All-On-X

All-on-x is a term used in the dental industry to define more simply, 'as a fixed restoration that is retained in place (by screw retention) in the mouth by 'x' number of implants.' There are usually a minimum of 4 or more implants placed in the upper arch, and 4 or more placed in the lower arch. It is a workaround term akin to 'All-on-Four,' which is trademarked by NobelBiocare.

There are several restorative options for types of screw-retained restorations within the All on X category. They are as follows: 1) a Hybrid Acrylic Denture- a traditional acrylic denture with denture teeth that is converted to an implant denture through a conversion/pick-up process chairside during the patient's implant surgery; this converted denture is now retained in place by means of 4 or more implants placed in the mouth; thereafter, it is screwed down onto the implants to specific torque values determined by the manufacturer of the implants. 2) Another type of Hybrid Denture is a Monolithic Zirconia Denture. It is milled out of one solid piece of multilayered, transitionally translucent Zirconia and affords a more forgiving, less problematic restoration; this restoration is retained by means of screws, which are torqued down onto implants to a specific value. 3) Another type of Hybrid restoration is a 'G CAM' hybrid restoration, which is a monolithic Graphelene (advanced polymer) material milled into a denture and telescopically fits over and is cemented to a Titanium bar, which is also screw-retained to 4 or more dental implants. 4) The fourth type of Hybrid denture is called a 'Thimble Bar CopyMilled restoration.' It consists of a Titanium thimble bar which has 10 individual preparations designed to receive 10 individual restorations, which are to be cemented over these preps; artificial gingival materials are subsequently layered around the crowns to provide realism and natural aesthetics. This restoration is also retained using screws and tightened down to the implants according to the manufacturer's recommended torque values.