摘要
目的 :通过对Head - gearActivator治疗早期骨性Ⅱ1类错病例矫治前后的X线头影进行测量 ,分析该矫治器对颌骨、牙齿、面型及软组织侧貌的影响。材料与方法 :选择 10名替牙期或恒牙早期的安氏Ⅱ1类错畸形的病例 ,男性 4人 ,女性 6人 ,平均年龄为 11岁。矫治器的设计是参照Graber和VanBeek的设计 ,平均治疗时间为 10 .2个月。选择 33个测量项目进行治疗前后头影测量 ,并运用SAS统计软件对测量结果进行统计分析。结果 :SNA减小 1.17° ,SNB增大 1.16° ,ANB减小 2 .3° :overjet明显减小 6 .0 7°,上下切牙突度减小 ,上前牙舌倾 ,下前牙唇倾 ;全面高及前后下面高均有显著增加 ;面型角和H角减小。说明颌骨、牙齿、面型及软组织侧貌等方面均有明显变化。结论 :Head -gearActivator能有效地达到控制上下颌矢状及垂直方向生长的目的 ,对改善软、硬组织面型。
Objective:This study analyzed the changes of dentofacial soft and hard tissue of skeletal Class Ⅱ 1 malocclusion induced by Activator with Headgear.Methods:10 mixed or early permanent dentition class Ⅱ 1 cases were selected:4 males and 6 females.The design of appliance was referred to Graber and Van Beek's.Average treatment time was 10.2 months.33 measurements were selected for cephalometric analysis before and after treatment,and statistical analysis was performed by SAS statistic software.Results:SNA,ANB,and overjet were decreased by 1.17°,2.3°,and 6.07°,respectively.While SNB increased by 1.16°.Upper incisors were inclined backward and lower incisors were inclined forward.The total facial height,anterior facial height,and posterior facial height were all increased.It indicated that there were significant changes of dentofacial of soft and hard tissue.
出处
《实用临床医学（江西）》
CAS
2000年第1期14-17,共4页
Practical Clinical Medicine
