Bitter Kerstin, Schubert Anne, Neumann Konrad, Blunck Uwe, Sterzenbach Guido, Rüttermann Stefan
Department of Operative and Preventive Dentistry, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
Clin Oral Investig. 2016 Jul;20(6):1337-45. doi: 10.1007/s00784-015-1623-0. Epub 2015 Oct 8.
The aim of the present study was to test a self-adhesive resin cement used as core build-up material in comparison to two commercially available core build-up materials.
Forty human anterior teeth were endodontically treated and fiber post insertion (RelyX Fiber posts) and core build-ups were performed using two core build-up materials applied with an etch-and-rinse adhesive approach (Luxacore Dual-LC and Clearfil Core-CC) and an experimental self-adhesive resin cement (SAR) in two application modes (SAR Handmix and SAR Automix). Samples were subjected to thermo-mechanical loading. Margin integrity was determined using scanning electron microscopy (SEM), and maximum load capability (Fmax) was evaluated. Physical properties of the tested materials were also examined.
Fmax was significantly affected by the core build-up material (p < 0.0005; one-way ANOVA). CC [481 (158) N] revealed significantly higher Fmax compared to LC [226 (80) N], SAR Hand [205 (115), and SAR Automix [197 (134) N] (p < 0.05; Tukey-B). The percentage of margin quality "continuous margin" in enamel after thermo-mechanical loading (TML) differed significantly among groups (p < 0.0005; Kruskal-Wallis); CC demonstrated a significantly higher percentage of margin quality "continuous margin" compared to the other groups. Physical properties were significantly affected by the different core materials (p < 0.0005; ANOVA); CC and LC demonstrated significantly higher flexural strength compared to both SAR groups as well as significantly higher water sorption of both SAR groups compared to CC and LC.
Within the limitations of the present in vitro study, we conclude that the investigated experimental self-adhesive resin cement is not suitable as a core build-up material due to the lower maximum load capability, low margin quality, and the data of the mechanical properties.
The investigated experimental self-adhesive resin cement cannot be recommended as a core build-up material.
本研究旨在测试一种用作核桩修复材料的自粘接树脂水门汀，并与两种市售核桩修复材料进行比较。
选取40颗人上前牙进行根管治疗，使用两种采用酸蚀冲洗粘接法的核桩修复材料（Luxacore Dual-LC和Clearfil Core-CC）以及一种实验性自粘接树脂水门汀（SAR），以两种应用模式（SAR手工混合和SAR自动混合）进行纤维桩插入（RelyX Fiber桩）和核桩修复。对样本进行热机械加载。使用扫描电子显微镜（SEM）确定边缘完整性，并评估最大负载能力（Fmax）。还检测了受试材料的物理性能。
核桩修复材料对Fmax有显著影响（p < 0.0005；单因素方差分析）。与LC [226（80）N]、SAR手工混合组[205（115）N]和SAR自动混合组[197（134）N]相比，CC组[481（158）N]的Fmax显著更高（p < 0.05；Tukey-B检验）。热机械加载（TML）后，各组牙釉质边缘质量“连续边缘”的百分比存在显著差异（p < 0.0005；Kruskal-Wallis检验）；与其他组相比，CC组边缘质量“连续边缘”的百分比显著更高。不同核材料对物理性能有显著影响（p < 0.0005；方差分析）；与两个SAR组相比，CC组和LC组的弯曲强度显著更高，与CC组和LC组相比，两个SAR组的吸水率显著更高。
在本体外研究的局限性范围内，我们得出结论，由于最大负载能力较低以及边缘质量和机械性能数据不佳，所研究的实验性自粘接树脂水门汀不适合作核桩修复材料。
所研究的实验性自粘接树脂水门汀不能推荐用作核桩修复材料。
