根尖部

Department of tooth crowns were removed and apical, dedicated root 6mm long, 50 teeth set up Enterococcus faecalis after root canal infection model, 20 teeth were placed in root canals cinnamaldehyde, gallnut decoction, Another 30 infected root canals placed FC, calcium hydroxide paste propylene glycol and normal saline.

标本牙去除牙冠部及根尖部，留取6mm长牙根，50颗牙建立粪肠球菌根管感染模型后，20颗牙根管内分别放置桂皮醛、五倍子水煎剂，另30颗感染根管放置FC、氢氧化钙丙二醇糊剂和生理盐水。

Methods use root tube drainage or toot tube treating after opening a window in apical labium,conservative treatment on apical cyst,use the root tube filling agent suitable filling.

采用根管引流或根尖部唇侧开窗引流后根管充填剂适当超填方法保守治疗根尖囊肿。

The results showed that the coefficient of raicel decreased firstly in a short distance, and then kept stable form radicel base to radicel apical.

通过对胚根分支系数研究表明：从根基部到根尖，呈现出先递减，然后保持稳定的趋势，采用经验分布函数表示；同时，用四种分支类型已能描述玉米胚根分支特征，且它们的特征参数在一定范围内随机分布。

Radical leaves with sheath broadened at base; petiole 30--90 cm; leaf blade triangular or triangular-ovate, 5--15(--25)× 3--15 cm, base sagittate to hastate, apex acute to acuminate.

胚根叶具鞘扩大在基部；叶柄30-90厘米；叶片三角形的或三角状卵形， 5-15(-25)* 3-15 厘米，基部箭头形到戟形，先端锐尖或渐尖。

Bone substitute of compound coral paste in periapical regions.

复方珊瑚糊剂在根尖部的骨替代情况。

The occurrence of the apical lateral foramina is 15.31%(230/1502).Conclusions The apical lateral foramina are found in 1/7 of 1 502 permanent teeth.

恒牙根尖部侧孔的孔径为根尖孔的一半，并约有1/7的恒牙出现根尖部侧孔。

Starting at the root apex, the transverse section was stained with methylene blue dye after 1-mm root was resected, and viewed with a surgical operating microscope. The number of canals as well as the presence and type of canal isthmuses were recorded.

自根尖开始，片切去除1mm牙根后，用美蓝染色根切面，在显微镜下观察并记录各横截面的根管数和峡部分布情况。

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

标本牙去除牙冠部及根尖部，留取6mm长牙根，50颗牙建立粪肠球菌根管感染模型后，20颗牙根管内分别放置桂皮醛、五倍子水煎剂，另30颗感染根管放置FC、氢氧化钙丙二醇糊剂和生理盐水。

Start at the apical end of the canal and work towards the pulp chamber.

从根尖部开始直至髓室。

Failure to seal the isthmus will lead to eventual failure. The recognition and treatment of the canal isthmus may be one factor that will reduce the failure rate of surgical endodontics.

在根尖手术中，根尖切除后使得原本与外界不通连的峡部暴露，对于峡部预备及充填的不足往往会导致手术的失败。

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