Liu Dawei, Li Jing, Lei Feifei, Wang Xuedong, Zhou Yanheng
1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.
2 Sunny Dental Clinic, Shenzhen, China.
J Int Med Res. 2019 Jan;47(1):84-95. doi: 10.1177/0300060518795541. Epub 2018 Sep 10.
The goal of this study was to analyze skeletal, dental, and soft tissue changes of patients treated with customized lingual systems and to evaluate the clinical effectiveness of miniscrew anchorage.
Nine upper first premolar extraction patients who were treated with customized lingual appliances were included in this study. Miniscrews were used for reinforcement of molar anchorage. Cephalometric films and study models were obtained before treatment (T1), after alignment (T2), and after treatment (T3). Treatment effects were analyzed by cephalometric radiographs and study models.
The upper anterior teeth were retracted significantly at T2 and T3 (4.41 ± 4.14 mm and 5.51 ± 2.48 mm, respectively). During space closure, the upper first molars showed slight mesial movement (1.50 ± 1.97 mm). The intercanine width of the upper arch increased at T2 (1.59 ± 1.81 mm), but decreased at T3 (0.11 ± 1.00 mm). The sella-nasion-A, A-nasion-B, and mandibular plane angles were not significantly changed at T3. The upper lip showed continuous retraction at both T2 and T3 (1.40 ± 1.46 mm and 2.32 ± 2.48 mm, respectively).
By using miniscrew anchorage for lingual orthodontics, patients' dental and soft tissue changes considerably improved and molar anchorage was reinforced.
本研究的目的是分析使用定制舌侧矫治系统治疗的患者的骨骼、牙齿和软组织变化，并评估微螺钉支抗的临床效果。
本研究纳入了9例使用定制舌侧矫治器治疗的拔除上颌第一前磨牙的患者。使用微螺钉加强磨牙支抗。在治疗前（T1）、排齐后（T2）和治疗后（T3）获取头影测量片和研究模型。通过头影测量片和研究模型分析治疗效果。
在T2和T3时，上前牙显著内收（分别为4.41±4.14mm和5.51±2.48mm）。在间隙关闭过程中，上颌第一磨牙有轻微的近中移动（1.50±1.97mm）。上颌牙弓的尖牙间宽度在T2时增加（1.59±1.81mm），但在T3时减小（0.11±1.00mm）。在T3时，蝶鞍-鼻根点-A、鼻根点-A-鼻根点-B和下颌平面角无显著变化。上唇在T2和T3时均持续后缩（分别为1.40±1.46mm和2.32±2.48mm）。
通过在舌侧正畸中使用微螺钉支抗，患者的牙齿和软组织变化得到了显著改善，磨牙支抗得到了加强。
