有牙根的

Type 1-1-1,2-2-1 and 2-2-2 account for 91 4%;The appearing rats of distal lingual canal are 24 7%;The appearing rats of double root canal orifices are as follows:Medial canal 78 3%,distalcanalIt don't ...

远中舌根的发生率为 2 4 。7%；双根管口率：近中根为 78.3%，远中根(不含远中舌根，下同)为 19.3%；双根管率：近中根为 88.3%，远中根为 2 3.3%；双根尖孔率：近中根为 5 6 。7%，远中根 8.3%，单根管口而有双根尖孔者，近中为 6 。7%，远中为 3.3%。结论下颌第一恒磨牙根管的类型复杂，充分了解其根管解剖对提高根管预备效果、减少根管遗漏有重要意义。

FG has good biocompatibility and can close the primary wound with reducing the downgrowth of junctional epithelium and can significantly improve the periodontal tissue regeneration in treatment of flircation artifieial defects.

提示FG对PDLC无毒性或抑制作用，有较好的生物相容性，可促进PDLC向牙根面的迁移和附着。

Any root that contains two root canals has the potential to contain an isthmus .

任何含有两个根管的单个牙根内均有可能存在根管峡部。

Not only in the gums teeth stains teeth on the edge of the surface there, and sometimes the neck or root in the teeth also has.

牙渍不仅在牙龈边缘上的牙面上有，有时在牙颈部或牙根上也有。

They all have the typical structure of leaf of C4 plant, but out of the ordinary is that the structure of the midrib is alike the parallel veins and there is a layer of fiber cells between the phloem and the bundle-sheath of vein in the midrib and big parallel veins while the outer wall of the bulliform cells is less cuticularized.

摘 要：以7个杂交狗牙根品种的叶片进行解剖研究，结果表明，各品种均具禾本科 C4植物叶片典型结构，其独特处是：中脉结构与平行脉相似；中脉维管束、平行脉大维管束的维管束鞘内侧韧皮部外有一层纤维细胞；泡状细胞外壁很少角化。

METHODS:Fifty two permanent maxillary first molars,which were diagnosed as pulpitis and periapical periodontitis clini cally,were selected.The pulp chamber floors were examined and detected to locate the mesiolingual canals(MB2) by naked eyes and SOM respectively.

由于其近颊根通常有近中颊和近中舌(MB2 ) 2个根管，而其近中舌根管细小且根管口常较为隐蔽，因此，Weine认为上颌第一恒磨牙根管治疗失败的一个主要原因是治疗中遗漏了MB2根管。

CH was used in intracanal medicament and root canal filling in CH group and compared with camphorated paramon-chlorophenol,formacresol,iodine-potassium iodine group.

结果 CMCP、FC、IPI、CH组根管治疗期间的急症发生率差异非常明显，疼痛指数亦以CH组最低；1年后牙根吸收情况和 2年失牙率、牙再植成功率CH组与其它组有非常显著差异。

In addition, the data of meta-analysis of SCTG also showed that SCTG had better results in root coverage rate and keratinized tissue increasing than guided tissue regeneration method.

整合性分析则发现皮下结缔组织移植比起引导组织再生手术有较佳的牙根覆盖率及增加较多的角化组织。

Each consists of a crown above the gum and one or more roots below it, embedded in the jaw.

每颗牙有一个在牙龈之上的牙冠和牙龈之下的一个或多个牙根，固定于颚中。

The sharp week burning disease makes a tooth slice the clinical meaning for checking have:①Understand a bad tooth root-canal circumstance:Like root-canal number, thick thin, flection degree and have have no calcify, have have no inside absorb etc.

尖周炎症作牙片检查的临床意义有：①了解病牙根管情况：如根管数目、粗细、弯曲度以及有无钙化、有无内吸收等情况。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。