一个修改的透明双块器件用于治疗II类缺陷:一项随机临床试验
Anosh A Haik1, Yassir A Yassir2,3
1Baghdad Health Department, Rusafa, Ministry of Health, Baghdad 10045, Iraq.
European journal of orthodontics
|February 15, 2026
概括
由PETG制成的修改双块 (MTB) 器件有效治疗青少年的骨II类缺陷. 与传统的双块 (CTB) 器件相比,它提供了更好的过度减少和牙弧度扩张.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料工程 生物材料工程
背景情况:
- 骨II类缺陷经常用功能性器械治疗,但由于器械的体积和不适,患者的服从往往受到阻碍.
- 透明的热塑性材料在正牙器件中提供了改善舒适性和美学的潜力,但临床证据有限.
研究的目的:
- 为了评估一个修改双块 (MTB) 器件的临床有效性,由2毫米PETG热塑性材料制成.
- 为了将MTB设备与常规双块 (CTB) 设备进行比较,用于治疗由下逆转症引起的骨II类缺陷.
主要方法:
- 一个多中心,单盲随机临床试验,涉及50名处于青春期成长高峰期的青少年 (CS-3).
- 患者被随机分配,接受CTB或MTB设备,两者都配备了中线螺丝用于大扩张.
- 脑图和3D数字模型被用来评估骨,软组织和牙弧变化治疗前后. 用一个验证的问卷来评估患者的感知.
主要成果:
- 无论是CTB和MTB设备都显示了骨,软组织和牙参数的显著改善.
- 大型自行车组在ANB角度,超咬减少和牙弧扩张方面显示出统计学上显著的改善,特别是在牙区域.
- 患者感知数据表明,在舒适性,卫生性,功能性和心理社会影响方面,MTB设备的体验明显更为有利.
结论:
- 修改双块 (MTB) 器件是由于下逆转而导致骨II类缺陷的成长期患者的有效治疗方法.
- 大型自行车设备的效果与传统双块 (CTB) 设备的效果相比,具有一些有利的结果.
- 进一步的研究可能会探索优化热塑性功能设备的设计和应用.
相关概念视频
01:11Blinding
4.0K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
4.0K
01:20Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
271
Body:Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to...
271