Cementoblast plays important roles in the progress of root resorption and repair.
成牙骨质细胞在牙根修复过程中具有重要的意义。
Objective to investigate the factors relating to root resorption after orthodontic treatment.
目的研究影响正畸治疗后牙根吸收的部分临床因素。
Deciduous root resorption is a physiological phenomenon that results in exfoliation of the deciduous teeth.
乳牙生理性根吸收是导致乳牙脱落的一种特有的生理性现象。
Conclusion Flat bite plate can cause root resorption of mandibular permanent incisors, but the root resorption is slight.
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。
The extent and location with the root resorption of neighboring incisors were observed in the sequential transaxial views;
阻生尖牙邻近切牙的根吸收组和无根吸收组尖牙的牙囊大小有无差别。
The permanent tooth germ plays an important role in physiological root resorption of deciduous tooth, but not the alone factor.
恒牙胚是引起乳牙生理性根吸收的重要因素，但却非唯一的因素。
Primary root resorption is a physiological event for the primary teeth and plays an important role during normal replacement procedure.
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。
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.
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。
Root resorption of deciduous tooth without permanent tooth germ was significantly delayed than the deciduous tooth with permanent tooth germ.
恒牙胚缺失的乳牙牙根吸收明显晚于恒牙胚存在的乳牙。
Objective to investigate the difference between digital periapical film and conventional film in the evaluation of tooth length and root resorption.
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。
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 sensitivity and specificity of diagnosing the incisors root resorption caused by impacted maxillary canines using PTG were 43.8%and 82.4%respectively.
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%；
Then analyze root resorption and its distribution changes among groups . Result: Root resorption occurred during orthodontic treatment in each group(P<0.001).
结果：三组病例正畸治疗前后牙根等级分布改变有显著性差异（P< 0 .0 0 1）。
Objective: To study if closing molar Spaces could cause severe root resorption through comparing the effects of molar and premolar extractions on root resorption.
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。
This review will introduce odontclast and its related signal cascades and the cor-relation of permanent successor with physiological root resorption of primary tooth.
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。
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。
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.
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。
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.
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。
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。
Conclusion Treatment factors should be taken into account in predicting the severity of apical root resorption, but root resorption appears great genetically - based inter - individual variation.
结论治疗因素能为矫治前预测根尖吸收的严重程度提供参考，但根尖吸收还有许多不确定的个体因素存在。
Conclusion Treatment factors should be taken into account in predicting the severity of apical root resorption, but root resorption appears great genetically - based inter - individual variation.
结论治疗因素能为矫治前预测根尖吸收的严重程度提供参考，但根尖吸收还有许多不确定的个体因素存在。
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