All Ceramic Options

In achieving the ultimate, natural looking high cosmetic dental restoration we copy as closely as possible the composition of a natural tooth.

This process means the removal of any metal from within the build.

There are many all-ceramic options available, from fully bondable Lucite or Lithium Disilicate reinforced pressed ceramics to high strength colour matched substructures made from Zirconia which are ideal for bridge frameworks and now Super Translucent Zirconia for high aesthetic monolithic crowns and bridges with incredible strength (900-1100mpa).

Important information needed:

In order to guarantee successful results it is imperative certain information is transmitted to the technician;

  • Shade of the underlying preparation/dentine (ND) Natural Dentine (Shade)
  • Presence of amalgams causing blue/grey hues?
  • Metal cores and implants abutments.

Crowns & Bridges

  • Pressed ceramic crown cutback & layered
  • (Covers mildly discoloured preps at 1mm minimum thickness, can develop 2 shade adjustments e.g. A3 change to A1)
  • Layered build on High Opacity Nucleus
  • (Covers everything, metal, amalgam, darkest preps, not ideal for veneers due to thickness)
  • Monolithic pressed ceramic stained & glazed.
  • (Covers mildly discoloured preps at 1mm minimum thickness, can develop 2 shade adjustments e.g. A3 change to A1)
  • Zirconia framework supported ceramic crown.
  • Full translucent Zirconia crown

Onlay's

    • Litium Disilicate High Translucent pressed ceramic. Not for discoloured preps.
    • Full Zirconia onlay. High strength, ideal for bruxist, bite opening.

     

Veneers

  • Pressable ceramic veneer, ideal for small to large build-ups, will cover mild discolouration.
  • Felspathic ceramic veneer, for small builds, can be made to cover heavy discolouration.
  • Contact lens ceramic veneer, good for re-shaping and diastema closure, no discolouration.
  • Partial ceramic veneer, as above mainly distema closure,

 

Tips on choosing the correct cementation material.

  • Crowns on tooth preparations with margins beyond the CEJ and with adequate resistance form should be cemented in place with a RMGI (Resin Modified Glass Ionomer) cement rather than a resin cement. This then necessitates the use of a high strength, Al or Zi based ceramic system.
  • Crowns on tooth preparations with margins beyond the CEJ and with inadequate resistance form should be cemented in place with resin cements. Resin cements allow for either a low strength, glass based or high strength Al or Zi based system to be used assuming the underlying substrate is not too dark. Note that this is an unavoidable compromise because in order to achieve adequate retention, a resin cement needs to be used despite the fact that the margins are on dentine or cementum.
  • Crowns on tooth preparation with equigingival margins in enamel and good underlying substrate colour should be made from a translucent, glass based ceramic system. These will require cementation with a resin cement under rubber dam.
  • Crowns on a dark underlying tooth substrate need to be made from a high strength and opaque Al or Zi based ceramic system. For aesthetic reasons, the margins should be extended slightly subgingival beyond the CEJ. This will then necessitate cementation with an rmgi.

From a difficult anterior crown to full smile makeovers, we are dental implant restoration and veneer specialists for those who recognise and appreciate excellence. 

Please contact us to discuss your requirements. 01765 607347

 

Acknowledgements: B Mizrahi BDJ Sept 2008