短纤维复合基对后牙修复体微渗漏及承载能力的影响。

Acta Biomaterialia Odontologica Scandinavica Pub Date : 2015-04-14 eCollection Date: 2015-01-01 DOI:10.3109/23337931.2015.1017576
Sufyan K Garoushi, Marwa Hatem, Lippo V J Lassila, Pekka K Vallittu
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引用次数: 55

摘要

目的:测定不同复合基材制作的II类修复体的边际微渗漏及直接复合贴体修复体的静承载能力。方法:对40颗拔除的磨牙进行II类空腔制备。根据使用的复合基础材料(everX Posterior, SDR, Tetric EvoFlow),将其分为五组(n = 8/组)。II类修复完成后,标本中矢状面切片。每组切片修复体浸泡在染料中。在立体显微镜下观察标本,计算空腔渗漏率。制作10组修复体(n = 8/组);组由复合基础材料(everX Posterior, SDR, Tetric EvoFlow, Gradia Direct LoFlo)制成,并覆盖1 mm的常规(Tetric N-Ceram)或填充(Tetric EvoCeram bulk fill)复合材料。仅由常规、散装填充和短纤维复合材料制成的组作为对照。试件静力加载直至断裂。数据采用方差分析(p = 0.05)。结果:普通复合材料修复体和短纤维复合材料修复体的微渗漏值与其他组相比有统计学意义(p < 0.05)。方差分析显示,以短纤维增强复合材料(FRC)为基础或平原修复体的嵌体修复体的承载能力(1593 N)显著高于其他修复体(p < 0.05)。结论:短FRC基面与常规复合材料面层复合修复体在微渗漏和承载能力方面表现良好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The effect of short fiber composite base on microleakage and load-bearing capacity of posterior restorations.

The effect of short fiber composite base on microleakage and load-bearing capacity of posterior restorations.

The effect of short fiber composite base on microleakage and load-bearing capacity of posterior restorations.

The effect of short fiber composite base on microleakage and load-bearing capacity of posterior restorations.

Objectives: To determine the marginal microleakage of Class II restorations made with different composite base materials and the static load-bearing capacity of direct composite onlay restorations. Methods: Class II cavities were prepared in 40 extracted molars. They were divided into five groups (n = 8/group) depending on composite base material used (everX Posterior, SDR, Tetric EvoFlow). After Class II restorations were completed, specimens were sectioned mid-sagitally. For each group, sectioned restorations were immersed in dye. Specimens were viewed under a stereo-microscope and the percentage of cavity leakage was calculated. Ten groups of onlay restorations were fabricated (n = 8/group); groups were made with composite base materials (everX Posterior, SDR, Tetric EvoFlow, Gradia Direct LoFlo) and covered by 1 mm layer of conventional (Tetric N-Ceram) or bulk fill (Tetric EvoCeram Bulk Fill) composites. Groups made only from conventional, bulk fill and short fiber composites were used as control. Specimens were statically loaded until fracture. Data were analyzed using ANOVA (p = 0.05). Results: Microleakage of restorations made of plain conventional composite or short fiber composite base material showed statistically (p < 0.05) lower values compared to other groups. ANOVA revealed that onlay restorations made from short fiber-reinforced composite (FRC) as base or plain restoration had statistically significant higher load-bearing capacity (1593 N) (p < 0.05) than other restorations. Conclusion: Restorations combining base of short FRC and surface layer of conventional composite displayed promising performance related to microleakage and load-bearing capacity.

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