牙髓腔

In practice, this is because just before the out of teeth, root is not fully formed, the pulp cavity and apical foramen are large, thin apical cementum caused.

实际上，这是因为之前出牙，根尚未完全形成，牙髓腔和根尖孔大，薄根尖牙骨质造成的。

It was estimated pulp properties with Runkel ratio more than 1 would be harder in tension for fiber and less oriented fiber to make paper into fluffiness (Casey,1980), with flexibility coefficient less than 0.5, the paper had medium tensile strength, burst strength and folding endurance, with slenderness ratio no less than 75 that be the paper of medium tearing strength but suitable beating with per cent of wall fraction less than 40 per cent would be good paper (Rydholm, 1967) while fibers completely oriented to get higher tensile and burst strength.

牙髓腔的财产据估计超过1比率将难以在紧张、纤维少使纸纤维成蓬松型、弹性系数低于0.5，该报中等抗拉强度、爆裂强度和耐折、与细比不少于75文件中被撕裂，但适当强度击打元墙上分数占不到40%将好的文件(rydholm， 1967)而获得较高的完全纤维拉伸强度和爆裂。

Methods: The teeth of 4 cases were treated by filling the perforations with the 3M ESPE Single Bond Adhesive and the 3M ESPE F200 Compomer through the pulp cavities,the root canals were obturated well and follow-up surveys were conducted for 3 months.

对4例医源性髓腔穿孔的患牙用3M SingleBond粘接剂和3M F200光固化复合体经髓腔充填修复穿孔，进行完善的根管充填后3个月随访观察。

Root canasl therapy ; Dental pulp cavity ; Root canal obturation

根管疗法；牙髓腔；根管充填

The pulp cavity is surrounded with layers of hard tissue to protect it.

牙髓腔所包围，与层的硬组织，以保护它。

Materials and methods: Vitro model of discolored teeth: Sample of fresh erythrocytes was placed in the pulp cavity of 20 extracted teeth and centrifuged twice daily for 25 minutes over a period of 3 consecutive days.

材料与方法：在20颗因正畸拔除的健康离体牙髓腔内封入新鲜红细胞，以2500rpm／min离心25分钟，每天两次，连续离心3天制备变色牙模型。

Compared with the diameter and the density of tubular opening, the mean percentage tubular opening area reflects the feature of the pulp cavity wall more comprehensively.

牙本质小管口的相对面积较单纯的牙本质小管口的直径和密度更能全面地反映不同部位髓腔壁的特征。

Inside the gap for the pulp cavity, pulp cavity, there by the connective tissue, nerves and blood vessels formed, inflammation can cause severe pain.

内部的空隙为牙髓腔，腔中有牙髓，由结缔组织、神经和血管组成，发炎时可引起剧烈疼痛。

Roast a porcelain tooth of probably age segment at 20-60 years old of, it needs to fix an original tooth to whet very thin 1 F before making, because the Heng tooth of teenager didn't develop completely, Sui chamber generous, easily wound and tooth Sui.

烤瓷牙的大概年龄段在20-60岁之间，它在制做前需将原有的牙修磨很薄一层，因青少年恒牙未发育完全，髓腔宽大，容易伤及牙髓。

The tooth Sui chamber presents black and transparent image, the root-canal goes to the root sharp bore to present to become gradually thin image.

牙髓腔呈黑色透明影像，根管口至根尖孔呈逐渐变细的影像。

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