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
1期
2-6
,共5页
艾婷婷%陈贵%林久祥%胡炜
艾婷婷%陳貴%林久祥%鬍煒
애정정%진귀%림구상%호위
改型腭杆%过长上颌第二磨牙%压低
改型腭桿%過長上頜第二磨牙%壓低
개형악간%과장상합제이마아%압저
Modified transpalatal arch%Overerupted upper second molar%Intrusion
目的 评价使用改型腭杆辅助压低过长上颌第二磨牙的临床效果.方法 选取13名需要压低过长上颌第二磨牙的成年患者,共18颗牙.采集矫治前、后记存模型进行激光扫描,在Rapidform 2006软件中进行三维测量,明确过长牙和支抗牙各牙尖点在三维方向上的移动量,通过曲面断层片观察过长牙与支抗牙压低前后的牙根吸收情况.结果 13名患者均完成过长牙的压低,平均疗程为5.5个月.过长后牙各牙尖点(近中颊尖、远中颊尖、近中腭尖、远中腭尖)分别被压低了0.90 mm、0.94 mm、1.78 mm和1.78 mm,远中移动了1.06 mm、1.06 mm、1.03 mm、0.92 mm,腭向移动了0.95 mm、0.88 mm、1.10 mm、0.85 mm,配对样本t检验显示差异具有极显著统计学意义(P＜0.001).而支抗牙的移动量不明显.X线片显示被压低的过长牙与支抗牙均未出现明显牙根吸收.结论 改型腭杆辅助压低过长上颌第二磨牙是一种有效便捷的正畸治疗手段.
目的 評價使用改型腭桿輔助壓低過長上頜第二磨牙的臨床效果.方法 選取13名需要壓低過長上頜第二磨牙的成年患者,共18顆牙.採集矯治前、後記存模型進行激光掃描,在Rapidform 2006軟件中進行三維測量,明確過長牙和支抗牙各牙尖點在三維方嚮上的移動量,通過麯麵斷層片觀察過長牙與支抗牙壓低前後的牙根吸收情況.結果 13名患者均完成過長牙的壓低,平均療程為5.5箇月.過長後牙各牙尖點(近中頰尖、遠中頰尖、近中腭尖、遠中腭尖)分彆被壓低瞭0.90 mm、0.94 mm、1.78 mm和1.78 mm,遠中移動瞭1.06 mm、1.06 mm、1.03 mm、0.92 mm,腭嚮移動瞭0.95 mm、0.88 mm、1.10 mm、0.85 mm,配對樣本t檢驗顯示差異具有極顯著統計學意義(P＜0.001).而支抗牙的移動量不明顯.X線片顯示被壓低的過長牙與支抗牙均未齣現明顯牙根吸收.結論 改型腭桿輔助壓低過長上頜第二磨牙是一種有效便捷的正畸治療手段.
목적 평개사용개형악간보조압저과장상합제이마아적림상효과.방법 선취13명수요압저과장상합제이마아적성년환자,공18과아.채집교치전、후기존모형진행격광소묘,재Rapidform 2006연건중진행삼유측량,명학과장아화지항아각아첨점재삼유방향상적이동량,통과곡면단층편관찰과장아여지항아압저전후적아근흡수정황.결과 13명환자균완성과장아적압저,평균료정위5.5개월.과장후아각아첨점(근중협첨、원중협첨、근중악첨、원중악첨)분별피압저료0.90 mm、0.94 mm、1.78 mm화1.78 mm,원중이동료1.06 mm、1.06 mm、1.03 mm、0.92 mm,악향이동료0.95 mm、0.88 mm、1.10 mm、0.85 mm,배대양본t검험현시차이구유겁현저통계학의의(P＜0.001).이지항아적이동량불명현.X선편현시피압저적과장아여지항아균미출현명현아근흡수.결론 개형악간보조압저과장상합제이마아시일충유효편첩적정기치료수단.
Objective To evaluate the clinical effect on intrusion of overerupted upper second molars with modified transpalatal arch.Methods Thirteen adult patients with eighteen overerupted upper second molars were treated with modified transpalatal arch.Record models were taken before and after orthodontic treatment.After models scanning,the movements of overerupted second molars and anchorage teeth were measured three dimensionally by Rapidform 2006 software.The root resorptions were assessed with panoramic radiographs.Results All overerupted upper second molars were intruded successfully.The average treatment time was 5.5 months.The movement of four cusps of overerupted molars were measured at cusp apex of MB,DB,MP and DP.The intrusion distances were 0.90 mm,0.94 mm,1.78 mm,and 1.78 m.The distallization distances were 1.06 mm,1.06 mm,1.03 mm and 0.92 mm.The palatal movement distances were 0.95 mm,0.88 mm,1.10 mm and 0.85 mm.T-test for paired samples showed a statistically significant difference (P＜0.001).The movements of anchorage teeth were not obvious.Conclusions The modified transpalatal arch was an effective and simple method to intrude overerupted upper second molars.
