Nueesch Reto, Märtin Sabrina, Rohr Nadja, Fischer Jens
Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, 4058 Basel, Switzerland.
Materials (Basel). 2021 Aug 4;14(16):4361. doi: 10.3390/ma14164361.
The objective of this study was to evaluate the fracture load and retention force of different bonding systems while restoring one-piece zirconia implants with a novel cementation approach using a mesostructure. Polymer-infiltrated ceramic mesostructures ( = 112) were therefore designed as caps on the implant abutment, and a molar feldspathic ceramic crown was constructed on top of it as a suprastructure. For cementation, different bonding systems were used. Fracture load and retention force were measured immediately after storage in water at 37 °C for 24 h ( = 8) as well as after artificial aging in a chewing simulator and subsequent thermal cycling ( = 8). Combined restorations showed higher fracture load compared to monolithic restorations of polymer-infiltrated ceramic ( = 8) or feldspathic ceramic ( = 8) identical in shape. However, the fracture load of the combined restorations was significantly affected by aging, independent of the primers and cements used. Restorations cemented with primers containing methyl methacrylate and 10-methacryloyloxydecyl dihydrogen phosphate exhibited the highest retention force values. Aging did not affect the retention force significantly. Similar fracture load values can be expected from combination restorations when compared with monolithic crowns.
本研究的目的是在使用介观结构的新型粘结方法修复一体式氧化锆种植体时，评估不同粘结系统的断裂载荷和固位力。因此，设计了聚合物渗透陶瓷介观结构（= 112）作为种植体基台上的帽，并在其顶部构建了一个长石质陶瓷冠作为上部结构。对于粘结，使用了不同的粘结系统。在37°C水中储存24小时（= 8）后以及在咀嚼模拟器中人工老化并随后进行热循环（= 8）后，立即测量断裂载荷和固位力。与形状相同的聚合物渗透陶瓷（= 8）或长石质陶瓷（= 8）的整体修复体相比，组合修复体显示出更高的断裂载荷。然而，组合修复体的断裂载荷受老化的显著影响，与所用的底漆和粘结剂无关。用含有甲基丙烯酸甲酯和10 - 甲基丙烯酰氧基癸基磷酸二氢酯的底漆粘结的修复体表现出最高的固位力值。老化对固位力没有显著影响。与整体冠相比，组合修复体有望获得相似的断裂载荷值。
