Preparation for Dentists
Careful preparation is decisive for the accuracy of fit and durability of the restoration.
Precise marginal design with a circular shoulder or a chamfer preparation with rounded inner edges is important. Avoid sharp transitions and feather edges. Adhesive cementation permits defect-oriented preparation.
In order to achieve sufficiently strong restorations, the minimum thicknesses have to be observed. With the IPS e.max system, the recommended areas of indication, preparation recommendations and connector strength values for the material used (LS2 or ZrO2) have to be observed.
Cementation and Professional Care
Manifold cementation possibilities
IPS e.max restorations permit flexibility of cementation, since the crowns and bridges can be cemented adhesively, self-adhesively or conventionally. Inlays, onlays and veneers are adhesively cemented as usual. Depending on the indications, you may choose from the comprehensive range of Ivoclar Vivadent cementation materials:
Variolink II / Variolink Veneer
The dual-curing, highly esthetic luting composite Variolink II has provided excellent clinical results for more than 10 years. For the cementation of veneers, the light-curing Variolink Veneer is used, which permits a brightening or darkening of the ceramic restoration with its special shade concept.
The universal luting composite Multilink Automix offers a broad range of indications. It provides high bonding strength and an excellent durable bond. Together with the primer A/B, the dentin is sealed and good marginal adaptation is achieved.
The self-adhesive, dual-curing luting composite is even easier to use than a conventional cement. At the same time, it offers the additional advantages of a composite, such as higher bond strength and translucency, as well as lower water solubility.
The classical self-curing glass ionomer cement is suitable for the cementation of high-strength ceramic materials, such as IPS e.max, among others. It contains a particularly transparent glass filler for achieving esthetic results.
Etching and silanization
Lithium disilicate (LS2) restorations are generally etched before incorporation!
IPS Ceramic Etching Gel (20 s) is used to generate retentive bonding surfaces on all-ceramic restorations in preparation for incorporation. It enhances the bonding effect between the luting composite and the ceramic bonding surface.
With adhesive and self-adhesive cementation of IPS e.max lithium disilicate (LS2) restorations, as well as the adhesive cementation of zirconium oxide (ZrO2), Monobond Plus (60 s) is used for silanization. Silanization is not required for the self-adhesive cementation of ZrO2. This also applies to conventional cementation. Monobond Plus is a primer mediating an adhesive bond between the luting composite (particularly the Variolink and Multilink product lines) and all indirect restorative materials (glass and oxide ceramics, metals, composites, fibre-reinforced composites).
Professional care and aftercare
Same as natural teeth, high-quality all-ceramic restorations require regular professional care. This is beneficial for both the health of the gingiva and teeth, as well as the overall appearance. With the pumice-free polishing paste Proxyt pink, high-quality surfaces are gently treated and maintained without abrasion.
Are you keen to better negotiate your way through the process of choosing the right luting cement? The Cementation Navigation System, the new multimedia application from Ivoclar Vivadent, offers dentists practical orientation and guidance. Click the link below for more information.