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菌斑是一种稠密,不定形、非钙化的团块,此团由细菌丛及细菌间的胶状基质所构成。菌斑的数量反映了菌斑形成与消除之间的平衡状态,反映了当时口腔卫生状况的好坏,同时也反映了对牙齿的损害程度,菌斑指数高低所占的比例不同对口腔卫生的意义也不同。因此,为了解我市中小学生口腔卫生状况和各等级的严重程度,我们于1990年5月对我市城乡400名中小学生(男生各半)采用牙菌斑指数进行了口腔卫生状况调查,并对这一具有模糊性质的评价问题用模糊数学综合评价模型作一综合评价,报告如下:1 对象与方法
Plaque is a dense, amorphous, non-calcified mass composed of a bacterial matrix and a gelatinous matrix between bacteria. The number of plaques reflects the balance between the formation and elimination of plaque, reflecting the status of oral hygiene at that time, but also reflecting the degree of damage to teeth, the proportion of plaque index varies according to oral hygiene. The meaning is also different. Therefore, in order to understand the oral health status of primary and secondary school students in our city and the severity of each grade, we investigated the oral hygiene status of 400 elementary and middle school students (half boys each) in the city and countryside of our city by using dental plaque index in May 1990. A comprehensive evaluation of this evaluation problem with fuzzy nature is made using the fuzzy mathematics comprehensive evaluation model. The report is as follows: 1 Object and method