CAJ | 학술논문

目的探讨改良Nance弓在矫治上颌腭侧埋伏尖牙时矫治力方向设计及支抗设计的作用.方法 7例单侧上颌腭侧埋伏尖牙均采用外科-正畸联合治疗.手术暴露埋伏尖牙牙冠,粘接舌侧扣;戴入改良Nance弓,利用改良Nance弓位于腭侧不锈钢丝上的附钩,先将尖牙冠向后牵引绕过侧切牙的牙根,直到位于正常尖牙间隙的腭侧,如尖牙间隙不足,则粘结上颌托槽,预备尖牙间隙;再采用直丝弓技术将埋伏尖牙向唇侧移动,排齐牙列,调整咬合关系.对治疗后牙齿的松动度、牙髓活力等进行观察.结果 7位埋伏尖牙均被牵引至牙弓的正常位置;牙髓活力测试正常,牙周附着良好.结论改良Nance弓在矫治上颌腭侧埋伏尖牙时,在矫治力方向设计和支抗控制方面有独特优点和作用.
목적 탐토개량Nance궁재교치상합악측매복첨아시교치력방향설계급지항설계적작용.방법 7례단측상합악측매복첨아균채용외과-정기연합치료.수술폭로매복첨아아관,점접설측구;대입개량Nance궁,이용개량Nance궁위우악측불수강사상적부구,선장첨아관향후견인요과측절아적아근,직도위우정상첨아간극적악측,여첨아간극불족,칙점결상합탁조,예비첨아간극;재채용직사궁기술장매복첨아향진측이동,배제아렬,조정교합관계.대치료후아치적송동도、아수활력등진행관찰.결과 7위매복첨아균피견인지아궁적정상위치;아수활력측시정상,아주부착량호.결론 개량Nance궁재교치상합악측매복첨아시,재교치력방향설계화지항공제방면유독특우점화작용.
Objective To investigate controlof anchorage and force direction of Modified Nance Arch on treating maxillary palatally impacted canines.Methods 7 maxillary unilateral palatally impacted canines all underwent surgery management and orthodontic treatment.After full flap closure,a lingual knot button was firmly bonded on the surfaces of the impacted canine crowns.The Modified Nach Arch was installed.The hook attached to the lingual stainless steel wire of the Archtracted the impacted canines backward across the root of the lateral incisor and to the palatal position of its normal clearance.If the space is not enough,the maxillary dentition will be bonded with brackets to create space.Then canine was moved labially by straight wire appliance.The condition of pulp and periodontal attachment were observed after treatment.Results 7 unilateral maxillary palatally impacted canines were tracted to normal position,the pulp condition and periodontal attachment are normal.Conclusions The Modified Nance Arch has unique advantages in treating maxillary palatally impacted canines on control of anchorage and force direction.