查询词典 maxillary

Objective To investigate the clinical discovery and expanding of the second mesiobuccal canal (MB2) in maxillary first molars.

目的探讨在临床上上颌第一磨牙近中颊根第二根管(MB2)的发现及扩通。

This paper reports the case of a maxillary first molar that presented two root canals in the Mesiobuccal root.

本论文为在职专班研究生以案例报告，叙述上腭第一恒磨牙近中颊侧牙根，发现两个根管的案例。

A great predominance of two very close canals in the mesiobuccal root of maxillary molars has been demo...

根管治疗目前的成功率虽然已很高，但是在上腭第一恒磨牙有近中颊侧第二根管案例，假使无法找到或者充填好，那么失败的可能性就增加了。

Abstract］ Objective To improve the cure ratio of clinical root canal therapy by finding the mesiobuccal root （MB2） of the maxillary molars.

目的 通过寻找上颌磨牙近颊根管（MB2），提高临床根管治疗的治愈率。

Abstract］ Objective To improve the cure ratio of clinical root canal therapy by finding the mesiobuccal root （MB2） of the maxillary molars.

来源： 作者：张颖丽，黄洋，周春华目的通过寻找上颌磨牙近颊根管（MB2），提高临床根管治疗的治愈率。

TH5jn_2［Abstract］ Objective To improve the cure ratio of clinical root canal therapy by finding the mesiobuccal root （MB2） of the maxillary molars.

6Rzz a：Y2 目的通过寻找上颌磨牙近颊根管（MB2），提高临床根管的治愈率。

The broken instruments were mostly reamer, file and power-assisted reamer, making up 90.7%. Most of which happened in mesiobuccal canal of maxillary molar and mesial canal of mandibular molar, accounting for 70.7%.

根管预备的过程中可能将扩孔钻、根管锉、倒钩髓针、光滑髓针等根管器械折断在根管内，堵塞管腔而使治疗不能顺利进行。

MB1 root canals of the mesiobuccal root canals in maxillary molars were found obvious curve out by the rate of 82.5% in mesiodistal direction,77.5% in buccoling

上颌第一恒磨牙四个根管在近远中方向、颊舌方向均有不同程度的弯曲，其第二弯曲出现的情况也各不相同。

Maxillary second molar has five subtype, Type A: absence of root fusion, Type B: presence of mesiobuccal and distobuccal root fusion, Type C: palatal root with anyone of buccal root fusion of molar with three roots, Type D:complete root fusion of molar with three roots, Type E:pseudofusion of molar.

分析其牙根发育沟之发生率、牙根发育沟之长度、牙根发育沟至牙骨质牙本质交界的距离，以及牙根发育沟最深点的深度、占牙根长的位置、与到牙根根管的距离，并且将牙根分类为上颚第一大臼齿，仅一种分类。

Oral Surg,1971,32∶271-275［2］ Weine FS,Healy HJ,Gerstein H,et al.Canal configuration in the mesiobuccal root of the maxillary frist molar and its endodontic significance ［J］. Oral Surg Oral Med Oral Pathol,1969,28∶419-425［3］ Weller RN,Hartwell GR.

本研究通过对80例离体上颌第一磨牙行近远中方向，颊舌方向x 线投照，旨在近一步了结其根管的弯曲走向，弯曲程度，弯曲位置。X线片只能反应根管在一个平面上的走向、形态。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。