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首页> 外文期刊>Journal of Applied Oral Science >Morphological analysis of glass, carbon and glass/carbon fiber posts and bonding to self or dual-cured resin luting agents
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Morphological analysis of glass, carbon and glass/carbon fiber posts and bonding to self or dual-cured resin luting agents

机译：玻璃，碳纤维和玻璃/碳纤维桩的形态分析以及与自固化或双固化树脂浸润剂的粘合

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OBJECTIVE: The aim of this study was to evaluate the morphology of glass (GF), carbon (CF) and glass/carbon (G/CF) fiber posts and their bond strength to self or dual-cured resin luting agents. MATERIAL AND METHODS: Morphological analysis of each post type was conducted under scanning electron microscopy (SEM). Bond strength was evaluated by microtensile test after bisecting the posts and re-bonding the two halves with the luting agents. Data were subjected to two-way ANOVA and Tukey's test (α=0.05). Failure modes were evaluated under optical microscopy and SEM. RESULTS: GF presented wider fibers and higher amount of matrix than CF, and G/CF presented carbon fibers surrounded by glass fibers, and both involved by matrix. For CF and GF, the dual-cured material presented significantly higher (p<0.05) bond strength than the self-cured agent. For the dual agent, CF presented similar bond strength to GF (p>0.05), but higher than that of G/CF (p<0.05). For the self-cured agent, no significant differences (p>0.05) were detected, irrespective of the post type. For GF and G/CF, all failures were considered mixed, while a predominance of adhesive failures was detected for CF. CONCLUSION: The bonding between fiber posts and luting agents was affected by the type of fibers and polymerization mode of the cement. When no surface treatment of the post is performed, the bonding between glass fiber post and dual-cured agent seems to be more reliable.
机译：目的：本研究的目的是评估玻璃纤维（GF），碳纤维（CF）和玻璃/碳纤维（G / CF）的纤维形态以及它们与自固化或双固化树脂浸润剂的粘结强度。材料与方法：在扫描电子显微镜（SEM）下进行每种柱型的形态分析。在将支柱一分为二并用诱剂将两半重新粘合后，通过微拉伸试验评估其粘合强度。对数据进行双向ANOVA和Tukey检验（α= 0.05）。在光学显微镜和SEM下评估失效模式。结果：GF比CF呈现出更宽的纤维和更高的基质含量，G / CF呈现出碳纤维被玻璃纤维包围，并且都被基质所包围。对于CF和GF，双固化材料比自固化剂具有更高的粘合强度（p <0.05）。对于双重试剂，CF的粘合强度与GF相似（p> 0.05），但高于G / CF（p <0.05）。对于自固化剂，无论员额类型如何，均未检测到显着差异（p> 0.05）。对于GF和G / CF，所有故障都被认为是混合的，而CF的粘合故障占主导地位。结论：纤维种类和胶凝剂之间的结合受到纤维类型和水泥聚合方式的影响。当不进行柱的表面处理时，玻璃纤维柱和双固化剂之间的结合似乎更可靠。

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