 million in 1988. The proportion of endodontic treatment of posterior teeth and the elderly is also on the rise. The root canal treatment of tooth and the elderly after the time-consuming, difficult, but unfortunately the quality of care is declining. What is more serious is that the quality of medical care in some national dental hospitals is not as good as that of medical practitioners, and some necessary safety equipment is not available or needed. There are many reasons for these problems, the main reason is the decline of teaching quality.