首先， 根尖片不够敏感、清晰度差，只能显现明显的根尖吸收（apical root resorption）， 近远中面根中、根颈部的吸收不易检测，除非根吸收范围较大和深度较深时才 能显现。
基于16个网页-相关网页
ObjectiveThe characters about maxillary canines movement style, movement rate, external apical root resorption and alveolar bone height were compared when they retracted into different healing extraction sites, to select a clinical optimal time of tooth movement.
目的：通过曲面体层片、根尖定位片和牙(牙合)模型的测量和分析，比较上颌尖牙在不同愈合期拔牙区内的移动特征、移动速度，并对不同愈合期拔牙区内移动的上颌尖牙的根尖吸收、牙槽骨高度进行评估。 指导临床工作选择拔牙区内正畸牙移动的最佳时机提供参考，从而获得快速、稳定、健康的整体牙齿移动。
参考来源 - 正畸牙在拔牙创不同愈合期移动特征的临床研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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.
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.
应用推荐