CAJ | 학술논문

目的：研究正畸方法直立阻生磨牙后前移关闭缺失第一恒磨牙间隙的疗效。方法：样本共计32例，下颌第一恒磨牙已拔除或无保留价值，且伴同侧下颌第三磨牙阻生。口内辅弓法直立阻生磨牙，直丝弓矫治技术关闭下颌第一磨牙间隙。治疗前后检查第二恒磨牙和第三恒磨牙附着丧失（Attachment Loss AL），统计使用SPSS 13.0统计学软件包，分析采用非参数检验附着丧失的变化。结果：32例阻生齿均直立，下颌第一恒磨牙缺隙关闭。X线片检查示：牙根平行良好，阻生齿周围骨质再生良好，牙槽嵴形态正常，牙周膜清晰。所有病例均取得满意的疗效。治疗后较治疗前出现少量附着丧失量增加，差异具有显著性（P＜0.05）。结论：下颌第一磨牙缺失后可通过正畸治疗移动第二磨牙且直立前倾阻生第三磨牙前移代替原第一、二磨牙，疗效较好，可见少量附着丧失，建议治疗前评估患者附着龈水平和牙周状况，降低治疗风险。
목적：연구정기방법직립조생마아후전이관폐결실제일항마아간극적료효。방법：양본공계32례，하합제일항마아이발제혹무보류개치，차반동측하합제삼마아조생。구내보궁법직립조생마아，직사궁교치기술관폐하합제일마아간극。치료전후검사제이항마아화제삼항마아부착상실（Attachment Loss AL），통계사용SPSS 13.0통계학연건포，분석채용비삼수검험부착상실적변화。결과：32례조생치균직립，하합제일항마아결극관폐。X선편검사시：아근평행량호，조생치주위골질재생량호，아조척형태정상，아주막청석。소유병례균취득만의적료효。치료후교치료전출현소량부착상실량증가，차이구유현저성（P＜0.05）。결론：하합제일마아결실후가통과정기치료이동제이마아차직립전경조생제삼마아전이대체원제일、이마아，료효교호，가견소량부착상실，건의치료전평고환자부착간수평화아주상황，강저치료풍험。
Objective To demonstrate the orthodontic effects of uprighting the impacted molars and closing the space of missing first molars. Methods 32 cases were selected with missing mandibular first molar and impacted mandibular third molars.The impacted molars were uprighted by auxiliary light wire and coiling spring.Straight wire appliance was used to close the space of missing first molar. Attachment loss(AL)were recorded before and after treatment.The data were analyzed by SPSS Statistical Package. Results All cases were uprighted with space closed.Attachment loss was found with significant differences(P<0.05). Conclusion The results showed that the method was practical and reliable for correcting impacted mandibular molars.Attachment loss was detected in some patients. Evaluation of condition of attachment gingival and oral hygiene before treatment is suggested.