tooth n. (pl. teeth) 1.牙齿。 2.齿状突出,轮齿,锯齿,耙齿(等)。 3.嗜好。 4.〔常 pl.〕(像牙齿那样能咬人的)威力,猛力,(正面)迎击。 5.〔海口〕 〔pl.〕船上的大炮。 a canine tooth 犬齿。 a false [an artificial] tooth 假牙。 a milk tooth 乳牙。 a molar tooth 臼齿。 a wisdom tooth智齿。 I have a sweet tooth . 我喜欢吃甜东西。 the tooth of the wind 风的威力。 armed to the teeth 武装到牙齿,全副武装。 between the teeth 低声地。 cast [throw] sth. in sb.'s teeth (引用某事)遣责某人。 clench one's teeth=set one's teeth. cut a tooth 出牙齿。 cut one's wisdom teeth (eyeteeth) 开始懂事。 draw [pull] sb.'s teeth 消除某人不平[烦恼]的根由;拔除某人的爪牙(使无能为害)。 escape by [with] the skin of one's teeth 〔口语〕幸免于难。 from one's teeth=from the teeth outwards [forwards] 怀恨在心地,无诚意的。 grind one's teeth 咬牙切齿;生闷气。 have a great tooth for (fruit) 很爱吃(水果)。 in spite of sb.'s teeth 不顾某人反对。 in the teeth 反抗;公然。 in the teeth of 不管,不顾;冒着…;正面受着…。 long in the tooth 年纪大 (She is a bit long in the tooth to play the part of a young girl. 她扮演少女的角色年龄太大了一点)。 lose a handful of teeth 〔美拳击〕下巴受猛击。 put teeth in [into] a new law 给与新法律的强制性威力。 set one's teeth 咬紧牙关,拼命忍耐。 set sb.'s tooth on edge 使牙齿发酥[发涩],使腻烦[恼怒]。 show one's teeth 张牙露齿,怒视,威吓。 to sb.'s teeth 当面,大胆地。 tooth and nail 拼命(战斗、反对等)(They fought tooth and nail but lost. 他们竭尽全力拼搏,结果还是输了)。 vt. 使具齿状;给…装牙齿;刻齿,锉齿(在锯条上等);(用牙齿)咬(住)。 vi. (齿轮等)咬合。 n. -ful 〔俚语〕(白兰地酒等的)一滴,一点点,一小口。 adj. -less 没有牙齿的;无力的。
Methods : casting clasp between teeth ( ccbt ) is set up between buccal arid lingual embrasure of two abutment teeth 方法:在两基牙间的颊、龈外展隙内设置牙间卡(发夹卡) 。
The attachment is suitable for the cases with better condition of the alveolar membrane without high demand of the abutment teeth of the patient 该附著体用于基牙条件稍差,而牙槽幡黏膜条件较好的患者。
After being observed in 34 patients for 1 - 2 years , the ccbt retains perfect and the abutment teeth don ' t demonstrate removal 对34例不同牙缺失患者的使用,经1 ~ 2年观察,修复体固位良好,基牙未见松动和移位。
When designing a definitive prosthesis for these patients , factors such as the prognosis of the abutment teeth , distribution of the abutment , periodontal attachment levels , crown root ratio and the requirements of splinting must be taken into consideration 当这类患者要进入最后阶段之最终补缀治疗前,牙周疾病必须是经过牙周病专家确实控制下,并经试带一段时间之良好暂用修种体后才能开始制作。
Results : 1 ) under the same condition of loading , the stress and displacement of mesial occlusal rest design was smaller than that of distal occlusal rest design in abutment teeth and soft tissue under the base , however , the magnitude in the soft tissue under base was bigger . 2 ) when a distributed vertical load was applied to the artificial tooth abutment teeth regions , the stress distribution was similar to that of concentrated load in the artifitial tooth , and stress magnitudes were higher . 3 ) under the condition tested , the mesial occlusal rest design caused the stresses that were more in line with the long axes of the abutment teeth than did the distal occlusal rest design 结果: 1 )在同一加载条件下,近中(牙合)支托设计与远中(牙合)支托设计相比,基牙及基托下软组织的应力和位移值减小;基托下软组织的应力和位移值大于基牙; 2 )基牙及义齿整体加载时,各基牙应力分布规律与人工牙加载相同,但应力值增大; 3 )近中(牙合)支托设计使基牙受力更趋于轴向。
Methods : this experiment used finite element analysis ( fen ) in the design of mesial and distal occlusal rest of distal - extension partial removable denture and to test the magnitude of stress and displacement of abutment teeth and soft tissue under the base when under the vertical force of two conditions 方法:采用有限元法在末端游离缺损义齿的有限元模型上作远中、近中(牙合)支托设计,分别在人工牙及修复后的牙列(包括义齿及基牙)上作垂直向加载,测试基牙及基托下软组织的位移及应力值,通过测试结果作对比分析。