Abstract
Innovations in digital manufacturing enabled the fabrication of implant-supported fixed dental prostheses (ISFDPs) in a wide variety of recently introduced materials. Computer-aided design and computer-aided manufacturing (CAD-CAM) milling allows the fabrication of ISFDPs with high accuracy by reducing the fabrication steps of large-span frameworks. The longevity of ISFDPs depends on the overall mechanical properties of the framework material including its fit, and the physical properties of the veneering material and its bond with the framework. This comprehensive review summarizes the recent information on millable CAD-CAM framework materials such as pre-sintered soft alloys, fiber-reinforced composite resins, PEEK, and PEKK in high-performance polymer family, and 4Y-TZP. Even though promising results have been obtained with the use of new generation millable CAD-CAM materials for ISFDPs, clinical studies are lacking and future research should focus on the overall performance of these millable materials in both static and dynamic conditions.
Highlights
Innovations in digital manufacturing enabled the fabrication of implant-supported fixed dental prostheses (ISFDPs) in a wide variety of recently introduced materials
Even though promising results have been obtained with the use of new generation millable Computer-aided design and computer-aided manufacturing (CAD-CAM) materials for ISFDPs, clinical studies are lacking and future research should focus on the overall performance of these millable materials in both static and dynamic conditions
New generation CAD-CAM fiber-reinforced composite resins (FRCs) have a high concentration of multidirectional interlacing of high glass fibers when compared with conventional FRCs, and have been used as ISFDP frameworks because of their claimed shock-absorbing behavior, low elastic modulus, and high flexural strength [35–37]
Summary
Digital dentistry’s influence on patients’ experience and dentist’s abilities has been remarkable. Daou et al [28] investigated the marginal accuracy of 3-unit FDPs fabricated with soft-milled alloy, casting Co-Cr alloy, or presintered zirconia. A similar study [17] reported that 3-unit FDPs fabricated by using presintered soft alloy showed marginal discrepancy (below 100 μm) similar to presintered zirconia or cast Co-Cr alloy. Woo et al [30] reported that soft-milled and hard-milled CAISFDPs had similar marginal accuracy (< 120 μm) compared with cast, and recommended softmilled Co-Cr alloy for CAISFDPs. Co-Cr frameworks can be veneered with polymethyl methacrylate (PMMA) [22, 31], composite resin [32], or porcelain [15, 23, 33, 34]. To the best of the authors’ knowledge, previous publications provide no information on the load-bearing capacity of soft-milled alloys, and no consensus has been reached on their marginal fit
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
