Özata Merve Yeniçeri, Falakaloğlu Seda, Plotino Gianluca, Adıgüzel Özkan
Department of Endodontics, Faculty of Dentistry, Dicle University, Diyarbakır, Turkey.
Department of Endodontics, Faculty of Dentistry, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey.
Aust Endod J. 2023 Apr;49(1):124-129. doi: 10.1111/aej.12631. Epub 2022 Jun 4.
This study aimed to compare in vitro micro-shear bond strength (μSBS) of three different endodontic tricalcium silicate-based materials in contact with a bulk-fill resin-based composite. Thirty cylindrical resin blocks with a hole in the centre (2 mm in depth and 4 mm in diameter) were manufactured with a 3D printer and divided into three groups (n = 10), depending on the calcium silicate cement used: light curing TheraCal LC (Bisco, Schaumburg, IL, USA), liquid-powder NeoMTA 2 (NuSmile Avalon Biomed, Bradenton, FL, USA) and putty NeoPutty (NuSmile, Houston, TX, USA). Each sample was stored for 24 h at 37°C and 100% humidity. Then, after adhesive placement, the restorative material Filtek bulk-fill (3 M ESPE, St. Paul, MN, USA) was placed over the capping material using cylindrical plastic capsules (2 mm height and 2 mm) and polymerised for 20 s. Specimens were then tested in a universal testing machine for the compression load resulting in the μSBS. The data were compared with the one-way ANOVA (Welch) and the Tamhane test. The mean value was significantly higher in the TheraCal LC group than in the other two groups (p < 0.05). There was no significant difference between NeoMTA 2 and NeoPutty groups (p > 0.05). The majority of failure modes for all groups were cohesive within biomaterial. Using TheraCal LC in the pulp capping procedure can result in higher bond strength values to the tested bulk-fill resin-based composite than NeoMTA 2 and NeoPutty.
本研究旨在比较三种不同的基于硅酸三钙的根管治疗材料与大块充填树脂基复合材料接触时的体外微剪切粘结强度（μSBS）。使用3D打印机制作了30个中心有孔（深度2毫米，直径4毫米）的圆柱形树脂块，并根据所使用的硅酸钙水泥分为三组（n = 10）：光固化TheraCal LC（美国伊利诺伊州绍姆堡市的Bisco公司）、液粉型NeoMTA 2（美国佛罗里达州布雷登顿市的NuSmile Avalon Biomed公司）和油灰型NeoPutty（美国得克萨斯州休斯顿市的NuSmile公司）。每个样品在37°C和100%湿度下储存24小时。然后，在放置粘结剂后，使用圆柱形塑料胶囊（高度2毫米，直径2毫米）将修复材料Filtek大块充填材料（美国明尼苏达州圣保罗市的3M ESPE公司）放置在盖髓材料上，并聚合20秒。然后在万能试验机上对试样进行测试，以获得μSBS的压缩载荷。数据采用单因素方差分析（韦尔奇法）和塔姆哈尼检验进行比较。TheraCal LC组的平均值显著高于其他两组（p < 0.05）。NeoMTA 2组和NeoPutty组之间没有显著差异（p > 0.05）。所有组的大多数失效模式均发生在生物材料内部。在盖髓过程中使用TheraCal LC比NeoMTA 2和NeoPutty能获得更高的与测试的大块充填树脂基复合材料的粘结强度值。
