Restorative material selection has become increasingly challenging due to the speed of new developments in the field of dental material science. The present narrative review gives an overview of the current indications for implant abutments and restoration materials for provisional and definitive implant-supported fixed dental prostheses in partially edentulous patients. For single implant restorations, titanium base abutments for crowns are suggested as an alternative to the conventional stock- and customized abutments made out of metal or zirconia. They combine the mechanical stability of a metallic connection with the esthetic potential of ceramics. For multiple-unit restorations, conical titanium bases especially designed for bridges are recommended, to compensate for deviating implant insertion axes and angulations. Even though titanium base abutments with different geometries and heights are available, certain clinical scenarios still benefit from customized titanium abutments. Indications for the definitive material in fixed implant restorations depend on the region of tooth replacement. In the posterior (not esthetically critical) zone, ceramics such as zirconia (3-5-Ymol%) and lithium-disilicate are recommended to be used in a monolithic fashion. In the anterior sector, ceramic restorations may be buccally micro-veneered for an optimal esthetic appearance. Lithium-disilicate is only recommended for single-crowns, while zirconia (3-5-Ymol%) is also recommended for multiple-unit and cantilever restorations. Attention must be given to the specific mechanical properties of different types of zirconia, as some feature reduced mechanical strengths and are therefore not indicated for all regions and restoration span lengths. Metal-ceramics remain an option, especially for cantilever restorations.

中文翻译：

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部分无牙颌患者 CAD/CAM 种植体支持的固定假牙的材料和基台选择 - 叙述性评论。


由于牙科材料科学领域新发展的速度，修复材料的选择变得越来越具有挑战性。本叙述性综述概述了部分缺齿患者临时和最终种植体支持的固定牙修复体种植体基台和修复材料的当前适应症。对于单种植体修复体，建议使用钛基牙冠替代由金属或氧化锆制成的传统库存基台和定制基台。它们将金属连接的机械稳定性与陶瓷的美观潜力结合在一起。对于多单元修复体，建议使用专为牙桥设计的锥形钛基托，以补偿种植体插入轴和角度的偏差。尽管有不同几何形状和高度的钛基基台可供选择，但某些临床情况仍然受益于定制的钛基台。固定种植体修复中最终材料的适应症取决于牙齿替换的区域。在后部（不美观）区域，建议以整体方式使用氧化锆 (3-5-Ymol%) 和二硅酸锂等陶瓷。在前牙区，陶瓷修复体可以进行颊侧微贴面，以获得最佳的美观外观。二硅酸锂仅推荐用于单牙冠，而氧化锆 (3-5-Ymol%) 也推荐用于多牙和悬臂修复体。必须注意不同类型氧化锆的具体机械性能，因为某些氧化锆的机械强度较低，因此并未针对所有区域和修复体跨度长度进行说明。 金属陶瓷仍然是一种选择，特别是对于悬臂修复体。