中华口腔正畸学杂志
中華口腔正畸學雜誌
중화구강정기학잡지
CHINESE JOURNAL OF ORTHODONTICS
2014年
4期
185-189
,共5页
不完全易位%阻生上尖牙%定位%牵引
不完全易位%阻生上尖牙%定位%牽引
불완전역위%조생상첨아%정위%견인
Incomplete transposition%Impacted canine%Position%Traction
目的 探讨埋伏阻生上尖牙与侧切牙发生不完全易位后的导萌方法,将易位的尖牙牵引至正常位置,以达到美观效果,行使正常功能.方法 选择不完全易位的单侧埋伏阻生上尖牙患者12例(男6例,女6例),年龄11.5～21.0岁,平均14.5岁,其中尖牙偏腭侧阻生7例,偏颊侧阻生5例.外科手术暴露埋伏牙,应用固定矫治技术,调整牵引方向将埋伏牙牵引至正常位置.结果 易位的尖牙均与侧切牙发生位置交换,尖牙移至正常位置,且具有良好的冠根方向和咬合关系,尖牙及侧切牙均无明显根吸收.平均疗程19个月.结论 将不完全易位的埋伏尖牙牵引入正常位置的难点在于易位埋伏的尖牙翻越相邻侧切牙牙根时,二者不相互阻挡.解决此难点的关键是精确判断尖牙牙冠与侧切牙牙根的位置关系,适时调整牵引方向.
目的 探討埋伏阻生上尖牙與側切牙髮生不完全易位後的導萌方法,將易位的尖牙牽引至正常位置,以達到美觀效果,行使正常功能.方法 選擇不完全易位的單側埋伏阻生上尖牙患者12例(男6例,女6例),年齡11.5～21.0歲,平均14.5歲,其中尖牙偏腭側阻生7例,偏頰側阻生5例.外科手術暴露埋伏牙,應用固定矯治技術,調整牽引方嚮將埋伏牙牽引至正常位置.結果 易位的尖牙均與側切牙髮生位置交換,尖牙移至正常位置,且具有良好的冠根方嚮和咬閤關繫,尖牙及側切牙均無明顯根吸收.平均療程19箇月.結論 將不完全易位的埋伏尖牙牽引入正常位置的難點在于易位埋伏的尖牙翻越相鄰側切牙牙根時,二者不相互阻擋.解決此難點的關鍵是精確判斷尖牙牙冠與側切牙牙根的位置關繫,適時調整牽引方嚮.
목적 탐토매복조생상첨아여측절아발생불완전역위후적도맹방법,장역위적첨아견인지정상위치,이체도미관효과,행사정상공능.방법 선택불완전역위적단측매복조생상첨아환자12례(남6례,녀6례),년령11.5～21.0세,평균14.5세,기중첨아편악측조생7례,편협측조생5례.외과수술폭로매복아,응용고정교치기술,조정견인방향장매복아견인지정상위치.결과 역위적첨아균여측절아발생위치교환,첨아이지정상위치,차구유량호적관근방향화교합관계,첨아급측절아균무명현근흡수.평균료정19개월.결론 장불완전역위적매복첨아견인입정상위치적난점재우역위매복적첨아번월상린측절아아근시,이자불상호조당.해결차난점적관건시정학판단첨아아관여측절아아근적위치관계,괄시조정견인방향.
Objective To discuss an challenging treatment approach for maxillary impacted canine-lateral incisor incomplete transposition so that incomplete transposed canines can be guided to erupt to their normal position in the arch and warrant good function and esthetic outcome.Methods Twelve patients(6 female,6 male) aged 11.5-21.0 years old (average was 14.5 years old) with unilateral incomplete transposed maxillary canines (7 palatally positioned,5 buccally) were included in this study.All the impacted canines were brought to their normal position with fixed orthodontic appliances to guide traction direction after surgical exposure.Results Displacedd canines were brought to their normal positions with normal angulation and occlusal relationship and without root resorption after an average of 19-month-treatment.Conclusions The difficulties of the treatment are in the ways of avoiding roots contacts and root resorptions during correction of transposition.The key point is to accurately recognize the relationship between the canine crown and lateral incisor root.In-time adjustment of traction direction can guide the incomplete transposed impacted canine into their normal position in the arch.
