Archive for 'Knowledgebase'

Monolithic Zirconia Crowns and Bridges

Inside Dentistry article discussing Full Contour Monolithic Zirconia Crowns, their wear characteristics, soft tissue response and chemical aspects.

New all-ceramic, CAD/CAM-fabricated crowns and bridges are unbreakable and less expensive than traditional full-coverage PFM restorations.
By Harry A. Long, DMD

Every type of full-coverage restoration, from single unit to the classic roundhouse, has been fabricated using the workhorse of modern dental practice, the porcelain-fused-to-metal crown (PFM).1 When full coverage is required, the PFM has become the restoration of choice for most dentists. ...

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Cementation of Full-Contour Zirconia Restorations

A Spear Education article which discusses Cementation of Full-Contour Zirconia Restorations

The clinical procedures for cementation of zirconia restorations are similar to those used when cementing gold crowns. The primary resistance and retention form of the preparation is mainly responsible for the long-term success of the restoration. Because zirconia cementation uses a traditional cementation procedure, there are many material options.

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Veneer Try/Cementation

Clinical try-in.

Evaluate fit and esthetics.
-All veneers should be placed without bonding medium on teeth to assess the fit.
Contacts need to be carefully assessed to make sure one veneer does not prevent the seating of another.
Contacts are carefully adjusted with a fine diamond and high speed or flexible diamond disks.
Proximal contacts can be adjusted but occlusal adjustments are best done after final cementation.

Try in with K-Y jelly or glycerin as the trial adhesive. ...

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