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Abstract：
The aim of this study was to use polyetheretherketone (PEEK) for the post material and evaluate the fracture load of six restoration patterns in teeth with flared root canals; composite resin core alone (Group R); glass fiber sleeve (Group S); PEEK post (Group P); glass fiber post (Group F); PEEK post in glass fiber sleeve (Group PS); glass fiber post in glass fiber sleeve (Group FS). In this study, cylindroid specimens were prepared and underwent three-point-bending test in a steady condition and after water immersion. In the loading test, the materials in clinical conditions using bovine teeth were evaluated. In the bending test, groups using glass fiber posts and sleeves decreased in strength after water immersion. In the loading test, Groups F, FS and PS showed higher fracture load than other groups. This study showed PEEK posts and glass fiber sleeves are recommended in the case of flared root canals.
摘要：
这项研究的目的是使用聚醚醚酮（PEEK）作为桩材料，并评估具有扩口根管的牙齿中六种修复方式的断裂载荷；单独的复合树脂芯（R组）；玻璃纤维套管（S组）；PEEK桩（P组）；玻璃纤维桩（F组）；玻璃纤维套管中的PEEK桩（PS组）；玻璃纤维套管中的玻璃纤维桩（FS组）。在这项研究中,制备圆柱形样品，并在稳定条件下和浸水后进行三点弯曲测试。在加载测试中，使用牛牙对临床条件下的材料进行了评估。在弯曲试验中,浸水后，使用玻璃纤维柱和套管的组的强度降低。在加载测试中，F组,FS和PS显示较其他组更高的断裂负荷。这项研究表明，在扩口根管的情况下，建议使用PEEK柱和玻璃纤维套管。
