Department of Restorative Dentistry, King Saudi University College of Dentistry.
Division of Operative Dentistry, Department of General Dentistry, The University of Tennessee Health Science Center College of Dentistry.
Dent Mater J. 2024 Jun 1;43(3):453-459. doi: 10.4012/dmj.2023-207. Epub 2024 May 1.
To evaluate the degree of conversion (DC), surface hardness (SH), and flexural strength (FS) of resin-based core build-up materials. Core build-up materials used were: MultiCore Flow (MCF); Activa (ACT); Core-X Flow (CXF); and everX flow (EVX), and DC, SH and FS were measured. An increase of DC was identified for all materials post-cure, except for EVX. The DC change percentage ranged from 5%-33%, and EVX was displayed the greatest DC rate. All materials displayed an SH increase after 30 days and the greatest increase was observed in ACT. At 1 h, the SH of EVX and CXF was different from the other materials. At 30 days, MCF displayed the greatest SH. All materials displayed an increase in their FS after 30 days except for EVX, and ranging 3%-36% were noticed. Differences observed between materials, thus clinician should be acquainted mechanical properties of these materials to ensure the success of the restorations.
评估树脂基核修复材料的转化率 (DC)、表面硬度 (SH) 和弯曲强度 (FS)。使用的核修复材料有：MultiCore Flow (MCF)、Activa (ACT)、Core-X Flow (CXF) 和 everX flow (EVX)，并测量了 DC、SH 和 FS。除了 EVX 之外，所有材料在固化后都表现出转化率的增加。转化率变化百分比范围为 5%-33%，EVX 显示出最大的转化率。所有材料在 30 天后显示出 SH 的增加，ACT 观察到最大的增加。在 1 小时时，EVX 和 CXF 的 SH 与其他材料不同。在 30 天时，MCF 显示出最大的 SH。除了 EVX，所有材料在 30 天后都显示出弯曲强度的增加，范围为 3%-36%。观察到材料之间的差异，因此临床医生应该了解这些材料的机械性能，以确保修复的成功。
