尖牙

AIM:Difficulty in treatment of root canal has been increased significantly due to the complex of root canal and popularity of root canal therapy.

根管治疗术是牙髓坏死、根尖周病的最有效的治疗方法[1]。

Can, under the guidance of the teacher, the correct file to use root canal + protaper, prepared root canal, the sharp taper gutta-percha filling + fiber post + crown restoration or filling operation, the independent number of cases completed root canal therapy and filling.

能够在老师的指导下，正确运用根管锉＋protaper，预备根管，大锥度牙胶尖充填＋纤维桩＋冠修复或充填术，独立完成若干例根管治疗及充填术。

In immature permanent teeth, devitalization and root canal treatment are not advisable until full apex formation and closure have occurred.

在未成熟恒牙，根尖形成和闭合之前，不宜行失活及根管治疗术，而应行去髓术并氢氧化钙安抚。

Her height and head girth were excessive. Some degree of psychomotor retardation was present. Physical features included macrocrania, dolichocephaly, frontal bossing, hypertelorism, high-arched palate, large hands and feet. Cerebral ventricles were mildly dilated on brain computerized tomography. The diagnosis lied mainly on clinical characteristics.

最常见的颅面畸形包括额头隆突，高弓腭，两眼过距，长头症，尖下巴和过早发牙，其他较通常的发现还有发展障碍，大手大脚，高骨龄，细微运动调节之缺乏及新生儿适应或餵食困难，本症之诊断主要靠临床诊断，但由於过去在台湾鲜为人所提及，故易与水脑症混淆。

Clinical analysis of 75 cases fractured endodontic instruments in root canal treatment.

根管治疗是治疗各种不可复性牙髓炎及根尖周炎的最可靠的有效方法。

In the teeth that were filled with gutta percha and without any coronal closure, bacterial growth at the apex was observed after only 48 hours.

在牙胶充填没有冠方封闭的牙齿组，细菌在仅48小时后就到达根尖。

The data of these methods were compared with those of same root canal length measured by the x ray film with gutta percha in root canal.

完善的根管治疗是临床上治疗牙髓病、根尖周病以及残冠、残根保存治疗的重要步骤。

In the teeth that were filled with guttapercha and without any coronal closure, bacterialgrowth at the apex was observed after only 48 hours.

在牙胶充填没有冠方封闭的牙齿组，细菌在仅48小时后就到达根尖。

Crowndown technique was applied in root canal preparation for all cases. The accuracy of the two methods was evaluated and compared with No 30 film of guttapercha point.

两组均采用冠向下技术进行根管预备，插30#牙胶尖拍片评价2种方法测量根管工作长度的准确性并进行比较。

But not on the front teeth, but next to the small incisor teeth, the tip has been exposed.

但不是上门牙，而是门牙旁边的小牙，已经露尖了。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失