UNIT-1 dental plaque 牙菌斑 S.sanguis 血链球菌 S.mitis 轻链球菌 S.mutans 变形链球菌 aerobic 好氧的，氧气的；依靠氧气的 anaerobic 没有空气而能生活得，厌氧的 1. In contrast to mucosal surface,the surface of teeth are not constantly renewed by shedding of colonized epithelial cells. 较之粘膜，牙面不能稳定地通过上皮脱落而更新。 2. Selective manner in which bacteria attach to the tooth surface is thought to reflect the fact that bacteria on their surface contain a recognition system which enables components on the bacteria surface (adhesions) to blind to complementary molecules (receptors) in the pellicle. 细菌附着与牙面的选择性方式反映了这一事实，即细菌表面具有识别系统，该系统能使细菌表面的附着器与获得性膜中的互补手提分子结合。 UNIT-2 ecology 生态学；个体生态学 ecosystem 生态系统（学） mutanism 突变的 S.sanguis 血链球菌 S.mutans 变形链球菌 1. Colonization is a complex process, as it involves not only interaction between bacteria and their environment but aslo bacterial interactions. 定植是一个复杂的过程，它不仅包括细菌和环境间的相互作用，也包括细菌之间的相互作用。 2. Tooth eruption has a major impact on the composition of oral flora.This is to be expected, as teeth provide new types of surfaces and new microenvironments. 牙齿的萌出对口腔菌群组成有重要影响。这是因为牙齿提供了一些新型的表面和新的微环境。 UNIT-3 saliva 唾液 parotid 耳旁的；腮腺的 lingual 舌的，语言的，舌侧的 buccal 颊的，颊侧的 labial 唇的，唇侧的 palatine 腭的 edentulous 无牙 sulculus 小沟 mastication 咀嚼 chew 嚼，咀嚼 temporomandibular joint (TMJ) 颞下颌关节 streptococci 链球菌 fungus (复 fungi) 真菌，霉菌 1. The salivary amylase activity of differenr individuals varies but a weak action is compensated for by the strong action of pancreatic amylase in the duodenum. 不同个体间唾液淀粉酶的活性不同，但是较弱的...
