单选题
发布日期:2020-08-20
可用杯状金刚砂片进行
可用金刚砂车针切割
可用球钻或裂钻去除龋坏组织
颈部沿龈缘线制备
颊、舌侧不要扩展过多,以免破坏邻接关系
根管治疗(root canal therapy)是牙髓病和根尖周病的国际上最常用的有效治疗方法。根管治疗术的原理是通过机械和化学方法去除根管内的大部分感染物,并通过充填根管、封闭冠部,防止发生根尖周病变或促进已经发生的根尖周病变的愈合。
邻面龋指龋坏的位置在两颗牙齿相邻部位。
松动,读音是sōng dòng,汉语词语,意思是不坚持,松口,变得有灵活余地。
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Practice 2 Now many countries find themselves still struggling with problems that are as old as man himself. Basic social problems such as poor or nonexistent health care, and nutrient-deficient diets continue to annoy developing countries, contributing to low life expectancy rates and hampering economic development. While it may be true that some countries have found answers to these basic problems of humanity, this does not mean that their societies are problem-free. Indeed, in the solving of age-old problems more economically, advanced societies have found themselves facing new social problems, problems that are a direct outgrowth of their economic advancement. One such problem is that of aging.
打破城乡二元结构要从()几方面入手。
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据《素问·举痛论》,热气留于小肠,可出现()
修剪片体时,下列哪种对象不能用来作为修剪边界()
下列标志中,可以作为商标申请注册的是()。
竣工决算文件中,主要反映竣工工程建设成果和经验,全面考核分析工程投资与造价的书面总结文件是( )。
法律对科技的作用有哪些?
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企业客户开通网银,需持()到账户开户网点办理。
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