Objective:To investigate the eruption of cystic lesion associated impacted permanent teeth(CAIPT)of the jaws after fe-nestrating decompression in adolescents and to analyze the related factors that affect the eruption of CAIPT.Methods:32 cases of CAIPT were examined restrospectively by panoramic radiographs.The subjects were divided into erupted group(n =22),and nonerupt-ed group(n =10).Patient age,angulation of the CAIPT,the cusp depth,eruption space and the level of dental root formation meas-ured on intial panoramic radiograph,were subjected to statistical analysis.Results:The eruption of the impacted mandibular molar was significantly related to the cusp depth,level of dental root formation and the patient's age(P <0.05).The eruption of the impacted man-dibular premolar was significantly related to the cusp depth,level of dental root formation,the angulation of the tooth and the patient's age (P <0.05),but not to dental space for the eruption(P >0.05).Conclusion:The patient's age,angulation of impacted permanent teeth,cusp depth,eruption space,level of dental root formation should be considered in the management of CAIPT.%目的：观察青少年颌骨囊性病变开窗减压术后，与囊性病变有关的阻生恒牙（CAIPT）萌出情况，分析影响 CAIPT萌出的相关因素。方法：术后患者随访拍摄全颌曲面断层片观察32颗 CAIPT 的萌出情况。分为萌出（22例）和未萌出（10例）2组。观察及测量 CAIPT 相关参数（牙尖深度、牙齿的角度、萌出间隙、牙根的形成水平），对32例患者的年龄及其 CAIPT的相关参数进行统计学分析。结果：阻生下颌磨牙的萌出与其牙尖深度、牙根的形成水平、患者的年龄有关（P ＜0．05）。阻生下颌前磨牙的萌出与其牙尖深度、牙根的形成水平、牙齿的角度、患者的年龄有关（P ＜0．05），与牙齿的萌出间隙无关（P ＞0．05）。结论：在处理 CAIPT 时应考虑患者的年龄及阻生恒牙的牙尖深度、牙齿的角度、萌出间隙、牙根的形成水平。
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