1)mandibular first molar下颌第一恒磨牙
1.The purpose of this study is to investigate the anatomical characteristics of the pulp chamber of permanent anterior teeth and mandibular first molars.本研究拟采用影像学方法测量恒前牙与下颌第一恒磨牙髓室的各项解剖特征，以期有利于临床。
2.Presently, there are many studies about successful treatment with lingual technique and the biomechanics of upper central incisor, and to the best of our knowledge, there are no published reports on the biomechanical of mandibular first molar.目前,有许多应用舌侧技术成功矫治的临床报道以及有关上颌中切牙舌侧矫治的生物力学研究,但有关下颌第一恒磨牙舌侧矫治的生物力学研究,国内外文献尚未见报道。
英文短句/例句
1.Characteristics of the Pulp Chamber of Permanent Anterior Teeth and Mandibular First Molars;恒前牙与下颌第一恒磨牙的髓室特征研究
2.The Biomechanical Analysis of Mandibular First Molar in Lingual Technique;下颌第一恒磨牙舌侧矫治的生物力学分析
3.The Clinical Effect on Closing Obsolete Lower Molar Spaces with Orthodontic Treatment正畸关闭下颌第一恒磨牙缺失间隙的疗效观察
4.Treatment of Vertical Impacted Mandibular First Molar with a Dentigerous Cyst含牙囊肿致下颌第一恒磨牙垂直阻生的正畸治疗
5.Clinical Researches of C-shaped Root Canals in Second Mandibular Molars;下颌第二恒磨牙C形根管的临床探讨
6.POSSIBLE FACTORS AFFECTING THE POSITION OF THE FIRST MOLAR IN THE MAXILLA上颌第一恒磨牙在颌骨中矢状位置的影响因素
7.A Study on the Root Canal Taper of Mandibular First Premolars of Chinese with Single-canal52颗中国人单根管下颌第一恒前磨牙根管锥度值测量
8.The comparative study of the automatical drift of the third molar after the extraction of the maxillary and mandibular second molar上下颌第二恒磨牙拔除后第三磨牙自行迁移情况的比较观察
9.THE RELATED-FACTORS OF MALOCCLUSION OF LOWER SECOND PERMANENT MOLARS下颌第二恒磨牙错畸形的相关因素研究
10.Anatomy Research of the Mesio-buccal Canal System of Permanent Maxillary First Molars;上颌第一恒磨牙近颊根根管系统解剖研究
11.Analysis of Rebuilding of Alveolar Bone after Closing the Space of Absence of Lower First Molar with Movement of Distal Lower Second Molar and Suspension and Erection of Horizontal Impaction Lower Third Molar前移下颌第二磨牙及竖直水平阻生的第三磨牙矫治下颌第一磨牙缺隙的牙槽骨改建的研究
12.The Diagnosis of Mandibular Premolars with Multi-canal System Using Dental Operating Microscope下颌第一前磨牙根管的临床显微观察
13.Efficiency of third root canal in the distal root of the mandibular first molar下颌第一磨牙远中三根管的临床研究
14.Morphometric Study of Mandibular First Premolar with C-shaped root in a Chinese population下颌第一前磨牙C形牙根的解剖形态研究
15.Clinical study on physiological drift of the mandibular teeth after extraction of the first mandibular premolar正畸治疗中下颌第一前磨牙拔除后下颌牙自然移动的临床研究
16.Root canal morphology of mandibular incisors and mandibular first premolars in vitro下颌切牙及下颌第一前磨牙根管形态的体外研究
17.Method: Eight male adult dogs underwent extraction of the mand ible third、 fourth premolar and first molar.方法:8只成年雄性杂种狗,拔除双侧下颌第三、前磨牙和第一磨牙。
18.The Study of root canal preparation of C-shaped canals in mandibular second molars by three techniques三种方法预备下颌第二恒磨牙C型根管的实验研究
相关短句/例句
a mandibular second molar下颌第二恒磨牙
1.Objective To investigate the displacements and the stress distributions of a mandibular second molar.目的了解下颌第二恒磨牙不同载荷下近中移动时的位移及应力分布情况。
3)maxillary first permanent molar上颌第一恒磨牙
1.Application of dental operative microscope in detecting the mesiobuccal root canal orifice of the maxillary first permanent molar;牙科显微镜在探查上颌第一恒磨牙近颊根管口的应用
2.Using five different ways to study the root canal orifices of the maxillary first permanent molar teeth;不同方法探查上颌第一恒磨牙根管口的研究
4)maxillary first molar上颌第一恒磨牙
1.Assessment of reliability of second mesiobuccal canals in extracted maxillary first molars as located by different observers;不同医师探寻离体上颌第一恒磨牙MB2根管口的可靠性评价
2.There are several apparatics which can be used to distalize the maxillary first molar.远移上颌第一恒磨牙的矫治装置很多，加力方式主要有三种：颊侧加力、舌侧加力、颊舌侧同时加力。
5)mandibular first premolar下颌第一前磨牙
1.Root canal treatment of mandibular first premolar with 3 root canals: A case report3个根管的下颌第一前磨牙的根管治疗1例
2.Objective To investigate the efficiency of different angle projection radiograph in diagnosing multiple canals of mandibular first premolars.目的探讨不同投照角度X线片在诊断下颌第一前磨牙多根管中的作用。
3.AIM:To determine the root canal initial taper of mandibular first premolars by use of digital X-ray system and stereomicroscope,which can contributed to design the shape of preparation instruments and select the instrument s taper during root canal therapy.目的:通过数字化X线牙片和体视显微镜测量根管锥度,获得下颌第一前磨牙根管的初始锥度,为根管器械材料的锥度设计和临床正确选择锥度器械提供参考。
6)mandibular first premolars下颌第一前磨牙
1.The root canals in mandibular first premolars failed to be treated;下颌第一前磨牙的临床根管漏治
延伸阅读
恒显圈与恒隐圈地球上不同纬度地区能看到的星座是不一样的。对于某一点，有些星座永远也看不到的；反过来呢，有些星座在那儿一年四季都看得见。对于一个地方来说，到底哪些星座看不到呢？这里有一个小窍门，假设一个地点的纬度是φ，那么赤纬小于-（90°-φ）的天体在这里就永远看不到。反之，凡是赤纬大于（90°-φ）的天体，在这里就总能看到。因此，在天文学上，赤纬（90°-φ）称之这一地区的“恒显圈”，而赤纬-（90°-φ）叫做该地区的“恒隐圈”。比如在北京，赤纬50°就是北京地区的“恒显圈”，位于赤纬50°以上的星星老是在天上，永远也不会落到地平线以下去。而赤纬-50°叫做北京地区的“恒隐圈”，位于赤纬-50°经南的星星北京永远也看不到。而在赤道上（纬度为0°），即使赤纬是 90°和-90°的天体也能看到，也就是说，赤道上没有“恒隐圈”，在赤道上各个位置的天体都能看得见。反之，在地球的南北极，则始终只能看到半个天空，另一半天空永远看不到，这两处拥有地球上最大的“恒隐圈”。
