纤维外套对可调后台系统的推出键强度的影响
Eren Var1, Cihan Küden2, Oguz Yoldas1
1Department of Endodontics, Faculty of Dentistry, Cukurova University, Adana, 01380, Turkey.
BMC oral health
|October 22, 2025
概括
纤维外套显著提高后部和核心的修复.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料工程 生物材料工程
背景情况:
- 后和核心修复对于恢复内牙治疗的牙至关重要.
- 纤维柱比金属柱具有优势,但它们的结合强度可能受到各种因素的影响.
- 纤维外套在增强粘合强度方面的作用需要进一步研究.
研究的目的:
- 为了评估纤维外套对纤维柱的推出键强度 (PBS) 的影响.
- 为了评估老化的影响,通过模拟,在带和没有袖子的纤维柱的PBS上.
- 为了比较恢复牙的结合强度和失败模式,有和没有纤维袖子.
主要方法:
- 60个下前被分为四个组:纤维袖带杆 (S),纤维袖带杆老化后 (S_MS),只有杆 (P),只有杆老化后 (P_MS).
- 模拟老化使用一个模拟器 (50N负荷,240,000循环).
- 推出键的强度在冠状,中间和顶端三分之一的1mm切片上进行了测试,并分析了故障模式.
主要成果:
- 带有纤维袖子的牙 (S组) 与没有袖子的牙 (P组) 相比,PBS显著增加.
- 老龄化显著降低了带有纤维袖的组中的PBS (S与S_MS).
- 观察到的主要故障模式是牙和水泥之间的粘合性故障.
结论:
- 纤维外套显著提高了纤维柱的推出键强度.
- 纤维外套对粘合强度的有益作用在模拟老化后会减弱.
- 这些发现表明,虽然纤维外套增强了初始键强度,但在闭塞负荷下,它们的长期稳定性需要考虑.
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