评估由Memory Titanol®弹产生的力系统,具有不同的预激活曲
Henrique Barcelos Brandão1, Jonas Bianchi1, Lucas Arrais de Campos1
1São Paulo State University, School of Dentistry, Department of Morphology and Child Clinic - Orthodontics (Araraquara/SP, Brazil).
Dental press journal of orthodontics
|October 9, 2024
概括
在Memory Titanol®弹 (MTS) 中不同的预激活曲会产生不同的力. 第三组 (60o) 产生了侵入性体力,而第一组和第二组 (0o和45o) 产生了挤出力和侵入性前体力.
科学领域:
- ортодонтика和牙科生物材料
- 牙科中的生物机械工程
- 材料科学在正牙器械中的材料科学
背景情况:
- 记忆Titanol®弹 (MTS) 是一种基于- (NiTi) 的正牙器件.
- 了解MTS产生的力量系统与不同的预激活对于可预测的牙运动至关重要.
- 以前的研究还没有完全阐明特定预激活角度对MTS的生物力学影响.
研究的目的:
- 为了评估Memory Titanol®弹 (MTS) 产生的生物力系统,使用不同的预激活角度.
- 在不同的MTS激活下,量化对牙和前牙的垂直力和时刻.
- 提供数据,以优化使用MTS. orthodontic治疗计划.
主要方法:
- 在MTS上测试了三种预激活角度 (0o,45o,60o),使用正牙力测试仪 (OFT).
- 激活应用于一个0.018 × 0.025-in NiTi 段,后部激活为30o (β).
- 对每个群体 (G1,G2,G3) 测量和分析了和前部分的力和时刻.
主要成果:
- 摩拉垂直力在G1的范围为-1.33 N (挤出) 到G3.3的范围为0.33 N (入侵).
- 在G1 (-1.34 N) 和G2 (-0.77 N) 中,前力是侵入性的,在G3 (0.31 N) 中是挤出性的.
- 牙直立时刻在G1 (53.45 N.mm) 和G2 (19.87 N.mm) 中是远端的,在G3 (-6.23 N.mm) 中是 mesial 的.
结论:
- 预激活角度显著影响MTS的力系统.
- 60o的预激活 (G3) 会导致侵入性体力和远端前体时刻.
- 0o和45o的预激活 (G1,G2) 产生具有远距离时刻的挤出性体力和侵入性前体力.
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