CROWN AND BRIDGE
Zirconia crowns offer distinct aesthetic advantages when compared to PFM crowns. Unsightly black lines around margins are eliminated due to the tooth coloured core of the zirconia restoration. Zirconia also offers high strength and stability in manufacture resulting in its suitability for use in long span bridges. At J J Ceramics we offer our own in-house milling facility where we control all aspects of design and manufacture. We currently use iZr zirconia for all frameworks and posterior crowns as well as implant abutments. With a strength of 1400 MPa Izir zirconia is one of the strongest zirconia materials on the market but has similar wear to tooth enamel when glazed. This is an excellent alternative to full metal crowns in bruxer cases where strength and aesthetics can be achieved.
For more aesthetic demands we also use iZr glass zirconia(800MPa) as well as CubeX zirconia(600Mpa). Both of these ultra translucent zirconia materials offer excellent fit and aesthetics.
All zirconia crowns can be monolithic (milled to full surface contour) or layered with ceramic if high aesthetics is to be achieved.
We are now using multi-layer ultra translucent zirconia for monolithic crowns that require more aesthetic appeal, whilst retaining strength.
We are constantly updating our skills and knowledge so that we can stay at the forefront of Cad/Cam technology.
- Ultra translucent zirconia is used for single unit crowns, as well as three unit anterior bridges.
- Ultra translucent multi-layer zirconia is our new zirconia of choice for monolithic aesthetic crowns for three unit bridges in posterior and anterior regions
- Super translucent zirconia is used for single crowns and up to full arch bridges
- Brukser crowns are used where strength is a priority
(These can be layered with ceramic for aesthetic appeal)
PFM (Porcelain fused to metal) crowns have been on the market for decades and have been proven over time to offer a good combination of strength, aesthetics and accuracy of fit. Here at JJ Ceramics we only use TGA approved biocompatible alloys and fluoroapatite containg ceramic that will guarantee a durable and natural aesthetic result. PFM crowns can be made from high noble, semi-precious and non-precious metals. In addition to traditional casting of alloys we also offer coprasintec sintered bonding alloy. This is a milled product that is sintered in an Argon rich atmosphere resulting in a homogenous metal substructure free of contaminants that ultimately enhances bond strength of the ceramic to the metal. Our milled PFM crowns and bridges are designed to accurately eliminate all undercuts to ensure ease of fit and margin accuracy.
IPS e.max offers a combination of exceptional aesthetics, versatility and strength. IPS e-Max has become the material of choice for many dental practices. The material is highly translucent and can be used for crowns, bridges, inlays and onlays and veneers. The lithium disilicate material is etched and bonded resulting in a far more durable restoration. The material can be pressed or milled to full contour (monolithic) or layered with ceramic for highly aesthetic cases.
Radiance is our new lithium disilicate imported from South Korea. Radiance has a strength of 500 mpa and offers a budget alternative to IPS e.max. Radiance is avaliable as monolithic or aesthetically layered.
- Both IPS e.max and Radiance can be used for single unit crowns and three unit anterior bridges.
Full metal offer excellent longevity and functional success. At JJ Ceramics we offer precious, semi-precious and non-precious options in silver and gold colours. Excellent wear rates comparable to enamel (when polished).
Our PMMA crowns are designed and milled using CAD/CAM, they used mainly as provisional short-term restorations. However, they can be used as long-term provisionals, due to their hardness and resistance to abrasion.
Implant retained restorations can be manufactured from a wide range of dental materials. Implant restorations can be fixed or removable. Each case needs to be assessed to establish the best treatment plan for the success of the restoration and the patients’ acceptance of the case.
Fixed implant restorations can be screw retained or cementable.
Screw retained implants have the advantage of being salvageable if the screw becomes loose in the implant. Cementable implants will need to be cut off in this situation. Screw retained implants were limited in the past to cases where the angle of insertion was not such that the screw hole adversely affected the restoration aesthetically. Here at JJ Ceramics we can adjust the angle of the screw-hole by up to 30 degrees by using a special dynamic screw and abutment. We mill our dynamic abutments in-house to give our clients a cost effective solution.
Cementable options include the use of customised abutments or prefabricated titanium abutments. We use original parts but also offer generic components that are guaranteed and are more cost effective.
Removable Implant restorations include dentures that are retained by various bar designs as well as clips or balls.