3D打印临时皇冠的即时和长期拉出来的结合强度
Joyce R C Dos S Siqueira1, Rita M M Rodriguez1, Nathalia de C Ramos1
1Department of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, São José dos Campos 12245-000, Brazil.
BioMed research international
|September 12, 2024
概括
3D打印牙冠的粘合强度受到水泥类型和热老化的影响. 玻璃离子体水泥表现出最高的直接阻力,但所有水泥在热循环后都变弱,影响了临时恢复的寿命.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 牙修复 牙修复 牙修复 牙修复 牙修复
背景情况:
- 3D打印技术显著提升了牙科,特别是在创建临时修复方面.
- 评估临时水泥与3D打印材料的结合强度对于临床成功至关重要.
- 临时修复对于假肢康复的结果至关重要.
研究的目的:
- 评估3D打印牙冠的即时和长期结合强度,使用三种临时剂.
- 研究热老化对这些材料的结合强度的影响.
- 为了比较不同的临时水泥在粘合3D打印的冠子基板上的性能.
主要方法:
- 36个临时皇冠被3D打印,并使用3种不同的临时水泥 (Relyx Temp,Provicol,Meron) 将它们在牙类型上.
- 对标本进行了拉伸强度测试,其中一半接受了2000次热循环以模拟衰老.
- 使用有限元分析来评估结合接口中的应力分布.
主要成果:
- 水泥类型 (p = 0.006) 和热老化 (p = 0.001) 显著影响了结合强度.
- 玻璃离子体水泥表现出最高的即时键强度.
- 热老化对所有测试的临时水泥的结合强度产生了负面影响.
结论:
- 热老化显著损害了临时水泥和3D打印牙冠之间的结合强度.
- 玻璃离子水泥提供优越的立即阻力,但其长期稳定性也受到热应力的影响.
- 临床选择的临时水泥3D打印修复应考虑到环境老化的影响.
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