用不同玻璃离子体水泥体积评估皇冠座椅的垂直差异:一个体外研究
Sandip Rajput1, Mahesh Gandhewar2, Sneha Raul1
1Department of Prosthodontics, Guru Gobind Singh College of Dental Sciences and Research Centre, Burhanpur, IND.
Cureus
|June 10, 2024
概括
应用玻璃离子体水泥通过内部刷毛将皇冠件的垂直边缘差异最小化. 这种方法提供了最佳的水泥容量,可以精确地放置皇冠和减少间隙.
科学领域:
- 牙科材料科学 牙科材料科学
- 牙修复 牙修复 牙修复 牙修复 牙修复
- 生物材料工程 生物材料工程
背景情况:
- 准确的皇冠位置对于长期的修复成功至关重要.
- 过多的水泥可能会导致边缘差异,影响皇冠的适应性和寿命.
- 了解水泥容量的影响是优化水泥加工程序的关键.
研究的目的:
- 为了评估不同玻璃离子体水泥体积的皇冠件的垂直差异.
- 确定最佳的水泥数量,以尽量减少冠状凝固过程中的边际差异.
主要方法:
- 60个- (Ni-Cr) 皇冠件根据水泥容量被分为三个组:完全填充,半填充和内部刷刷.
- 在凝固过程中施加了静态负荷,并使用立体显微镜和图像分析测量了垂直差异.
- 统计分析包括单向ANOVA和对对样本t测试来比较组.
主要成果:
- 内部刷水泥组表现出最少的平均垂直差异 (14.92±10.77μm).
- 这明显低于半填充 (28.42±12.45μm) 和完全填充 (58.50±20.91μm) 组 (P<0.05).
结论:
- 水泥体积是影响皇冠件垂直边缘差异的关键因素.
- 将玻璃离子体水泥刷在内部皇冠表面上会导致较小的接后垂直差异,表明一种优秀的技术.
相关概念视频
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Total voids in concrete encompass gel water volume, capillary pores, and entrapped air. Gel water (retained within the cement hydration products) and physically entrapped or adsorbed water are significant for the hydration process. For complete hydration, it's estimated that the space needed for the products of a cubic centimeter of cement doubles. Capillary pores constitute the unoccupied space within the hydrated cement paste, with their size largely influenced by the water-to-cement...
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