中华口腔正畸学杂志
中華口腔正畸學雜誌
중화구강정기학잡지
CHINESE JOURNAL OF ORTHODONTICS
2015年
1期
2-9
,共8页
微螺钉支抗%闭合式牵引%下切牙压低%深覆(牙合)
微螺釘支抗%閉閤式牽引%下切牙壓低%深覆(牙閤)
미라정지항%폐합식견인%하절아압저%심복(아합)
Miniscrew anchorage%Closed traction technique%Mandibular incisor intrusion%Deep overbite
目的 评价微螺钉支抗闭合式牵引压低下颌切牙矫治成人深覆(牙合)的有效性.方法 选择20例符合纳入标准的成人深覆(牙合)患者,在下颌中切牙间切开黏膜,于下颌骨正中联合部位植入微螺钉一枚,并以结扎丝连接穿出黏膜形成牵引钩,加力进行下前牙压低治疗.正畸治疗前后分别拍摄头颅侧位片,并进行头影测量的分析比较.结果 20例患者矫治后覆(牙合)均达正常范围,平均减小4.0 mm(P＜0.001).下切牙抗力中心的垂直向变化值平均2.8mm,具有显著性意义(P＜0.001).同时,下切牙显著性唇向倾斜,L1/MP和L1/NB平均增加5.8°和2.3°,上下颌中切牙角显著性减小(P＜0.01).伴随切牙的压低和唇倾,(牙合)平面发生顺时针变化,治疗后MP/OP显著性减小3.5°(P＜0.001).而下颌磨牙在轴倾度和垂直向上均无显著性变化,下颌切牙压低治疗后未见显著根吸收现象.结论 应用微螺钉支抗取得压低下切牙的良好效果,是矫治成人深覆(牙合)的有效手段.
目的 評價微螺釘支抗閉閤式牽引壓低下頜切牙矯治成人深覆(牙閤)的有效性.方法 選擇20例符閤納入標準的成人深覆(牙閤)患者,在下頜中切牙間切開黏膜,于下頜骨正中聯閤部位植入微螺釘一枚,併以結扎絲連接穿齣黏膜形成牽引鉤,加力進行下前牙壓低治療.正畸治療前後分彆拍攝頭顱側位片,併進行頭影測量的分析比較.結果 20例患者矯治後覆(牙閤)均達正常範圍,平均減小4.0 mm(P＜0.001).下切牙抗力中心的垂直嚮變化值平均2.8mm,具有顯著性意義(P＜0.001).同時,下切牙顯著性脣嚮傾斜,L1/MP和L1/NB平均增加5.8°和2.3°,上下頜中切牙角顯著性減小(P＜0.01).伴隨切牙的壓低和脣傾,(牙閤)平麵髮生順時針變化,治療後MP/OP顯著性減小3.5°(P＜0.001).而下頜磨牙在軸傾度和垂直嚮上均無顯著性變化,下頜切牙壓低治療後未見顯著根吸收現象.結論 應用微螺釘支抗取得壓低下切牙的良好效果,是矯治成人深覆(牙閤)的有效手段.
목적 평개미라정지항폐합식견인압저하합절아교치성인심복(아합)적유효성.방법 선택20례부합납입표준적성인심복(아합)환자,재하합중절아간절개점막,우하합골정중연합부위식입미라정일매,병이결찰사련접천출점막형성견인구,가력진행하전아압저치료.정기치료전후분별박섭두로측위편,병진행두영측량적분석비교.결과 20례환자교치후복(아합)균체정상범위,평균감소4.0 mm(P＜0.001).하절아항력중심적수직향변화치평균2.8mm,구유현저성의의(P＜0.001).동시,하절아현저성진향경사,L1/MP화L1/NB평균증가5.8°화2.3°,상하합중절아각현저성감소(P＜0.01).반수절아적압저화진경,(아합)평면발생순시침변화,치료후MP/OP현저성감소3.5°(P＜0.001).이하합마아재축경도화수직향상균무현저성변화,하합절아압저치료후미견현저근흡수현상.결론 응용미라정지항취득압저하절아적량호효과,시교치성인심복(아합)적유효수단.
Objective The purpose of this study is to investigate the effectiveness of the mandibular incisors intrusion by using closed miniscrew anchorage to correct the deep overbite in adult patients.Methods The sample comprised 20 adult patients with deep overbite who met the inclusion criteria.After surgical exposure of mandibular symphysis,one miniscrew was placed and closed up.Stainless steel ligature wire was tied with one end to miniscrew and the other end forming a cook exposed in oral cavity for later intrusion of mandibular incisors.Pre-and post-treatment cephalometric radiographs were measured and compared.Results All the patients had their deep overbite corrected,with an average decrease of 4 mm (P＜0.001).The resistant center of mandibular incisors was intruded 2.8 mm remarkably (P＜0.001).Meanwhile,significant labial proclination of the mandibular incisors were observed with increases in L1/MP and L1/NB (5.8° and 2.3°,respectively) and the decrease in Ul/L1 (P＜0.01).With lower incisor intrusion and inclination,occlusal plane showed clockwise rotation,and the post-treatment MP/OP decreased significantly by 3.5° (P＜0.001).The mandibular molars did not change significantly in inclination and vertical dimension.No significant root resorption of the incisors was found.Conclusions Intrusion of mandibular incisors through miniscrew anchorage could be used as an efficient method to correct deep overbite in adult patients.
