在两种不同的连接系统的四个植入物支持的整体修复中对假肢螺丝松动的评估
Samuel Sami Bekhit1, Ahmed M Abdelhamid2, Nayrouz Adel Metwally3
1Instructor, Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
The Journal of prosthetic dentistry
|July 6, 2023
概括
在四重复中,OT BRIDGE连接系统经历的假肢螺丝松比多单元支柱 (MUA) 更多. 然而,OT BRIDGE对周期性负载的影响较小,表明在动态条件下稳定性更好.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程是生物材料的工程.
- 牙修复 牙修复 牙修复 牙修复 牙修复
背景情况:
- OT BRIDGE连接系统为所有四个植入物修复提供了多单元支架 (MUA) 的替代方案.
- 在四重复修复中,OT BRIDGE和MUA之间的比较假肢螺丝松动需要进一步调查.
研究的目的:
- 为了比较OT BRIDGE附件的假肢螺丝松动与所有四个植入物支持的修复中的MUA.
- 在动态循环加载之前和之后,在两个连接系统中评估移除扭矩损失 (RTL).
主要方法:
- 在体外研究中,使用了一个没有牙的下模型,并根据四人四人概念放置了四个假体植入物.
- 十六个螺丝固定恢复被分为OT BRIDGE和MUA组,在动态循环负载前后测量了移除扭矩值 (RTV).
- 数据分析包括独立样本t测试,配对样本t测试和混合模型差异分析,以比较RTL比率.
主要成果:
- 与MUA相比,OT BRIDGE在前侧支架上装载前和装载后的RTL比率明显更高.
- 在前后两支支支架上,MUA在负载比率之前和之后的RTL差异显著更高.
- 在这两种系统中,后侧支柱在加载后显示出明显更高的RTL,与前侧支柱相比.
结论:
- 后部支柱在两个连接系统中比前部更容易松动假肢螺丝.
- 虽然OT BRIDGE显示了较高总螺丝松动的趋势,但与MUA相比,周期性负荷对其的影响较小.
- 在动态负载条件下,OT BRIDGE连接系统可以在四重重复中提供与MUA相比更好的稳定性.
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