Barbre R E, Sinclair P M
University of North Carolina, School of Dentistry, Orthodontic Department, Chapel Hill 27599-7450.
Angle Orthod. 1991 Summer;61(2):93-102. doi: 10.1043/0003-3219(1991)061<0093:ACEOAO>2.0.CO;2.
The purpose of this study was to evaluate treatment effects of the magnetic active vertical corrector appliance (AVC) when used to treat anterior openbites in a sample of growing patients. Twenty-five patients with a mean age of 10 years 8 months underwent AVC treatment for an average of almost 8 months. They had an average of 3 mm of anterior openbite closure during the treatment period, primarily due to maxillary and mandibular molar intrusion. Additional contributions to correction of the openbite were related to maxillary incisor eruption and lingual tipping combined with mandibular incisor lingual movement. A small amount of mandibular rotation with closure of the bite and decrease in anterior force height was observed. Anteroposterior skeletal change attributed to the AVC therapy was minimal.
本研究的目的是评估磁性主动垂直矫治器（AVC）用于治疗生长发育期患者前牙开（牙合）的治疗效果。25例平均年龄为10岁8个月的患者接受了平均近8个月的AVC治疗。在治疗期间，他们的前牙开（牙合）平均关闭了3mm，主要是由于上颌和下颌磨牙的压低。对开（牙合）矫正的其他贡献与上颌切牙萌出、舌倾以及下颌切牙舌向移动有关。观察到少量下颌旋转，伴有咬合关闭和前牙垂直高度降低。AVC治疗引起的前后向骨骼变化极小。
