牙根吸收明显，且为锯齿状或截根状吸收。
The roots of teeth are absorbed apparently, demonstrating serrated or amputated appearance.
目的研究影响正畸治疗后牙根吸收的部分临床因素。
Objective to investigate the factors relating to root resorption after orthodontic treatment.
恒牙胚缺失的乳牙牙根吸收明显晚于恒牙胚存在的乳牙。
Root resorption of deciduous tooth without permanent tooth germ was significantly delayed than the deciduous tooth with permanent tooth germ.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
PURPOSE: The purpose of this study was to evaluate the effect of high pull J hook headgear(HPHG) on root resorption of maxillary incisors during orthodontic treatment.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
Object To evaluate the effects of class II malocclusion treated with MBT technique with high pull headgear J hook.
乳牙根吸收是一种生理现象，在乳牙的正常替换过程中具有重要意义。
Primary root resorption is a physiological event for the primary teeth and plays an important role during normal replacement procedure.
目的探讨数字化根尖片和普通根尖片在评价牙齿长度和牙根吸收方面的差异。
Objective to investigate the difference between digital periapical film and conventional film in the evaluation of tooth length and root resorption.
结论人滞留乳牙牙根吸收面存在大量的破骨细胞，是研究人破骨细胞的一个来源。
Conclusion on the resorbing surface of human deciduous teeth there are large amount of osteoclasts which can be used as a source of studying human osteoclast.
结果：两种治疗方法的牙根吸收率差异没有显著性；但是治疗疗程差异有显著性。
Results: There's no statistically significant difference between the rate of root resorption of two methods, but there's statistically significant difference between the treatment time.
结论：两种治疗方法的牙根吸收率是一致的；牙根吸收率与牙齿移动距离和受力时间没有关系。
Conclusion: the rate of root resorption of two methods are consistent, there's no relationship between the root resorption of the teeth transportation distance or treatment time.
曲面体层片对上颌阻生尖牙邻近切牙根吸收诊断的灵敏度是43.8%，特异度是82.4%；
The sensitivity and specificity of diagnosing the incisors root resorption caused by impacted maxillary canines using PTG were 43.8%and 82.4%respectively.
不能依靠曲面断层片上阻生牙牙冠与邻牙牙根的重叠范围来判断是否存在切牙的牙根吸收及吸收程度。
The overlap range of impacted canine and the root of incisors can't be used as an indicator of the extent of the incisor root resorption.
牙再植术的历史悠久，但是脱位牙根面部分牙周膜细胞活性丧失、牙根吸收，影响着牙再植术的成功率。
But the lose of the activity of periodontal ligament cells and root replantation has influenced the successful rate of tooth replantation for a long time.
下面就破牙细胞及其相关信号通路、继承恒牙胚对乳牙根吸收的影响和继承恒牙胚缺失下的乳牙根吸收作一综述。
This review will introduce odontclast and its related signal cascades and the cor-relation of permanent successor with physiological root resorption of primary tooth.
前言：目的：通过对磨牙拔除病例与前磨牙拔除病例的牙根吸收情况的对比，探讨关闭磨牙间隙是否加重牙根吸收。
Objective: To study if closing molar Spaces could cause severe root resorption through comparing the effects of molar and premolar extractions on root resorption.
摘要牙根吸收作为正畸治疗中一个常见的并发症越来越受到医生的关注。早期诊断根吸收具有十分积极的意义。
Abstract : Root resorption is a large side effect which occurrs in the course of orthodontic treatment, and early diagnosis of root resorption is important for the prognosis.
结果：16例上颌埋伏阻生前牙均顺利萌出至正常位置，牙髓活力测试正常。未见龈退缩、邻牙牙根吸收和支抗丧失等常见并发症。
Results: All impacted anterior maxillary teeth of the 16 cases were successfully moved into alignment with pulpal vitality , and no postoperative complications were found.
结果RANK的阳性信号出现在乳牙根吸收面的破牙细胞和接近牙胚的牙槽骨陷窝中的破骨细胞、恒牙胚的成牙本质细胞和前期牙本质中。
Result RANK positive signals were observed on the odontoclasts in the absorbed lacunae of deciduous teeth roots and osteoclasts in the alveolar bone near.
结论根管治疗是脱位牙治疗的重要手段，早期根管治疗可预防或减少脱位牙牙根的吸收。
Conclusion root canal therapy is an important method to treat the dislocated teeth, and early root canal therapy can prevent or reduce root absorption of the dislocated 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.
结果：无牙根保留的牙槽骨吸收较有牙根保留的牙槽骨吸收明显。
Results: bone resorption was more obvious in alveolar bone with residual roots than that without roots.
结论平面导板会造成下前牙牙根的吸收，但根吸收程度轻微。
Conclusion Flat bite plate can cause root resorption of mandibular permanent incisors, but the root resorption is slight.
乳恒牙替换是动物牙齿及颌面部生长发育的重要阶段，包含有乳牙根、牙槽骨的吸收、恒牙胚的发育和恒牙萌出等一系列复杂的生理过程。
The replacement of primary and permanent teeth is an important part that belongs to the growth and development of animals' teeth and maxillofacial region.
同时在第1、2、4、7周将动物处死，制作实验牙的病理切片，观察发生牙根 吸收的情况。
The animals were killed at 1,2,4 and 7 week respectively, and histological slices of the experimental teeth were made to observe the root resorption.
同时在第1、2、4、7周将动物处死，制作实验牙的病理切片，观察发生牙根 吸收的情况。
The animals were killed at 1,2,4 and 7 week respectively, and histological slices of the experimental teeth were made to observe the root resorption.
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