压力分布在短植入物上,冠高不同 - 一个体外研究
Annapoorni Hariharan1, A Krithika1, K Thanya1
1Department of Prosthodontics and Crown and Bridge, Meenakshi Ammal Dental College and Hospital, Maduravoyal, Chennai, Tamil Nadu, India.
Journal of pharmacy & bioallied sciences
|June 17, 2024
概括
在短牙植入物上,冠状高度的变化在轴承负载下不会显著影响骨压力. 斜负荷显示较长的冠状带有更高的应力,但骨功能衰竭和骨整合问题不太可能.
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
- 生物力学 生物力学
背景情况:
- 短牙植入物用于避免骨增强手术.
- 皇冠高度的变化可以影响植入物支持的修复中应力分布.
研究的目的:
- 为了分析短植入物中应力分布,具有不同的皇冠高度比率.
- 为了评估轴和斜负荷对植入物-骨接口应力的影响.
主要方法:
- 在下骨模型中的短植入物 (Bicon) 的三维有限元素分析 (FEA).
- 模拟植入物-皇冠比率为1:1:5,1:2:5和1:3 (B1,B2,B3) 的模型.
- 轴向 (600N) 和斜向 (225N) 负荷的应用,在植入物骨接口的应力评估使用·米塞斯等效应力.
主要成果:
- 轴负荷显示,在不同的冠状高度中,骨或植入物应力没有显著差异.
- 斜负荷导致尖顶骨,支柱骨和冠冕的应力更高,冠冕比率最长 (B3).
- 单向ANOVA显示了冠状应力在统计学上显著的差异,但不是在轴承负载下的骨头或植入物部件.
结论:
- 短植入物中皇冠高度变异在轴承负载下不会显著影响骨压力.
- 斜加载需要仔细考虑皇冠高度,以尽量减少应力度.
- 该研究表明,由于短植入物的冠状高度变化,骨微骨折或骨整合失败的可能性很低.
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