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凝固协议对双层陶皇冠的断裂负载的影响,由快速层技术制造

Sarah Emille Gomes da Silva¹, Júlia M Costa Lima², Elen G Lima²

¹Federal University of Rio Grande do Norte(UFRN),Department of Dentistry,Natal,Brazil.

Brazilian dental journal

|September 25, 2024

概括

该研究发现,用氧化 (Al2O3) 对的空气磨损,然后用MDP树脂水泥进行凝固,显著改善了使用快速层技术 (RLT) 制成的双层陶冠的破裂负载. 这种方法提高了与土基础设施结合的地陶贴面的耐用性.

科学领域:

生物材料科学生物材料科学
牙科材料牙科材料
陶工程陶工程

背景情况:

双层陶冠,结合合金基结构与田地 Veneers,越来越多地用于修复牙科.
氧化和贴面陶之间的结合强度对于皇冠的长寿至关重要,这影响了断裂阻力.
快速层技术 (RLT) 是一种制造方法,用于创建这些复杂的牙科修复.

研究的目的:

为了评估使用快速层技术 (RLT) 制造的双层陶冠的断裂负荷.
为了比较不同的水泥化方案的有效性,用于粘合 feldspathic veneering 陶与基结构.
确定最佳的表面处理和凝固策略,以提高RLT制造的双层冠冕的机械完整性.

主要方法:

60个土基础设施和地冠由RLT制造,并根据凝固协议分为六组.
协议包括常规树脂水泥,Al2O3喷砂与或没有MDP树脂水泥,化和光泽处理.
样品经过机械循环,然后进行轴向压缩骨折负载测试,并使用ANOVA和韦布尔统计数据分析结果.

主要成果:

在各组中观察到骨折负荷的显著差异 (p<0.0001).
2O3喷砂,其次是MDP树脂水泥组表现出最高的断裂阻力 (1972.46 N).
在测试样本中观察到的主要故障模式是裂和破碎.

结论:

用Al2O3对体表面进行空气磨损,然后用MDP树脂水泥进行化,这是使用田地 Veneer 进行RLT双层陶冠的推方案.
这种特殊的表面处理和凝固策略显著提高了断裂负载和恢复的机械稳定性.
优化合金和贴面陶之间的接口对于RLT制造的牙假体的临床成功至关重要.

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