拉紧协议对支柱螺丝松动和两片石植入物的形态变化的影响:使用循环扭力负荷的比较研究
Toma Hara1, Takayuki Sugiki2, Munetsugu Seto2
1Functional Occlusal Treatment, Department of Crown and Bridge Prosthodontics, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan.
Journal of prosthodontic research
|January 7, 2026
概括
在牙科植入物中,支柱螺丝的重新紧固并没有持续地改善扭矩维护. 植入物在循环负荷后显示出比植入物更大的稳定性和更少的变形.
科学领域:
- 牙科植入物学 牙科植入物学
- 生物材料科学 生物材料科学
- 机械工程 机械工程
背景情况:
- 两件式的牙植入物被广泛使用.
- 支柱螺丝的稳定性对于长期的植入成功至关重要.
- 了解材料和协议对螺丝松动的影响至关重要.
研究的目的:
- 为了评估不同的支柱螺丝拉紧协议如何影响螺丝松动.
- 评估植入物材料 (与) 对螺丝稳定性的影响.
- 为了研究在循环扭力负荷下,两件植入物的形态变化.
主要方法:
- 和的两件植入物经历了循环扭转负荷 (100,000 个周期).
- 测试了三个支柱螺丝紧固协议:立即重新紧固,5分钟后重新紧固,没有重新紧固.
- 分析了移除扭矩,扭矩损失,表面形态 (SEM) 和维度变化 (RMS).
主要成果:
- 在所有协议中,植入物表现出比植入物更高的移除扭矩值 (RT-post).
- 支柱螺丝重新紧固协议并没有持续改善扭矩维护.
- SEM显示了螺丝头和线程的磨损;石植入物显示了较低的维度变化 (RMS).
结论:
- 植入物材料显著影响扭矩保留和变形阻力.
- 与植入物相比,植入物在扭转负荷下提供了更大的稳定性.
- 支柱螺丝重新紧固协议可能不是一种可靠的方法来增强长期螺丝稳定性.
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