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使用不同的制剂设计和材料进行的内冠大修复的骨折强度
Rami S Al Fodeh1, Omer S Al-Johi1, Anas N Alibrahim1
1Department of Prosthodontics, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.
Journal of the mechanical behavior of biomedical materials
|October 15, 2023
概括
这项研究发现,在模拟老化后,各种内冠设计和材料 (二氧化玻璃陶和多层) 之间的断裂强度没有显著差异. 制剂的设计和材料类型并没有影响大前内冠的故障模式.
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:
- 内冠是一种保守的间接修复,用于内牙治疗的牙.
- 评估制剂设计和材料对内冠骨折强度的影响对于临床寿命至关重要.
- 热力学老化模拟长期的口腔条件,以评估材料的耐用性.
研究的目的:
- 为了研究制剂设计和材料类型对大前内冠骨折强度的影响.
- 为了在模拟的临床条件下比较脱酸盐玻璃陶和多层土内冠的性能.
- 分析与不同内冠设计和材料相关的故障模式.
主要方法:
- 80个经过内牙治疗的上前被恢复,具有十种不同的内冠配置 (材料和设计变化).
- 标本经历了1500个热循环和12万个循环,然后在45°处进行静态轴承负荷.
- 用双向ANOVA和Tukey的测试对故障模式进行了分类和分析.
主要成果:
- 断裂负荷范围从756 ± 150 N (二氧化玻璃陶,LE2) 到1334 ± 332 N (,ZC) 之间.
- 测试组之间没有观察到骨折负荷的统计学上显著差异 (p > 0.05).
- 准备设计或材料类型对故障模式分布没有显著的影响.
结论:
- 由脱酸玻璃陶和多层氧化制成的前内冠表现出相似的断裂强度和故障模式.
- 制剂设计和材料类型在模拟老化后不会显著影响内冠的机械性能.
- 临床选择内冠可以优先考虑材料类型和测试的特定制剂设计变异之外的因素.
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