Masking Ability of Implant Abutment Substrates by Using Different Ceramic Restorative Systems

The restoration of missing teeth through implant reconstructions represents a reliable treatment modality. The survival rates for fixed dental prostheses (FDPs) are reported to be between 89% and 94% over a 10-year period. Hence, the objective of this systematic review was to assess the masking ability of implant abutment substrates by using different ceramic restorative systems. The present review analyzed the masking ability of implant abutment substrates by using different ceramic restorative systems. This review has revised the literature search and data extraction processes of an earlier systematic review concerning the masking properties of implant abutment substrates, incorporating relevant studies published subsequently. This review has identified that monolithic ceramics must be employed judiciously in the presence of discolored implant abutments. The use of bilayer systems, specifically zirconia combined with polymer ceramics, has proven to be the most reliable method for effectively concealing discolored substrates, including PEEK and titanium. Additionally, an increase in the thickness of the restoration enhances the masking capability across all restorative materials evaluated. The variety of modern materials and techniques accessible for the production of implant-supported, all-ceramic restorations complicates the selection of the most suitable treatment approach. The market is continuously evolving, with new products being introduced alongside an extensive array of existing options. Ongoing research is focused on the development of zirconia-alumina composites that are resistant to degradation at low temperatures, particularly for use in dental implant abutments. Future advancements are expected to facilitate the production of more resilient abutments and restorations, characterized by superior quality and reduced fabrication time and costs.