查询词典 mesiobuccal

AIM:To determine the efficiency of surgical o perating microscopein locating the se- cond mesiobuccal canal of perm anent upper first molar.

上颌第一恒磨牙在口腔内萌出较早，其龋病和尖周病的发病率较高，然而有资料统计其根管治疗的成功率较低。

Methods:Macrography was used to observe the morphology of the mesiobuccal root,the degree of abrasion,the morphology of the floor of pulp cavity, the number and type of apical foramen.

完善的根管治疗术是牙髓病和根尖周病治疗效果最为理想的方法，对牙体解剖知识的熟练掌握是保证根管治疗术质量的前提[1] 。

RESULTS: The rate of appearance of mesiobuccal root of maxillary first permanent molar is 38%.

结果 ：上颌第一磨牙的MB2出现率为38%；根管口的形态为圆形和卵圆形。

In this research,MB2 root canals of the mesiobuccal root canal were found out by the rate of 35%and they were found obvious curve out by the rate of 91% in mesiodistal direction,83% in buccolingual direction.

本研究中有35%的标本探通了近颊根舌侧根管，其在近远中向、颊舌向出现明显弯曲的比例达91%、83%。

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 buccolingual direction and there is no difference of curvature degree in the two directions.

结果：1上颌第一磨牙腭侧根管通畅、较直。2远中颊侧根管在近远中方向有80%，颊舌方向有45%出现大于5的明显弯曲，弯曲位置多位于根中1/3，且近远中向的弯曲明显大于颊舌向(P.05)。3上颌第一恒磨牙近中颊根颊侧根管在近远中方向、颊舌方向分别有82.5%、77.5%出现大于5的明显弯曲。

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。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。