Kim Jae-Woo, Choi Jin-Young, Kim Min-Ji, Bin Xu, Kim Seong-Hun
Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
Korean J Orthod. 2022 Jul 22;52(5):354-361. doi: 10.4041/kjod22.140.
To analyze the overall treatment effects in terms of the amount of uprighting with changes in the three-dimensional positions of the mandibular posterior teeth after applying the biocreative reverse curve (BRC) system.
Thirty-four patients (mean age, 20.5 ± 8.56 years) were treated using the BRC system (mean period, 8.17 ± 2.19 months). Cone-beam computed tomography was performed before treatment and after treatment with the BRC system. The three-dimensional movement of each tooth was analyzed in the coordinate system at points on the crown and root apex. A paired -test was used to analyze the treatment effects of the BRC system.
The application of the BRC system spanning from the first premolar to the second molar resulted not only in buccal and distal uprighting, but also in increased buccal and distal tipping of the teeth. The premolars and the first molar were extruded, and the second molar was intruded.
When the BRC system is applied, simultaneous distal and buccal uprighting of the premolars and molars can be achieved bilaterally using a temporary skeletal anchorage device without unnecessary movement of the anterior teeth.
应用生物可吸收反向曲（BRC）系统，根据下颌后牙三维位置变化时的直立量分析整体治疗效果。
34例患者（平均年龄20.5±8.56岁）采用BRC系统进行治疗（平均疗程8.17±2.19个月）。在使用BRC系统治疗前和治疗后进行锥形束计算机断层扫描。在牙冠和根尖点的坐标系中分析每颗牙齿的三维移动。采用配对t检验分析BRC系统的治疗效果。
从第一前磨牙到第二磨牙应用BRC系统，不仅导致牙齿颊向和远中直立，还导致牙齿颊向和远中倾斜增加。前磨牙和第一磨牙伸长，第二磨牙压低。
应用BRC系统时，使用临时骨锚固装置可双侧同时实现前磨牙和磨牙的远中及颊向直立，而无需前牙的不必要移动。
