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与热循环相关的假牙基树脂的机械和美学性能
Ha Eun Choi1, Sumin Kim2, Gi Youn Kim2
1Department and Research Institute of Dental Biomaterials and Bioengineering, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Republic of Korea.
Scientific reports
|November 19, 2025
概括
经过3D打印的假牙基树脂 (DBRs) 在老化后显示出与热聚合树脂相比的可比性结合和屈曲强度. 然而,3D打印的树脂表现出显著的颜色变化,限制了它们的美学耐用性.
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
- 牙科材料 牙科材料
背景情况:
- 假牙基树脂 (DBRs) 对于假牙至关重要.
- 评估新型DBR的机械性能和色彩稳定性对于临床成功至关重要.
- 3D打印树脂在定制和制造效率方面提供了潜在的优势.
研究的目的:
- 为了比较热聚合 (HEA),冷聚合 (COL) 和3D打印 (TDP) 假牙基树脂的剪接强度 (SBS),柔性强度和颜色稳定性.
- 评估热循环对这些特性的影响,模拟口腔环境中的衰老.
主要方法:
- 制造了三种类型的DBR (HEA,COL,TDP) 产品.
- 在将 COL 与每个 DBR 类型结合后,测试了切割键强度.
- 使用三点曲试验测量了曲强度.
- 在10,000个热循环前和之后,使用色度计评估了颜色稳定性.
主要成果:
- 在老化之前,TDP的SBS比HEA和COL低,但在热循环后变得可比.
- 在所有组中,热循环治疗显著降低了SBS.
- 热循环不影响HEA和COL的柔性强度,而TDP的柔性强度下降,但仍然高于HEA和COL.
- TDP显示颜色变化明显大于HEA和COL,超过了感知度值.
结论:
- 3D打印的假牙基质树脂在模拟老化后显示出与传统树脂相比的机械性能.
- 3D打印树脂的美学耐用性受到显著的颜色不稳定性影响.
- 需要进一步的研究来改善3D打印假牙基树脂的颜色稳定性,以便长期临床应用.
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