摘要
目的 寻找局部恒牙迟萌的最佳治疗时机。方法 治疗Ⅰ组的11例患儿在其迟萌恒牙根形成3/4以前拔除乳牙或切龈助萌;治疗Ⅱ组的8例患儿在其迟萌恒牙根完成3/4以上时拔除乳牙或切龈助萌。结果 治疗Ⅰ组的迟萌恒牙均与对颌牙建立正常关系,而治疗Ⅱ组除2颗下颌第二双尖牙外,其余迟萌恒牙均未与对颌牙建立正常关系。结论 建议在恒牙根完成3/4以前治疗局部恒牙迟萌。
Objective To find out the treatmen timing of local retarded eruption of permanent teeth by studying the condition of root formation. Methods For 11 cases of the first treatment group, the gum was or carved the primary teeth were extracted before root length of the successor attained 3/4, and for 8 cases of the second treatment group, such treatments were done when root length of the successor exceeded 3/4 or attained approximately completion. Results All successors of the first treatment group established the normal occlusion. With the exception of two mandibular second premo-lars, all successors of the second treatment group didn' t establish the normal occlusion. Conclusion The local retarded eruption of permanent teeth should be treated before root length of the successor attains 3/4.
出处
《广东牙病防治》
2002年第4期247-248,共2页
Journal of Dental Prevention and Treatment
关键词
恒牙根
形成状态
恒牙迟萌
处置时机
Tooth formation Retarded eruption of permanent teeth
