Characterization of set Intermediate Restorative Material, Biodentine, Bioaggregate and a prototype calcium silicate cement for use as root-end filling materials
Characterization of set Intermediate Restorative Material, Biodentine, Bioaggregate and a prototype calcium silicate cement for use as root-end filling materials
复制标题
DOI：
10.1111/iej.12039
复制
发表时间：
2013-07-01
影响因子：
5
通讯作者：
Camilleri, J.
中科院分区：
文献类型：
--
作者：
Grech, L.;Mallia, B.;Camilleri, J.
目的研究由硅酸三钙和不透射线剂组成的水合原型骨水泥的材料和浸出液的组成，并将其与其他硅酸三钙基骨水泥（Biodentine和Bioaggregate）进行比较，以评估专有品牌骨水泥中的添加剂是否影响材料的水合作用，使用中间修复材料（Intermediate Restorative Material，简称MERS），一种标准根端填充材料作为对照。方法研究的材料包括原型-不透射线的硅酸三钙水泥、生物牙本质、生物骨料和中间修复材料（Bioaggregate）。对渗滤液的pH值和钙离子浓度进行了研究。采用扫描电子显微镜（SEM）、X射线能谱仪（EDX）、X射线衍射仪（XRD）和傅里叶变换红外光谱仪（FT-IR）对水泥水化产物进行了表征。结果所有骨水泥均为碱性。硅酸三钙基水泥在溶液中浸出钙。原型-不透射线硅酸三钙骨水泥、Biodentine和Biogastric的扫描电子显微镜显示水合骨水泥颗粒，被由硅酸钙水合物和氢氧化钙组成的基质包围。氢氧化钙的存在从XRD图中是明显的。FT-IR表明存在结晶性差的硅酸钙水合物。生物牙本质显示存在碳酸钙。生物聚集体掺入含磷酸盐相。氧化锌是一种分散在有机基质中的氧化锌。结论原型不透射线硅酸三钙骨水泥、Biodentine和Bioaggregate的水化导致水合硅酸钙和氢氧化钙的形成，并在溶液中浸出。水合材料由富含钙和硅的水泥相和不透射线材料组成。Biodentine包括碳酸钙，Biocaggregate包括粉末中的二氧化硅和磷酸钙。氧化锌是由分散在有机材料基质中的氧化锌组成的。
Aim To investigate the composition of materials and leachate of a hydrated prototype cement composed of tricalcium silicate and radiopacifier and compare this to other tricalcium silicate-based cements (Biodentine and Bioaggregate) to assess whether the additives in the proprietary brand cements affect the hydration of the materials, using Intermediate Restorative Material (IRM), a standard root-end filling material as a control. Methodology The materials investigated included a prototype-radiopacified tricalcium silicate cement, Biodentine, Bioaggregate and Intermediate Restorative Material (IRM). The pH and calcium ion concentration of the leachate were investigated. The hydrated cements were characterized using scanning electron microscopy (SEM) and X-ray energy dispersive analysis (EDX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Results All the cements tested were alkaline. The tricalcium silicate-based cements leached calcium in solution. Scanning electron microscopy of the prototype-radiopacified tricalcium silicate cement, Biodentine and Bioaggregate displayed hydrating cement grains, surrounded by a matrix composed of calcium silicate hydrate and calcium hydroxide. The presence of calcium hydroxide was evident from the XRD plots. FT-IR indicated the occurrence of a poorly crystalline calcium silicate hydrate. Biodentine displayed the presence of calcium carbonate. Bioaggregate incorporated a phosphate-containing phase. IRM consisted of zinc oxide interspersed in an organic matrix. Conclusions The hydration of prototype-radiopacified tricalcium silicate cement, Biodentine and Bioaggregate resulted in the formation of calcium silicate hydrate and calcium hydroxide, which was leached in solution. The hydrated materials were composed of a cementitous phase that was rich in calcium and silicon and a radiopacifying material. Biodentine included calcium carbonate, and Bioaggregate included silica and calcium phosphate in the powders. IRM was composed of zinc oxide interspersed in a matrix of organic material.