由于新的防治学概念的产生,同时加上牙齿疾病类型的改变,需要一种方法能够回答龋齿研究中一些专门问题,例如:病损的严重程度,损害范围,以及对专门治疗的需求。 40余年来,DMF指数在龋病流行病学的研究中使用最广泛。它用来估价疾病在全世界的流行及分布情况,同时已经证实DMF与治疗需求间有相互关系。 DMF并不能代表有关人力和财经方面的牙科需要,并且这一指数既没有考虑龋坏的程度,也没有考虑其可能的潜在并发症。因此,我们需要一个更适当的衡 Due to the new concept of prevention and treatment, combined with changes in the type of dental disease, there is a need for a way to answer specific questions in dental caries research such as the severity of the lesion, the extent of the lesion, and the need for specialized treatment. For more than 40 years, the DMF index has been used most widely in the study of dental caries epidemiology. It is used to estimate the prevalence and distribution of the disease throughout the world, and it has also been demonstrated that there is a correlation between DMF and treatment needs. DMF does not represent the dental needs on human and financial aspects and does not consider the extent of caries nor does it consider its potential complications. Therefore, we need a more appropriate balance