Sadighpour Leyla, Geramipanah Farideh, Ghasri Zahra, Neshatian Mehrnoosh
Dental Research Center, Dentistry Research Institute, Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Dental Implant Research Center, Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Restor Dent Endod. 2018 Sep 3;43(4):e40. doi: 10.5395/rde.2018.43.e40. eCollection 2018 Nov.
This study evaluated the microtensile bond strength (µTBS) of polymer-ceramic and indirect composite resin with 3 classes of resin cements.
Two computer-aided design/computer-aided manufacturing (CAD/CAM)-fabricated polymer-ceramics (Enamic [ENA; Vita] and Lava Ultimate [LAV; 3M ESPE]) and a laboratory indirect composite resin (Gradia [GRA; GC Corp.]) were equally divided into 6 groups ( = 18) with 3 classes of resin cements: Variolink N (VAR; Vivadent), RelyX U200 (RXU; 3M ESPE), and Panavia F2 (PAN; Kuraray). The μTBS values were compared between groups by 2-way analysis of variance and the Tamhane test ( = 0.05).
Restorative materials and resin cements significantly influenced µTBS ( < 0.05). In the GRA group, the highest μTBS was found with RXU (27.40 ± 5.39 N) and the lowest with VAR (13.54 ± 6.04 N) ( < 0.05). Similar trends were observed in the ENA group. In the LAV group, the highest μTBS was observed with VAR (27.45 ± 5.84 N) and the lowest with PAN (10.67 ± 4.37 N) ( < 0.05). PAN had comparable results to those of ENA and GRA, whereas the μTBS values were significantly lower with LAV ( = 0.001). The highest bond strength of RXU was found with GRA (27.40 ± 5.39 N, = 0.001). PAN showed the lowest µTBS with LAV (10.67 ± 4.37 N; < 0.001).
When applied according to the manufacturers' recommendations, the µTBS of polymer-ceramic CAD/CAM materials and indirect composites is influenced by the luting cements.
本研究评估了聚合物陶瓷和间接复合树脂与3类树脂水门汀的微拉伸粘结强度（µTBS）。
两种计算机辅助设计/计算机辅助制造（CAD/CAM）制作的聚合物陶瓷（Enamic[ENA；维他公司]和Lava Ultimate[LAV；3M ESPE公司]）以及一种实验室间接复合树脂（Gradia[GRA；GC公司]）被平均分为6组（每组n = 18），使用3类树脂水门汀：Variolink N（VAR；维他登公司）、RelyX U200（RXU；3M ESPE公司）和Panavia F2（PAN；可乐丽公司）。通过双向方差分析和Tamhane检验（α = 0.05）比较各组间的µTBS值。
修复材料和树脂水门汀对µTBS有显著影响（P < 0.05）。在GRA组中，RXU的µTBS最高（27.40±5.39 N），VAR的最低（13.54±6.04 N）（P < 0.05）。ENA组也观察到类似趋势。在LAV组中，VAR的µTBS最高（27.45±5.84 N），PAN的最低（10.67±4.37 N）（P < 0.05）。PAN与ENA和GRA的结果相当，而LAV的µTBS值显著较低（P = 0.001）。RXU与GRA的粘结强度最高（27.40±5.39 N，P = 0.001）。PAN与LAV的µTBS最低（10.67±4.37 N；P < 0.001）。
按照制造商的建议应用时，聚合物陶瓷CAD/CAM材料和间接复合材料的µTBS受粘结水门汀的影响。
