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- Most of which happened in mesiobuccal canal of maxillary molar and mesial canal of mandibular molar, accounting for 70.7%. 器械折断于上磨牙近颊根管和下磨牙近中根管者居多,占70.;7%25。
- Deciduous caries were often examined on the 1st mandibular molar, the let maxillary incisor, and the 2nd mandibular molar. 在牙位上,患龋好发牙位前三位为下颌第一乳磨牙、上颌第一乳前牙、下颌第二乳磨牙。
- Clinical application of intermaxillary traction and fixed flat bite-plate could correct lingual inclination of mandibular molar effectively. 交互牵引结合固定平面导板是矫治下颌第一磨牙舌倾的有效方法。
- In 1927, at Chou-k'ou-tien, near Peking, a hominid lower molar of unusual pattern was discovered. 1927年,在北京附近的周口店发现一颗形状异常的人类下臼齿。
- Conclusion The effects of mandibular molar distalization produced by face-bow and lip bumper was positive ,without loss of anchorage. 结论 口外弓联合唇挡推下磨牙远移无口内支抗消耗,效果可靠。
- In 1927, at Chou-k'ou-tien, near Beijing, a hominid lower molar of unusual pattern was discovered. 1927年,在北京附近的周口店发现一颗形状异常的人类下臼齿。
- A tooth adapted for tearing apart flesh, especially one of the last upper premolar or first lower molar teeth in carnivorous mammals. 裂齿,食肉齿适合于撕裂肉的牙齿,尤指食肉哺乳动物最后上前臼齿之一或第一个下臼齿
- RESULTS: Using the simple semi-fixed lingual arch can correct the malposition of mandibular molar s linguoclination or buccolination quickly and successfully. 结果:在矫治初期,应用简易半固定舌弓能快速成功地矫治下颌磨牙颊向或舌向倾斜错位。
- RESULTS: Using the simple semi-fixed lingual arch can correct the malposition of mandibular molar's linguoclination or buccolination quickly and successfully. 结果:在矫治初期,应用简易半固定舌弓能快速成功地矫治下领磨牙颊向或舌向倾斜错位。
- For upper &lower molars, round type beak. 大的下颌磨牙,宽喙,更大弹性。
- A tooth adapted for tearing apart flesh,especially one of the last upper premolar or first lower molar teeth in carnivorous mammals. 裂齿,食肉齿适合于撕裂肉的牙齿,尤指食肉哺乳动物最后上前臼齿之一或第一个下臼齿
- Results High fluoride exposure in pregnant mic e could cause subameloblastic cysts in first lower molar of fetal mice.Programm ed cell death (PCD) ... 结果孕鼠高氟引起胎鼠牙胚分泌期造釉细胞下囊腔的形成,囊腔上方的造釉细胞发生了程序性细胞凋亡(PCD)。
- It was shown that the particles with small diameter and narrow distribution could be obtained at a low molar ratio of of KBH_(4) to CuS... 实验表明,硼氢化钾与硫酸铜的摩尔比较小更利于制备粒径小、粒径分布窄、团聚程度低的铜纳米颗粒。
- Results:The frequencies of lateral canals were 39.4% and 36.7% in the mesiobuccal root (MBR) of maxillary molar's and in the mesial root(MR)of mandibular molar's separate roots,respectively. 结果:(1)分离根的上颌磨牙近中颊根侧支根管的平均出现率为39.;4%25;下颌磨牙近中根侧支根管平均出现率36
- Results:The frequencies of lateral canals were 39.4% and 36.7% in the mesiobuccal root (MBR) of maxillary molar s and in the mesial root(MR)of mandibular molar s separate roots,respectively. 4%25,下颌磨牙近中根侧支根管平均出现率36。7%25,磨牙的近中颊根及近中根均出现较多的侧支根管及管间侧支。(2)约2/3的根尖孔位置不在根尖。
- RE is partly or completely attached to the distal root of mandibular molars. 远舌根通常细短弯曲,它的出现增大了下颌第一磨牙根管治疗的难度。
- The results showthat fly ash will reacte with Ca(OH) 2 and high Ca/Si ratio C-S-H gel produced by the hydration of clinker,and so that to produce the C-S-H gel with a lower molar ratio of CaO/SiO. And such C-S-H gel can bind more Na + and K + ions. 结果显示 ,粉煤灰的掺入对ASR有较好的抑制效果。 粉煤灰主要是通过与Ca(OH)2 及水泥熟料水化生成的高Ca/Si比的C -S-H凝胶发生二次火山灰反应 ,生成大量低Ca/Si比的C -S-H凝胶 ,提高了对孔溶液中Na+ 和K+ 的吸收 ,从而起到抑制ASR的作用
- The critical micelle concentrations and aggregation numbers of sodium dodecyl sulfates(SDS) mixed with different low molar ratio of cetyltrimethylammonium bromide(CTAB) were tested by pyrene fluorescence probe method. 用芘(Py)荧光探针法测定了添加少量十六烷基三甲基溴化胺(CTAB)后,十二烷基硫酸钠(SDS)的临界胶束浓度(CMC)和胶束聚集数(Nm)。
- Radix entomolaris(RE) is a supernumerary distolingual root of mandibular molars, mainly in mandibu-lar first molars. 远舌根是位于下颌恒磨牙远中舌侧的一个部分或完全独立的额外牙根,常见于下颌第一磨牙。
- In addition, the changes of width between second bicuspid and mandibular molars showed statistical significances. 下牙弓变化中,第二双尖牙间和磨牙间宽度增加有显著性差异。