Department of Endodontology, Faculty of Dentistry, Ege University, Izmir, Turkey.
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ege University, Izmir, Turkey.
Braz Dent J. 2021 Sep-Oct;32(5):1-11. doi: 10.1590/0103-6440202104638.
Root canal sealers should have optimum adhesion to the root dentin, low cytotoxicity, sufficient radiopacity and high dimensional stability, which depend mainly on their chemical composition. The aims of this study were to evaluate the chemical composition of Syntex (Cerkamed, Stalowa Wola, Poland), Adseal (Meta Biomed, Cheongju-si, Korea), Sealapex (SybronEndo, Scafati, Italy), MTA Fillapex (Angelus, Londrina, Brazil) and GuttaFlow Bioseal (Coltene/Whaledent, Altstätten, Switzerland) and to determine their radiopacity comparatively. Stainless steel molds with an inner diameter of 5 mm and a depth of 2 mm were constructed. Tested root-canal sealers were mixed and poured into the molds. Following setting, digital periapical radiographs of the specimens (n=12) were taken under standard exposure conditions and the mean gray-values of specimens were measured using a computer graphics program. Then the specimens were examined by scanning electron microscopy, and Energy-dispersive X-ray analysis was performed. The data were analyzed using One-way ANOVA followed by Holm-Sidak multi-comparison test (p = 0.05). Sealapex showed higher calcium peak than MTA Fillapex, GuttaFlow Bioseal, Adseal and Syntex sealers. MTA Fillapex contained a highest amount of tungstate. Sealapex presented the highest radiopacity value among the tested materials (p < 0.05), whereas MTA Fillapex was the least radiopaque material (p < 0.05). Each root canal sealer contains different compositions of radiopacifiers including bismuth oxide, calcium tungstate and zirconium oxide. The tested root canal sealers had radiopacity values above the ISO-specified limit. Sealapex was the most radiopaque root canal sealer followed by GuttaFlow Bioseal, Syntex, Adseal and MTA Fillapex.
根管封闭剂应与根管牙本质具有最佳的黏附性、低细胞毒性、足够的射线不透性和高尺寸稳定性，这主要取决于其化学成分。本研究的目的是评估 Syntex（Cerkamed，Stalowa Wola，波兰）、Adseal（Meta Biomed，Cheongju-si，韩国）、Sealapex（SybronEndo，Scafati，意大利）、MTA Fillapex（Angelus，Londrina，巴西）和 GuttaFlow Bioseal（Coltene/Whaledent，Altstätten，瑞士）的化学组成，并比较它们的射线不透性。构建了内径为 5mm、深度为 2mm 的不锈钢模具。将测试的根管封闭剂混合并倒入模具中。设置完成后，在标准曝光条件下对试件（n=12）进行数字根尖射线照相，并使用计算机图形程序测量试件的平均灰度值。然后使用扫描电子显微镜检查试件，并进行能量色散 X 射线分析。使用单因素方差分析，然后进行 Holm-Sidak 多重比较检验（p=0.05）分析数据。Sealapex 的钙峰高于 MTA Fillapex、GuttaFlow Bioseal、Adseal 和 Syntex 封闭剂。MTA Fillapex 含有最高量的钨酸盐。Sealapex 是所有测试材料中射线不透性最高的（p<0.05），而 MTA Fillapex 是射线不透性最低的材料（p<0.05）。每种根管封闭剂都含有不同成分的射线不透射物质，包括氧化铋、钨酸钙和氧化锆。测试的根管封闭剂的射线不透性值都高于 ISO 规定的限值。Sealapex 是射线不透性最高的根管封闭剂，其次是 GuttaFlow Bioseal、Syntex、Adseal 和 MTA Fillapex。
