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不同厚度和温度变化对3D DPA形状记忆行为的影响与热成型透明对齐材料相比:一个体外研究
Venkata Durga Mahendra Tivanani1, Swetha Reddy Dalli1, Praveen Kumar Varma Datla1
1Department of Orthodontics and Dentofacial orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.
International orthodontics
|October 4, 2025
概括
与PET-G相比,TA-28对齐器显示出优越的形状记忆,恢复速度更快,更广泛,特别是在体温下. 更薄的TA-28样本为正牙应用提供了更一致的力传递.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- ортодонтические对齐器对于牙纠正至关重要.
- 材料特性显著影响对齐器性能.
- 评估像TA-28这样的新材料对于推进对齐器技术至关重要.
研究的目的:
- 为了比较TA-28和PET-G材料的形状记忆行为,用于正牙对齐器.
- 为了研究材料厚度和温度对形状恢复的影响.
- 评估TA-28在改善正牙治疗结果方面的潜力.
主要方法:
- 两个材料,热成型PET-G (CA Pro) 和3D打印的TA-28,在0.5mm和0.75mm厚度中进行了测试.
- 制造了160条调整条,并在100°C时曲.
- 在30°C,37°C,40°C和80°C的温度下,在60分钟内测量了形状恢复.
主要成果:
- 在所有测试温度 (P≤0.001) 中,TA-28的形状回收率明显高于PET-G.
- 形状恢复随温度增加,在0.5mm的TA-28样本中观察到最佳性能.
- 在37°C时,TA-28的回收率高达60.7%,而PET-G的回收率变化很小;发现材料,厚度和温度 (P=0.005) 之间存在显著的相互作用.
结论:
- TA-28对齐器比PET-G具有优越的形状记忆性能,特别是在生理温度下.
- 0.5毫米的TA-28对齐器显示出更快,更完整的恢复,表明更一致的正力传递.
- 直接3D打印的TA-28对齐器有望提高治疗的可预测性,减少患者的不适,并提供持续的正牙力量.
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