中华口腔正畸学杂志
中華口腔正畸學雜誌
중화구강정기학잡지
CHINESE JOURNAL OF ORTHODONTICS
2009年
1期
32-37
,共6页
白丁%陈坤%周佳卉%曹礼
白丁%陳坤%週佳卉%曹禮
백정%진곤%주가훼%조례
第二双尖牙%拔牙%牙齿移动%美学
第二雙尖牙%拔牙%牙齒移動%美學
제이쌍첨아%발아%아치이동%미학
Second premolar%Extraction%Teeth movement%Esthetics
目的 研究拔除四个第二双尖牙矫治轻度双颌前突病例后,上、下颌前牙及磨牙向拔牙间隙各自的牙移动量以及移动类型.方法 收集于四川大学华西口腔医院正畸科使用HX直丝弓矫治器,因轻度双颌前突求治而拔除四个第二双尖牙病例26例,在头颅侧位片上,以治疗后(牙合)平面、腭平面和下颌平面为参考平面,测量矫治前后上、下颌切牙和磨牙向拔牙间隙移动量和移动类型.结果 上颌拔牙间隙由前牙后移占(50.4±11.5)%,磨牙前移占(49.6±11.5)%;下颌拔牙间隙由前牙后移占(46.2±10.7)%,磨牙前移占(53.8±10.7)%;上中切牙移动的旋转中心位于上中切牙根尖点根方-4.28～11.96 mm的范围内(5.00±5.27 mm),下中切牙移动的旋转中心位于下中切牙根尖点根方0.85～25.25 mm的范围内(14.16±9.27 mm);磨牙均为整体近中移动.结论 拔除四个第二双尖牙矫治轻度双颌前突,能较好地维持前牙的唇舌向倾斜度和前后向位置,并能较好地保持面部美观、微笑丰满度和后牙直立度,达到良好的美观效果.
目的 研究拔除四箇第二雙尖牙矯治輕度雙頜前突病例後,上、下頜前牙及磨牙嚮拔牙間隙各自的牙移動量以及移動類型.方法 收集于四川大學華西口腔醫院正畸科使用HX直絲弓矯治器,因輕度雙頜前突求治而拔除四箇第二雙尖牙病例26例,在頭顱側位片上,以治療後(牙閤)平麵、腭平麵和下頜平麵為參攷平麵,測量矯治前後上、下頜切牙和磨牙嚮拔牙間隙移動量和移動類型.結果 上頜拔牙間隙由前牙後移佔(50.4±11.5)%,磨牙前移佔(49.6±11.5)%;下頜拔牙間隙由前牙後移佔(46.2±10.7)%,磨牙前移佔(53.8±10.7)%;上中切牙移動的鏇轉中心位于上中切牙根尖點根方-4.28～11.96 mm的範圍內(5.00±5.27 mm),下中切牙移動的鏇轉中心位于下中切牙根尖點根方0.85～25.25 mm的範圍內(14.16±9.27 mm);磨牙均為整體近中移動.結論 拔除四箇第二雙尖牙矯治輕度雙頜前突,能較好地維持前牙的脣舌嚮傾斜度和前後嚮位置,併能較好地保持麵部美觀、微笑豐滿度和後牙直立度,達到良好的美觀效果.
목적 연구발제사개제이쌍첨아교치경도쌍합전돌병례후,상、하합전아급마아향발아간극각자적아이동량이급이동류형.방법 수집우사천대학화서구강의원정기과사용HX직사궁교치기,인경도쌍합전돌구치이발제사개제이쌍첨아병례26례,재두로측위편상,이치료후(아합)평면、악평면화하합평면위삼고평면,측량교치전후상、하합절아화마아향발아간극이동량화이동류형.결과 상합발아간극유전아후이점(50.4±11.5)%,마아전이점(49.6±11.5)%;하합발아간극유전아후이점(46.2±10.7)%,마아전이점(53.8±10.7)%;상중절아이동적선전중심위우상중절아근첨점근방-4.28～11.96 mm적범위내(5.00±5.27 mm),하중절아이동적선전중심위우하중절아근첨점근방0.85～25.25 mm적범위내(14.16±9.27 mm);마아균위정체근중이동.결론 발제사개제이쌍첨아교치경도쌍합전돌,능교호지유지전아적진설향경사도화전후향위치,병능교호지보지면부미관、미소봉만도화후아직립도,체도량호적미관효과.
Objective To investigate the movement distance and moving pattern of incisors and molars after orthodontic treatment with four second premolar removal in the slight dental protrusion patients.Methods 26 patients treated in Dept.of Orthondontics,Hua Xi Dental Hospital were recruited into this studdy .The moving distance and pattern of incisors and first molars were measured relative to the post-treatment occlusal plane, palatal plane and mandibular plane on the X-ray cephalometries.Results In the upper arch,the anterior segnemt took up 50.4±11.5% of the extraction space,while in the lower arch it was 46.2±10.7%.the rotation center of the upper central incisor located at -4.28～11.96 mm apical to the apex point,while the lower central incisors located 0.85～25.25 mm apical to the apex.All the molars were moved bodily.Conclusions The slight bimaxillary dental protrusion patients can be successfully treated with four second premolar removal.Following the treatment,the position and inclination of the upper incisors would be properly maintained.Profile esthetics and smile fullness would be achieved as well.
