PMMA Provisional
PMMA Provisional material is milled out of a multilayered block of high strength PMMA acrylic resin. The natural translucence of the material links itself to esthetic results. This is an excellent solution for patients who require an esthetic and protective temporary restoration while their permanent restoration is being fabricated. It is designed to form a tooth shape around the prepped tooth, preventing damage to the periodontal tissues and to disguise the prep until the final restoration is complete. PMMA is typically used no longer than 4 weeks. It is commonly used for crowns, bridges, and pre-op shell temps.
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.