CAJ | 학술논문

目的：探讨控根辅弓对直丝弓矫治器患者的上颌切牙转矩效果。方法：选择22例安氏Ⅱ1拔牙矫治的患者，采用直丝弓矫治器矫治，在精细调整阶段配合控根辅弓对过度直立或内倾的上颌切牙进行正转矩。按主弓丝不同分为2组，14例主弓丝为0．46 mm ×0．64 mm 的不锈钢方丝，8例主弓丝为0．46 mm 的不锈钢圆丝。对22例上颌切牙转矩前后的 X 线头影测量结果采用 t 检验进行统计分析。结果：22例上颌切牙转矩后的 X 线头影测量结果显示，1-SN、UIa-NA 值增加（P ＜0．01），控根辅弓对上切牙的正转矩效果明显；转矩的时间，主弓丝为圆丝上颌切牙转矩快于主弓丝为方丝，P ＜0．05。结论：在直丝弓矫治的精细调整阶段，配合前牙控根辅弓，是对内收后过度直立或舌倾的上颌切牙实现转矩的简单、有效的方法。
목적：탐토공근보궁대직사궁교치기환자적상합절아전구효과。방법：선택22례안씨Ⅱ1발아교치적환자，채용직사궁교치기교치，재정세조정계단배합공근보궁대과도직립혹내경적상합절아진행정전구。안주궁사불동분위2조，14례주궁사위0．46 mm ×0．64 mm 적불수강방사，8례주궁사위0．46 mm 적불수강원사。대22례상합절아전구전후적 X 선두영측량결과채용 t 검험진행통계분석。결과：22례상합절아전구후적 X 선두영측량결과현시，1-SN、UIa-NA 치증가（P ＜0．01），공근보궁대상절아적정전구효과명현；전구적시간，주궁사위원사상합절아전구쾌우주궁사위방사，P ＜0．05。결론：재직사궁교치적정세조정계단，배합전아공근보궁，시대내수후과도직립혹설경적상합절아실현전구적간단、유효적방법。
Objective:To explore the torque effect of controlling root auxiliary arch on the straight wire appliance on maxillary anterior teeth.Methods:22 patients with class Ⅱ1 extraction treatment,treated with straightwire appliance,at the detailing treatment stage were treated with controlling root auxiliary arch over the erect or introverted maxillary incisors for positive torque.The main arch wire of 0.46 mm ×0.64 mm stainless steel edge wire was used in 14 cases,the main arch wire of 0.46 mm stainless steel round wire was used in 8 cases.Cephalometric results before and after maxillary incisor torque were analyzed by t test.Results:After maxillary incisor torque in the 22 cases 1-SN and UIa-NA value increased(P <0.01),positive torque was achieved by controlling root auxiliary arch on the upper incisors;the round wire maxillary incisor torque worked faster than the edge wire(P <0.05).Conclusion:At the detailing stage of treatment straight wire appliance on front teeth,controlling root auxiliary arch is simple and effective in the treatment of exces-sive erect or lingual inclination of maxillary incisor.