结论根管治疗后用光固化树脂充填前磨牙的各类洞，牙体的抗折强度优于用银汞充填者。
Conclusion the fracture strength of premolar teeth filled with light curing composite resin was higher than filled with amalgam after root canal therapy.
方法选择隐裂、根折或根分叉病变患者，对欲保留牙根进行根管治疗后，行半牙切除术。
Methods Hemisections were performed on reserved canals of incomplete tooth fracture, complete root fracture and furcation involvement after root canal therapy.
目的：观察恒切牙外伤冠折后行一次性根管治疗与断冠再接术的临床效果。
Objective To investigate the clinical effect of one-time root canal therapy and reattachment of permanent incisors with crown fracture.
简要介绍了螺旋折流板换热器的折流板及定距管尺寸的CAD计算方法。
The method of CAD calculation for the sizes of baffle and spacer in helical baffle heat exchanger was briefly introduced.
目的：对外伤引起的年轻恒前牙冠折露髓行活髓切断术，并于2年以上追踪观察其根管、根尖孔发育情况。
Objective:To treatment the young permanent incisors with exposed pulps in crown by pulpotomy and observe the growth of root canals and apexogenesis following up over 2 years.
目的比较预备与不预备的根管以及预备后充填与不充填的根管抗折力。
Objective To compare the resistance to fracture of the root canals after instrumentation or not.
该厂在小合成氨合成工段的技改中，采用1000单管折流式新型内件。
In revamping of the Ammonia Synthesis Section, newly developed 1000 tube-baffle internal component was applied.
结果表明，螺旋折流板换热器管间流体斜向冲刷管束。
The experimental results show that the fluid flow in tube bundles is angled to the tubes.
目的：观察根管治疗后的下颌磨牙冠缺损类型与冠根折的关系。
Objective: To evaluate the relationship between crown defect types and crown fractures of root-canal-treated mandibular molars.
方法选择合适病例，采用钢丝结扎，根管治疗和牙周治疗、全冠修复等多种方法，对磨牙纵折予以保守治疗。
Methods the proper cases were selected to be ligated with wire, pulp extirpation, peridental therapy and crown repair in conservative treatment.
用于石化、锅炉、制冷等行业的管板，折流板和法兰盘钻。也可用于建筑、桥梁、铁塔等钢结构中的联接板钻孔。
Ideal drilling machine for tube-plates, baffle plates and flange, in petrochemical, boiler and air-condition industries, also for joint plates in building, bridge, iron tower, etc.
摘要【摘要】目的探讨几种根管预备方法和充填技术组合对根尖微渗漏和牙根抗折强度的影响。
Abstract: Objective: to explore the influence on micro leakage from root tip and tooth root's bending strength by different combinations of root canal preparation and filling technology.
在多孔内管的内部套接着具有折流机构的芯管。
A core tube with a baffling mechanism is sleeved in the inner of the porous inner tube.
本文研究还首次发现在层流区，随着雷诺数的增加，肋叉排三维内肋管和光管的换热特性曲线会出现一个交点即换热有效折点。
In this paper, increase with Reynolds number, we first find that 3-d IFT with staggered arrangement fins and smooth tube's heat transfer characteristic curve will have a point of intersection.
方法选择92例患者的105颗磨牙折裂，完成牙体根管治疗，桩核制作并进行金属全冠或烤瓷全冠修复。
Methods 105 fracture molar teeth in 92 patients, treated pulp normally fulled and fixed it and then repair the whole coronary.
方法选择92例患者的105颗磨牙折裂，完成牙体根管治疗，桩核制作并进行金属全冠或烤瓷全冠修复。
Methods 105 fracture molar teeth in 92 patients, treated pulp normally fulled and fixed it and then repair the whole coronary.
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