PDF(Pubmed)
Abstract：
The aim of the present in vitro study was to evaluate specific mechanical and physicochemical properties of three calcium silicate-based sealers, BioRoot™ Flow (BRF), CeraSeal (CRS) and TotalFill® (TF). Samples were prepared to evaluate different physicochemical and mechanical properties of the tested sealers. These evaluations were accomplished by investigating the pH changes over time, porosity, roughness, flow properties, compressive strength and wettability. The results were statistically evaluated using one-way analysis of variance. All three sealers demonstrated an alkaline pH from 1 h of immersion in water to 168 h. A higher porosity and hydrophily were detected in BRF samples compared to CRS and TF. No significant difference was found between the tested materials in the flow properties. Lower compressive strength values were observed for BRF compared to TF and CRS. Differently shaped structures were detected on the three materials after 7 days of immersion in PBS. The three materials demonstrated a higher solubility than 3% after 24 h of immersion in water (CRS < BRF < TF). The novel premixed calcium silicate sealer (BRF) had comparable physicochemical properties to the existing sealers. The lower compressive strength values could facilitate the removal of these materials during retreatment procedures. Further studies should investigate the biological effects of the novel sealer.
摘要：
本体外研究的目的是评估三种硅酸钙基密封剂的特定机械和物理化学性能，BioRoot™Flow(BRF),CeraSeal(CRS)和TotalFill®(TF)。制备样品以评价测试的密封剂的不同物理化学和机械性能。这些评估是通过调查pH随时间的变化来完成的，孔隙度,粗糙度,流动属性，抗压强度和润湿性。使用单向方差分析对结果进行统计学评估。从浸入水中1小时到168小时,所有三种密封剂都显示出碱性pH。与CRS和TF相比,在BRF样品中检测到更高的孔隙率和亲水性。在所测试的材料之间在流动性质上没有发现显著差异。与TF和CRS相比,BRF观察到更低的压缩强度值。在PBS中浸渍7天后,在三种材料上检测到不同形状的结构。三种材料在水中浸泡24小时后显示出比3%更高的溶解度(CRS
