CAJ | 학술논문

目的分析头帽肌激动器和普通功能矫治器治疗安氏Ⅱ类1分类错牙合患者上下牙列变化,从而进一步探讨功能矫治器治疗Ⅱ类错牙合的作用机理,为临床应用提供理论依据.方法选取Van Beek矫治器治疗安氏Ⅱ类1分类错牙合患者22例(简称VB治疗组),Twinblock矫治器治疗患者23例(简称TB治疗组).分别选取性别和骨型对应Van Beek治疗前后患者的未治疗安氏Ⅱ类1分类错牙合患者各88例,Twinblock治疗前后对照组患者各92例作为对照组,治疗组和对照组患者分别在治疗前后拍头颅侧位片.结果 VB组治疗后,上切牙压低,上切牙突度减少,上切牙唇倾度无改变,上第一磨牙推向后,下前牙唇倾度无变化,下第一磨牙伸长.TB治疗组,上切牙伸长,突度减少,上前牙明显舌倾,上第一磨牙推向后,下前牙唇倾,下第一磨牙伸长.结论 Van Beek矫治器能压低上前牙,对上切牙转矩有效控制,能控制下前牙唇倾度.普通功能矫治器治疗安氏Ⅱ类1分类错牙合使上前牙舌倾,下前牙唇倾.两类矫治器均能使上牙弓远中移动,但Van Beek矫治器作用更大,且均能使下第一磨牙伸长.
목적 분석두모기격동기화보통공능교치기치료안씨Ⅱ류1분류착아합환자상하아렬변화,종이진일보탐토공능교치기치료Ⅱ류착아합적작용궤리,위림상응용제공이론의거.방법 선취Van Beek교치기치료안씨Ⅱ류1분류착아합환자22례(간칭VB치료조),Twinblock교치기치료환자23례(간칭TB치료조).분별선취성별화골형대응Van Beek치료전후환자적미치료안씨Ⅱ류1분류착아합환자각88례,Twinblock치료전후대조조환자각92례작위대조조,치료조화대조조환자분별재치료전후박두로측위편.결과 VB조치료후,상절아압저,상절아돌도감소,상절아진경도무개변,상제일마아추향후,하전아진경도무변화,하제일마아신장.TB치료조,상절아신장,돌도감소,상전아명현설경,상제일마아추향후,하전아진경,하제일마아신장.결론 Van Beek교치기능압저상전아,대상절아전구유효공제,능공제하전아진경도.보통공능교치기치료안씨Ⅱ류1분류착아합사상전아설경,하전아진경.량류교치기균능사상아궁원중이동,단Van Beek교치기작용경대,차균능사하제일마아신장.
Objective To analyze effects of different orthopedic appliance (Van Beek Activator vs. Twinblock) on dentition in the pubertal patients with Class Ⅱ1 malocclusions. In order to clarify the mechanics of orthopedic treatment for clinical practice.Methods Group VB included 22 patients with ClassⅡ1 malocclusions (8 males and 14 females) who underwent successful treatment with Van Beek Activator. Group BT consisted of 23 patients with ClassⅡ1 malocclusions (14 males and 9 females) who underwent successful treatment with Twinblock. According to gender and skeletal pattern of each selected patients, 88 untreated patients with ClassⅡ1 malocclusions of two groups were selected as the control group of group VB and another 92 untreated patients with ClassⅡ1 malocclusions of two groups were selected as the control group of group TB respectively. The cephalometric radiograph of all patients were taken before and after treatment.Results In group VB, the upper incisors were intruded; the prominence of upper incisors decreased and the labial inclination of upper incisors remained the original situation. The upper first molars were pushed backward; the labial inclination of lower incisors remained the original situation; the lower molars were elongated. While in group TB, the upper incisors were elongated, inclined lingually and their prominence decreased; the upper first molars were pushed backward. The lower incisors inclined labially and lower molars were elongated.Conclusion Van Beek activator intruded the upper incisors and controlled the inclination of both the upper and lower incisor effectively. While the upper incisors inclined lingually and the lower incisors inclined labially after treatment of common orthopedic appliance like Twinblock. Besides, all appliance moved the upper dentition distally and the distance was much longer by Van Beek activator. The lower molar in all groups elongated.