使用Ribbond纤维增加MOD修复的断裂强度
Francesca Zotti1, Francesca Ferrari2, Corrado Paganelli3
1Researcher, PhD, Section of Dentistry and Maxillofacial Surgery, Department of Surgical Sciences, Pediatrics and Gynecology, University of Verona, P.le L.A. Scuro, 10, 37134 Verona, Italy.
Journal of clinical and experimental dentistry
|August 12, 2024
概括
在复合材料修复中,在3mm深度放置Ribbond纤维显著提高了牙的骨折抵抗力,而不是在腔层放置. 这一策略还减少了不可恢复的骨折,提高了整体修复的耐用性.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 人类牙中标准化的MOD腔被用于评估带丝纤维修复技术.
- 该研究侧重于没有轴间牙的腔,这是一个常见的临床情景.
研究的目的:
- 为了比较两个带丝纤维修复策略的断裂强度.
- 为了确定Ribbond Fiber在复合材料修复中最佳的放置深度,以提高抗断裂的性能.
主要方法:
- 三十四个人的牙被分为两个组,带丝纤维放置在腔体底部或距离闭合平面3mm.
- 修复使用了Estelite散装填充流通通用复合材料和Ceram.x Spectra ST.
- 牙经历了2000个热循环 (55°C/5°C) 在使用Instron设备评估骨折强度之前.
主要成果:
- 在两组之间观察到骨折强度的统计学上显著差异 (P<0.001).
- 2组 (3mm放置) 与1组 (833N,SD 248) 相比,显示出明显更高的平均断裂负荷 (1286N,SD 447).
- 第二组也显示了更高的可恢复骨折的百分比.
结论:
- 将Ribbond Fiber3mm从闭合平面放置在2mm复合层上,可以提高关键牙的骨折抵抗力.
- 这种放置策略可以降低不可恢复的骨折的风险,而不是将纤维放置在腔体底部.
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