支柱螺丝紧固方法对螺丝关节的影响:即时和长期稳定性
Manlin Sun1, Yusen Shui1, Yuqiang Zhang1
1State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases and Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
International journal of dentistry
|January 24, 2024
概括
一种新的螺丝紧固方法 (松动和立即回收) 显著提高了牙科植入物螺丝关节的稳定性. 与单次拉紧相比,这种技术提供了更好的即时和长期稳定性,使其在临床上具有优势.
科学领域:
- 生物材料科学 生物材料科学
- 牙科植入物学 牙科植入物学
- 机械工程 机械工程
背景情况:
- 牙植入物螺杆关节的稳定性对于成功的骨整合和长期假肢功能至关重要.
- 存在各种螺丝紧固协议,但它们对关节稳定性的影响需要进一步研究.
研究的目的:
- 评估不同螺丝拉紧方法对牙科植入物螺丝关节即时和长期稳定性的影响.
- 为了比较三种不同的紧固协议的机械稳定性和效率.
主要方法:
- 来自三个系统的150个植入物经历了三个拉紧方法:A (扭矩+10分钟回转),B (扭矩,松动,即时回转) 和C (单个扭矩).
- 在动态负载 (20-200N为10^5周期) 后测量了即时移除扭矩 (IRT) 和后加载移除扭矩 (PRT).
- 通过扫描电子显微镜 (SEM) 分析了操作时间和螺丝面地形.
主要成果:
- 与C方法相比,A和B方法的IRT (6.28%-21.58%) 和PRT (11.77%-44.87%) 显著更高.
- 方法B证明了与方法A相比的长期稳定性,但运行时间缩短.
- 所有后装载组都在SEM下显示了螺丝线的结构完整性的破坏.
结论:
- "扭矩,松动,即时回转"方法 (方法B) 显著提高了牙科植入物螺杆关节的即时和长期稳定性.
- 方法B比单次拉紧 (方法C) 提供更高的稳定性,并且与延迟拉紧 (方法A) 同样有效,时间效率更高.
- 这种方法被推用于临床应用,因为它有效地提高了螺杆关节的稳定性和减少了手术时间.
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