改良长拉钩前牵引器与方丝弓矫治器联合矫治安氏Ⅲ类骨性错的研究

Treatment of Skeletal Class Ⅲ Malocclusion with Modified Protraction Headgear and Edgewise Appliance

关键词:  前牵引器  方丝弓矫治器  安氏Ⅲ类骨性错

Key words:  protraction headgear  edgewise appliance  skeletal class Ⅲ malocclusion

摘要:

为了解改良长拉钩前牵引器与方丝弓矫治器联合矫治安氏Ⅲ类骨性错的疗效及对颅面生长的影响,对23例用此法矫治的患者进行研究,结果发现平均治疗8个月后,前牙反解除,面型协调,颅面软硬组织头影测量研究发现:上颌骨向前向下移动,下颌骨向后向下旋转,前下面高增加,面凸角增大。研究表明,在生长发育期的安氏Ⅲ类骨性错的患者,通过每侧400g~500g的前牵引矫形力的矫治,可刺激上颌骨生长,同时抑制下颌骨生长,改善面型,免去外科手术之苦,取得满意的治疗效果。

Abstract:

In order to make sure the effects and soft and hard tissue profile change in the treatment of skeletal class Ⅲ malocclusion with modified protraction headgear and edgewise appliance, 23 patients were treated. After eight-month-treatment, the anterior crossbite was corrected and the facial balance was improved:maxilla moved forward and downward,the mandible turned backward and downward,lower facial height increased,soft tissue convexity increased from X-ray cephalometry for soft and hard tissue profile.It was suggested that the patients with skeletal class Ⅲ malocclusion in the adolescent growth were treated by the protraction orthopedic from headgear (400 to 500 g per side), the maxilla was stimulated developing forward and the mandible growth was inhibited, so facial profile can be improved without orthognathic surgical approach and the effecting of treatment was obtained satisfactorily.