Kizilirmak Burcu, Tunçdemİr Ali Rıza
Department of Prosthodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey.
Sci Rep. 2025 May 13;15(1):16648. doi: 10.1038/s41598-025-00542-0.
The purpose of this study was to compare the shear bond strength (SBS) of denture base resin (DBR) and dental materials produced by different methods and to investigate the effect of artificial gastric acid on bond strength. Heat-polymerized, subtractive (CAD/CAM-milled) and additive (3D printing) DBR-teeth combinations were investigated. 5 × 5 × 2 mm teeth, 10Ø, 2 mm high base samples were produced according to the manufacturer's instructions. The teeth specimens were bonded with the same type of DBR and immersed in artificial gastric acid solution. They were stored in an incubation device at 37 °C for 96 h. The SBS test was performed on a universal testing machine. Statistical analysis of the results was performed using ANOVA and Games-Howell (α = 0.05). The mean SBS was highest in the 3D printed group (15.08 ± 4.25 MPa). This was followed by heat-polymerized (12.90 ± 3.00 MPa ), then CAD/CAM-milled group (6.57 ± 2.01 MPa ). The manufacturing method significantly affected the SBS (P < 0.001), but artificial gastric acid did not significantly change the SBS of any group (P = 0.488). The 3D printed group showed the highest bond strength. 3D printing method can be used safely in patients with gastroesophageal reflux disease (GERD).
本研究的目的是比较通过不同方法生产的义齿基托树脂（DBR）与牙科材料的剪切粘结强度（SBS），并研究人工胃酸对粘结强度的影响。对热聚合、减法制造（CAD/CAM 铣削）和加法制造（3D 打印）的 DBR-牙齿组合进行了研究。按照制造商的说明制作了尺寸为 5×5×2 mm 的牙齿、直径 10Ø、高 2 mm 的基托样本。牙齿标本用同类型的 DBR 粘结，并浸入人工胃酸溶液中。将它们置于 37°C 的培养装置中保存 96 小时。在万能试验机上进行 SBS 测试。使用方差分析和 Games-Howell 检验（α = 0.05）对结果进行统计分析。3D 打印组的平均 SBS 最高（15.08±4.25 MPa）。其次是热聚合组（12.90±3.00 MPa），然后是 CAD/CAM 铣削组（6.57±2.01 MPa）。制造方法对 SBS 有显著影响（P < 0.001），但人工胃酸并未显著改变任何组的 SBS（P = 0.488）。3D 打印组显示出最高的粘结强度。3D 打印方法可安全用于胃食管反流病（GERD）患者。
