增加支柱螺丝长度是否可以为植入物带来生物机械优势,从而增加皇冠高度空间?
Mert Keleş1, Hamiyet Güngör Erdoğan2, Burak Yılmaz3,4,5
1Department of Periodontology, Lokman Hekim University, Ankara, Turkey.
概括
较长的支柱螺丝可以减少对牙植入物和骨的压力,尤其是更高的冠状. 这可以帮助预防植入物骨折和骨损失,牙科修复中的关键失败模式.
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
- 有限元分析 有限元分析
背景情况:
- 牙植入物对于牙置换至关重要.
- 了解植入物-支架复合体中的应力分布对于长期成功至关重要.
- 皇冠高度空间 (CHS) 和支柱螺丝长度是关键的设计考虑因素.
研究的目的:
- 为了研究螺丝长度和皇冠高度对植入物支柱复合体和周围骨内的应力的影响.
- 为了确定更长的支柱螺丝是否可以减轻由更大的皇冠高度空间 (CHS) 引起的增加应力.
主要方法:
- 创建了一个带有单个植入物的上前段的有限元素分析 (FEA) 模型.
- 模拟包括三个皇冠高度 (11,13,15毫米) 和两个支柱螺丝长度 (普通7.9毫米,长9.9毫米).
- 将水平和斜力应用于冠状,以评估应力分布.
主要成果:
- 皇冠高度的增加导致了支柱,螺丝和植入壁的更高的·米塞斯应力.
- 较长的支柱螺丝减少了对植入物壁的应力,但增加了支柱内部的应力.
- 带有最长螺丝 (M 15-L) 的最长皇冠高度在斜负荷下表现出最高的支柱应力.
结论:
- 支柱螺丝长度和皇冠高度都显著影响牙植入物组件中的应力产生.
- 使用较长的支柱螺丝可以减少对植入物和骨的压力,从而降低平台骨折和骨再吸收的风险.
- 更长的螺丝可能有助于管理与更高的皇冠相关的增加压力,在更大的皇冠高度空间 (CHS) 的情况下.
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