中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2011年
5期
286-289
,共4页
错(牙合)%安氏Ⅲ类%正畸学,矫正%磨牙,第三
錯(牙閤)%安氏Ⅲ類%正畸學,矯正%磨牙,第三
착(아합)%안씨Ⅲ류%정기학,교정%마아,제삼
Malocclusion,Angle Class Ⅲ%Orthodontics,corrective%Molar,third
目的 分析拔除下颌第三磨牙矫治骨性Ⅲ类错(牙合)畸形后患者牙(牙合)面的变化,探讨该矫治模式的适应证、疗效和临床意义.方法 选择处于生长发育减速期和结束期的骨性Ⅲ类错(牙合)畸形患者19例(女性16例,男性3例),拔除下颌第三磨牙,配合摇椅形弓和短Ⅲ类牵引技术矫治骨性Ⅲ类错(牙合)畸形.通过头影测量对患者治疗前后的骨骼和牙齿变化进行评估,并进行配对t检验.结果 治疗后下颌切牙和磨牙发生明显的舌向移动,下切牙至Y轴的距离由治疗前的65.96 mm减至治疗后的63.98 mm,向远中移动(1.98±1.36)mm.下颌第一磨牙至Y轴的距离由治疗前的43.00 mm减至治疗后的39.84 mm,向远中移动(3.16±1.23)mm.矫治后下颌第一磨牙向远中倾斜(12.37±6.81)°,前牙覆盖增加(2.75±1.65)mm,矫治前后差异有统计学意义(P<0.05).结论 拔除下颌第三磨牙配合摇椅形弓和短Ⅲ类牵引技术可明显远中移动下颌磨牙和切牙.
目的 分析拔除下頜第三磨牙矯治骨性Ⅲ類錯(牙閤)畸形後患者牙(牙閤)麵的變化,探討該矯治模式的適應證、療效和臨床意義.方法 選擇處于生長髮育減速期和結束期的骨性Ⅲ類錯(牙閤)畸形患者19例(女性16例,男性3例),拔除下頜第三磨牙,配閤搖椅形弓和短Ⅲ類牽引技術矯治骨性Ⅲ類錯(牙閤)畸形.通過頭影測量對患者治療前後的骨骼和牙齒變化進行評估,併進行配對t檢驗.結果 治療後下頜切牙和磨牙髮生明顯的舌嚮移動,下切牙至Y軸的距離由治療前的65.96 mm減至治療後的63.98 mm,嚮遠中移動(1.98±1.36)mm.下頜第一磨牙至Y軸的距離由治療前的43.00 mm減至治療後的39.84 mm,嚮遠中移動(3.16±1.23)mm.矯治後下頜第一磨牙嚮遠中傾斜(12.37±6.81)°,前牙覆蓋增加(2.75±1.65)mm,矯治前後差異有統計學意義(P<0.05).結論 拔除下頜第三磨牙配閤搖椅形弓和短Ⅲ類牽引技術可明顯遠中移動下頜磨牙和切牙.
목적 분석발제하합제삼마아교치골성Ⅲ류착(아합)기형후환자아(아합)면적변화,탐토해교치모식적괄응증、료효화림상의의.방법 선택처우생장발육감속기화결속기적골성Ⅲ류착(아합)기형환자19례(녀성16례,남성3례),발제하합제삼마아,배합요의형궁화단Ⅲ류견인기술교치골성Ⅲ류착(아합)기형.통과두영측량대환자치료전후적골격화아치변화진행평고,병진행배대t검험.결과 치료후하합절아화마아발생명현적설향이동,하절아지Y축적거리유치료전적65.96 mm감지치료후적63.98 mm,향원중이동(1.98±1.36)mm.하합제일마아지Y축적거리유치료전적43.00 mm감지치료후적39.84 mm,향원중이동(3.16±1.23)mm.교치후하합제일마아향원중경사(12.37±6.81)°,전아복개증가(2.75±1.65)mm,교치전후차이유통계학의의(P<0.05).결론 발제하합제삼마아배합요의형궁화단Ⅲ류견인기술가명현원중이동하합마아화절아.
Objective To assess the skeletodental changes after extracting mandibular third molars in skeletal Class Ⅲ patients in both post-puberty and adult.Methods Nineteen skeletal Class Ⅲ patients in post-puberty or adult(16 female,3 male)successfully treated with extracting mandibular third molars were included in the study.Cephalograms were analyzed to assess the skeletal and dental changes before and after treatment.Paired t-test was performed for statistical analysis of the data.Results The results revealed that the main changes were upright[(12.37±6.81)°]and distal movement[(3.16±1.23)mm]of the mandibular molars,and retraction[(1.98 ±1.36)mm]of the mandibular incisors.There was a significant improvement in overjet[(2.75±1.65)mm].Conclusions The lower molars and incisors could be distalized significantly with extraction of the lower third molars.
