在暴露于人造唾液后,直接打印和热成型的透明对齐器的真实性和精度:一个比较的体外研究研究
Claire-Adeline Dantagnan1, Clara Salem2, Carole Charavet3
1UMR 1333 Oral Health Laboratory, National Institute of Health and Medical Research (Institut national de la santé et de la recherche médicale), Paris City University, Sorbonne University Paris North, Montrouge, France; Orthodontic Department, Paris City University, Montrouge, France; Pitié-Salpêtrière Hospital, boulevard de l'Hôpital, Paris, France.
概括
与热成型对齐器相比,直接打印的对齐器显示出更高的真实性和精度,即使在人工唾液 (AS) 老化后. 对两种类型的AS暴露降低了准确性,但打印对齐器保持了更好的性能.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料科学 牙科材料科学
- ортодонтическая技术 ортодонтическая 技术 ортодонтическая 技术
背景情况:
- 人工唾液 (AS) 对牙调整器精度的老化影响对治疗结果至关重要.
- 在模拟口腔条件下比较直接打印与传统热成型对齐器的尺寸稳定性至关重要.
研究的目的:
- 评估和比较直接打印对齐器的真实性和精度与热成型对齐器在人工唾液中老化后.
- 评估材料类型和老化时间对调整器尺寸精度的影响.
主要方法:
- 从同一个数字文件制造出四种类型的对齐器:3D打印 (TC-85DAC,Clear A,OD Clear TF) 和热成型 (Duran Plus).
- 样品在37°C的人工唾液中经历了24小时,7天和14天的老化.
- 使用3D扫描和CloudCompare软件通过将扫描模型与原始数字设计或在组内相互比较来量化真实性和精度.
主要成果:
- 与热成型的Duran Plus对齐器相比,直接打印的对齐器表现出明显更高的真实性和精度.
- 人工唾液老化显著降低了所有测试的对齐器类型的真实性和精度.
- 材料类型是影响对齐器精度的重要因素,印刷树脂的性能优于热成型材料.
结论:
- 直接打印的对齐器在体外环境中显示出比热成型的对齐器更高的尺寸精度 (真实性和精度).
- 人工唾液的老化会对直接打印和热成型对齐器的准确性产生负面影响.
- 需要进一步的临床验证,以确认直接打印对齐器在正牙治疗中的长期行为和疗效.
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