However, the regulatory mechanism of crown root development is poorly understood.
然而冠状根发育的调节机制却知之甚少。
Exogenous auxin application can partially rescue the defect of crown root development in Oscand1.
施加外源生长素能够部分回复突变体的冠状根形成的缺陷。
Our findings provide new information about the molecular regulation of the emergence of crown root in rice.
本研究为水稻冠状根伸长的分子调控机理提供了新的理解。
During embryogenesis and crown root formation, QHB expression was observed prior to the morphological differentiation of the root.
在胚发育和冠状根形成过程中，QHB在根的形态分化之前就已经表达。
In rice (Oryza sativa), the shoot-borne crown roots are the major root type and are initiated at lower stem nodes as part of normal plant development.
水稻地上部形成的冠状根主要是在低位茎节上长出的根，是植物正常发育一部分。
The results suggest that WOX11 may be an integrator of auxin and cytokinin signaling that feeds into RR2 to regulate cell proliferation during crown root development.
这些结果表明WOX11可能是整合生长素和细胞分裂素信号传导的因子，与RR 2一起在冠状根发育中调节细胞的增殖。
The tooth also had all the components of normal teeth, including enamel, crown and root, and connective fibers to fix it to bone.
培育的牙齿还具备正常牙齿的所有组成成分，包括釉质、齿冠和牙根，以及使其固定于骨头的结缔组织纤维。
I guess it's for this reason that I love the Crown Pop-up sink stopper idea; the exposed top end stays clean while the root-ish tail end catches the hair and goop.
我想这也许是我为什么这么喜欢这款下水漏的原因吧。你看，暴露在外的上表面一直很干净而下面的像根一样的尾巴就会把头发截留下来了。
Methods analysis the clinic effect of procelain post core on36patients with residual root or residual crown.
方法分析36例全瓷桩核修复前牙残冠、残根的临床效果。
Ratio of height and diameter, crown and root, of root cutting seedling were strong with more fibrous root, and higher rate of fungus root infection than untreated normal field seedlings.
切根苗的高径比与冠根比均在壮苗的适宜范围内，须根数量多，菌根感染率高，均明显优于未切根的普通大田亩，这将有效地提高造林质量。
Conclusion it is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.
结论短期内冠根向预备技术比逐步后退技术成形的根管更有利于根管充填后根尖孔的密封。
Conclusion: Tooth extrusion method with new method is an effective method for anterior teeth with crown-root fracture.
结论：使用改进的固定矫正器进行牙根牙合向牵引治疗前牙冠根折的方法有效可行。
Objective To evaluate the clinical effect of bonding and surgical therapy on fractured crown-root complicated with periodontal abscess.
目的应用黏接再植术及牙周翻瓣植骨术对后牙冠根纵折伴牙周脓肿手术治疗的疗效进行评价。
Objective: to explore the prosthetic design and procedure of residual crown with complete root canal imperforation so as to solve the clinical problem of such cases.
目的：探讨根管完全闭锁钙化残冠、残根的临床修复设计与方法，为修复临床对这类病例提供解决方案。
Objective To investigate the clinical effect of one-time root canal therapy and reattachment of permanent incisors with crown fracture.
目的：观察恒切牙外伤冠折后行一次性根管治疗与断冠再接术的临床效果。
Objective: To evaluate the clinical of using prefabricated cylindrical root canal pin to lengthen the clinical crown and restoring anterior tooth and premolar defect with PFM.
目的：评价应用预成圆柱形根管钉对前牙牙体缺损患者冠再接后烤瓷修复体的临床效果。
Objective To note that the traditional pile of metal casting is still the important methods for root and crown restoration.
目的说明传统的铸造金属桩核仍是修复残根残冠的重要方法。
Objective to analyze the effect of preserving severely damaged teeth such as stubbed tooth root, crown and vertically fractured tooth through compositive therapy.
目的利用综合治疗，对残根、残冠、纵折牙等严重缺损牙进行保存治疗并分析其疗效。
Results: 207 cases were crown fractures, while 23 cases were root fractures.
结果：本组病例各种类型冠折207例，根折23例。
Objective to investigate the effects of surgical crown lengthening on conservative restoration in anterior residual root.
目的探讨牙冠延长术对前牙残根的保存修复效果的影响。
Result: the three-dimensional models of the first maxillary molar residual root restored with post-core crown were generated.
结果：建立了上颌第一磨牙残根桩核冠的三维有限元模型。
Objective:To treatment the young permanent incisors with exposed pulps in crown by pulpotomy and observe the growth of root canals and apexogenesis following up over 2 years.
目的：对外伤引起的年轻恒前牙冠折露髓行活髓切断术，并于2年以上追踪观察其根管、根尖孔发育情况。
Conclusion By adopting the root canal therapy together with the technologies of inner bleaching and seal dentinal tubule we can prevent and cure crown surface discoloration effectively.
结论在根管治疗的同时结合内漂白技术和牙本质小管封闭技术能有效地防治牙冠表面变色。
Its unable to repair dowel crown because of its shorter root of tooth.
残根太短，一般无法利用桩冠修复。
Objective: Statistical analysis of mandibular molar mesiodistal crown width and tooth length and development of root.
目的：统计分析下颌第一、第二、第三磨牙牙冠近远中宽度、牙体长度、分根情况以及相关因素。
Objective: To discuss the prosthetic methods of molars residual root and crown with nonmetallic material.
目的：探讨磨牙残根残冠的非金属修复方法。
Objective: to observe the effect of cast post_core porcelain fused to metal crown on the restoration of residual root and crown of anterior.
目的：观察铸造桩核烤瓷冠在前牙残根残冠修复中的应用效果。
Objective To observe the near term curative effect of making post crown with core after resinifying therapy on the distomolar residual root of the aged.
目的观察老年人后牙残根残冠塑化治疗后进行核冠修复的临床疗效。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
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