All Zirconia Screw Retained Bridges
CAD/CAM designed and milled, all-zirconia screw retained bridges are stronger than other ceramic bridges. These screw retained bridges offer excellent esthetics as zirconia can be stained or layered as needed and the bridge can be retrieved for inspection, repairs, or cleaning. This implant can be rigidly splinted due to the high modulus of elasticity of zirconia and milling the bridge eliminates distortions and casting errors leading to a more precise fit of the prosthesis. It also reduces plaque retention. Approximately 12mm prosthetic height is required from the implant platform to the occlusal table.
A shoulder prep is not needed, a mild chamfer or feather edge margins is adequate. For buccal, lingual, and occlusal reduction 1mm is ideal, but can go 0.5mm in some areas where further reduction is needed.
Zeus Full Zirconia can be cemented using resin reinforced glass ionomer such as RelyX Luting cement. For maximum bond strength, use resin cement like RelyX Ultimate, Panavia V5 or Multilink Automix. Before delivery to your office, the interior surface of all zirconia crowns are cleaned with Ivoclean and disinfected ready for insertion.
If adjustments are needed, use zirconia specific diamonds and wheels with diamond paste. Adjust full-contour zirconia crowns and bridges using fine diamond burrs, water and air spray to keep restoration cold and to avoid microfractures. Restorations can be polished with Brasseler Dialite system or similar substitutes. For a high shine, you can use Ziocon-Brite from DVA with stiff bristle brush or similar substitutes.