牙

BACKGROUND: Hydroxyapatite has favorable biocompatibility, can protect pulp tissue and promote the formation of osteoid dentin and the concrescence of pulp tissue.

背景：羟基磷灰石具有良好的生物相容性，可保护牙髓组织，促进骨样牙本质的形成和牙髓组织的愈合，但无抗感染能力。

Objective: To study the treatment methods of malocclusion patients with congenitally missing teeth, and to explore the position, type and treatment methods of congenitally missing teeth.

目的：探讨伴有先天缺牙的错牙合畸形患者先天缺牙的部位、类型和矫治方法。

The collection for conodont samples of the Ordovician was carried out in the platform facies region of the Tarim Basin. Sixteen outcrop sections were sampled systematically and 29 well drillings were collected at the important intervals. More than 600 samples were acidized, and thousands specimens were obtained.

对塔里木盆地台地相区奥陶系16条露头剖面进行了系统的牙形石样品采集，对29口钻井岩心的重点层段进行了牙形石样品采集，分析了采得的共600余块样品，在奥陶系各个层段都得到数量可观的牙形石。

Its age has been much debated. The conodont study clearly shows that the lower and middle part of the Xibiehe section should be assigned to the Late Silurian Xibiehe Formation based on the finding of Ozarkodina uncrispa which can correlate with the lower part of Ozarkodina crispa Zone.

西别河剖面的牙形刺研究表明：西别河剖面的下、中部应归入上志留亚系，发现了可与Ludlow统标准牙形刺带Ozarkodina crispa对比的牙形刺Ozarkodina uncrispa。

The length, width, axial gradient for the crowns,the heigh of gingival line,the width of anterior dentition and the ratio of crista marginalis of their teeth were measured and analysed in their photographs and dental casts after orthodontic treatment.

测量关于正畸治疗后上颌第一前磨牙和对侧尖牙的龈缘线高度和牙齿形态的6项指标：龈缘线高度、临床冠长度、宽度、单侧前牙列宽度、轴倾度和近远中边缘嵴比，进行两均数配对t检验，观察分析两组的差异。

The clinical practice of post and crown technique in big den

桩核加烤瓷冠技术在牙体大面积缺损修复中的临床应用是成熟成功的，挽救了许多以前要拔除的牙体大面积缺损的患牙，临床应用很有价值。

clinical practice of post and crown technique in big dentin defect is mature and succ

桩核加烤瓷冠技术在牙体大面积缺损修复中的临床应用是成熟成功的，挽救了许多以前要拔除的牙体大面积缺损的患牙，临床应用很有价值。

The clinical practice of post and crown technique in big dentin defect is mature and successful, save many big dentin defects which are extracted before, it is valuable in clinic.

桩核加烤瓷冠技术在牙体大面积缺损修复中的临床应用是成熟成功的，挽救了许多以前要拔除的牙体大面积缺损的患牙，临床应用很有价值。

the clinical practice of post and crown technique in big dentin defect is mature and successful, has saved many big dentin defects which are extracted before, it is valuable in clinic.

桩核加烤瓷冠技术在牙体大面积缺损修复中的临床应用是成熟成功的，挽救了许多以前要拔除的牙体大面积缺损的患牙，临床应用很有价值。

clinical practice of post and crown technique in big dentin defect is mature and successful, save many big dentin defects are extracted before, it is valuable in clinic.

桩核加烤瓷冠技术在牙体大面积缺损修复中的临床应用是成熟成功的，挽救了许多以前要拔除的牙体大面积缺损的患牙，临床应用很有价值。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。