Dent Mater J:树脂复合物与高纤维的长宽比例对严重缺损牛切牙抗折性能的影响

2020-01-05 lishiting MedSci原创

这篇研究的目的是为了评估采用不同桩核和常规复合物(PFC, G-aenial Anterior)完成冠修复切牙的抗折性能。

这篇研究的目的是为了评估采用不同桩核和常规复合物(PFC, G-aenial Anterior)完成冠修复切牙的抗折性能。

研究采用40颗牛的切牙,切割后分为5组。组A采用纤维桩和Gradia核作桩核重建,并采用PFC冠修复。组B采用纤维桩和everX Flow核进行桩核重建,并采用PFC冠修复。组C采用everX Flow作为桩核,并采用PFC冠修复。组D采用CERASMART进行间接的桩核冠修复。组E采用Gradia核作为桩核,并采用PFC冠进行修复。修复牙齿静态负荷直至折裂。

ANOVA分析结果显示,修复技术显著影响修复牙齿的负荷能力(p<0.05)。在所有组中,组B的修复切牙具有最高的负荷能力(443 N)。采用everX Flow配以纤维桩作为核材料有望增强结构受损切牙的抗力。

原始出处:

Lassila L, Oksanen V, et al. The influence of resin composite with high fiber aspect ratio on fracture resistance of severely damaged bovine incisors. Dent Mater J. 2019 Dec 18. doi: 10.4012/dmj.2019-051.

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    2020-01-07 chenshujs
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