在固定剂中同时加入氨氧化镧，镧即随固定剂进入植物根尖组织。
Added lanthanum hydroxide in fixation fluid, lanthanum would enter plant root with fixative.
目的：探讨高频电流对牙髓失活作用的可靠性、对根尖周围组织的安全性及临床疗效。
Object: To approach the reliability of high-frequency current acting upon the devitalization of dental pulp, the safety and clinical effect for peripheral tissues of root tip.
结果显示：MPU-03材料对根尖周组织的刺激性明显轻于常规的糊剂牙胶尖充填材料（P＜0．01）。
The result indicated that the irritation of the MPU 03 material on periapical tissue was less than the root canal sealer and Guttapercha( P< 0.01).
根管封闭剂与核心充填材料、牙本质结合，封闭口腔和根尖周通道，促进尖周组织愈合。
Root canal sealer combined with the core materials and dentin could seal the access between the oral cavity and periapical tissue, promoting the healing.
目的研究牙科用三维小视野照射CT (3dx)在口腔内科根尖部硬组织疾病诊断和牙齿解剖学形态影像中的价值。
Objective to investigate the application of the limited cone beam ct (3dx) for the diagnosis of the hard tissue disease of apex and the anatomical morphology of the teeth.
乳牙根充糊剂除需具有恒牙根充糊剂的特性外，还需具有充填后能与乳牙牙根同步吸收、对乳牙根尖周组织和恒牙牙胚无害等性质。
Root canal filling pastes for primary tooth have to meet more needs than paste for permanent tooth, such as being absorbed with root simultaneously and doing no harm to permanent tooth germ.
组织学观察：正常鼠根尖周牙周膜组织结构完整，根尖周牙槽骨正常无吸收。
Histology observation: All of the periapical tissues for control group were free of inflammation and bone destruction.
本文就MTA的理化生物性能、组织学研究及其在根尖诱导成形术中的应用作一探讨。
This review will have a research on MTA, including its physical and chemical properties, biological performance, histological study, and application in apexification.
愈伤组织的诱导与再分化的研究显示：“种都一号”儿菜下胚轴与子叶愈伤组织诱导较容易，但根尖很难愈伤化。
It is easy to induce callus derived from hypocotyls and cotyledons, but callus derived from root tip was rather difficult to be done.
结论：纳米氧化锌糊剂、羟磷灰石糊剂和纳米羟磷灰石糊剂具有良好的组织相容性和根尖封闭性，可以作为根管封闭剂用于根管充填。
Conclusion: Nano-zinc-oxide, hydroxyapatite and nanohydroxyapatite have favorable histocompatibility and excellent apical sealing ability, so they are suitable for root filling as root canal sealers.
结论：磷酸钙水门汀与软硬组织有良好的相容性，具有促进根尖孔闭合的生物学作用。
Conclusion: Calcium phosphate cement has excellent compatibility with soft and hard tissues, it has the potential of being a root canal filling material available for promoting apical closure.
根尖的初生分生组织可扩大到伸长区下方一段距离。
The primary meristem of the root tip may be extended a section of distance below the elongation region.
方法建立大鼠根尖周炎动物模型，于术后1、2、3、4周取下颌骨组织，摄X线牙片、制作石蜡切片；
The SD rats were killed at 1, 2, 3, 4 weeks and mandibular molar teeth X-ray were taken.
现对其组织学基础的研究作一综述，以期为根尖诱导形成术的研究指明方向。
This article will review the studies about the histological basis. We expect to designate the direction to the further studies on apexification.
结果自固化磷酸钙根尖诱导成形术成功率达85%，根尖形成和根端硬组织封闭完整。
Results 85% of the treated teeth got the good clinical effects of root development and apical closure.
根尖周组织中以慢性炎细胞浸润为主，未见有微生物。
Infiltration of chronic inflammation cell was discovered in periapical tissues with no microorganism observed.
根的生长主要取决于根尖区的细胞分裂和伸长，而调控根尖分生组织细胞分裂的成分很大程度上是未知的。
Root growth is mainly determined by cell division and subsequent elongation in the root apical area. Components regulating cell division in root meristematic cells are largely unknown.
GUS染色显示NPC2在根中主要是在根尖分生区和伸长区表达，在成熟区主要是在维管组织中表达；
The results of GUS staining showed that NPC2 expressed mainly in meristematic zone, elongation zone and vascular tissue of maturation zone of root tip;
适宜诱导大蒜胚性愈伤组织且生长正常的外植体为茎尖和根尖。
Results indicated:1) Induction of somatically embryogenic callus was best when shoot and root tips were used as explants.
形态结构类叶升麻根尖由根冠和顶端分生组织构成；
Anatomical Structures of ActaeaRoot: root tip is consisted of initial cells of calyptrogen, periblem and plerome;
形态结构类叶升麻根尖由根冠和顶端分生组织构成；
Anatomical Structures of ActaeaRoot: root tip is consisted of initial cells of calyptrogen, periblem and plerome;
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