Department of Orthodontics and Dentofacial orthopedics, KLE Society's Institute of Dental Sciences, Yeshwanthpur Suburb, Bengaluru, Karnataka, India, pin: 560022.
J Orofac Orthop. 2022 Mar;83(2):87-98. doi: 10.1007/s00056-021-00297-z. Epub 2021 May 7.
Primary objective of the study is to quantify and evaluate the skeletal and dental contributions during sagittal Class II correction with the Forsus™ fatigue resistant device (FRD; 3M Unitek Corp., Monrovia, CA, USA). Secondary objective is to evaluate the overall vertical, soft tissue and chin-throat relation changes with the Forsus™ appliance.
A retrospective sample of 27 Class II patients treated with the Forsus™ FRD appliance was compared to 20 untreated control subjects who were matched according to age and craniofacial morphology. Pre-Forsus™ (T0) and Post-Forsus™ (T1) cephalograms were subjected to composite cephalometric analysis. Growth changes were subtracted from the treatment changes to obtain the treatment effects of the appliance. The data were analyzed using Student's t‑test and independent t test.
Significant differences were found between the treated and the control group in 16 of 29 measured variables. The overjet and molar relation improved by 4.23 mm and 4.49 mm, respectively. This was mainly achieved by backward movement of maxillary incisors (1.4 mm) and molars (1.22 mm) and forward movement of mandibular incisors (2.26 mm) and molars (2.70 mm). Overbite decreased by 2.24 mm with no changes in mandibular and nasal plane angles.
The Forsus™ FRD was effective in correcting Class II malocclusion mainly at the dentoalveolar level. The net skeletal and dentoalveolar contributions towards both overjet and molar correction was 13% and 87%, respectively. The improvement in soft tissue profile and chin-throat configuration was statistically insignificant.
本研究的主要目的是量化和评估 Forsus™疲劳阻力装置（FRD；3M Unitek 公司，美国蒙罗维亚）在矢状位 II 类矫正中的骨骼和牙齿贡献。次要目的是评估 Forsus™器具的整体垂直、软组织和颏-咽关系变化。
将 27 例接受 Forsus™ FRD 矫治器治疗的 II 类错患者的回顾性样本与 20 例未经治疗的对照者进行比较，这些对照者是根据年龄和颅面形态匹配的。在 Forsus™之前（T0）和之后（T1）的头颅侧位片上进行综合头影测量分析。将生长变化从治疗变化中减去以获得矫治器的治疗效果。使用学生 t 检验和独立 t 检验对数据进行分析。
在 29 个测量变量中，治疗组和对照组有 16 个变量存在显著差异。覆盖和磨牙关系分别改善了 4.23mm 和 4.49mm。这主要是通过上颌切牙（1.4mm）和磨牙（1.22mm）向后移动以及下颌切牙（2.26mm）和磨牙（2.70mm）向前移动来实现的。覆咬合减少了 2.24mm，而下颌和鼻平面角没有变化。
Forsus™ FRD 在矫正 II 类错畸形方面是有效的，主要作用于牙牙槽水平。对上颌切牙和磨牙的净骨骼和牙牙槽贡献分别为 13%和 87%。对软组织侧貌和颏-咽形态的改善没有统计学意义。
Zotero 插件