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Choosing the Correct Form of Zirconia

- Jun 30, 2018 -

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Choosing the Correct Form of Zirconia

When selecting zirconia for a bridge, it is important to choose the correct form for the clinical requirements of the patient. Choices include, solid zirconia, layered zirconia and high-translucent zirconia.

 

When to Select Solid Zirconia

Solid zirconia is monolithic and made from pure zirconia. This material has a high flexural strength of 1200 MPa while still maintaining lifelike translucency. It also has a natural opalescence. Solid zirconia is extremely strong and is an ideal material for patients who may have bruxism. Solid zirconia is particularly good for posterior bridges or where the tooth preparations are discoloured or have been endodontically treated. Due to the higher opacity of solid zirconia, it is not recommended for anterior bridges.

 

When to Select High Translucent Zirconia

With 720 MPa, high-translucent zirconia has a higher flexural strength than PFM restorations, yet they can maintain a natural translucency, closely replicating the vibrancy of existing teeth. The material is perfect for anterior and posterior bridges of up to 3 units and aesthetics are superb. High translucent zirconia may not be ideal in certain situations where orthodontic situations cannot be corrected using restorative methods.

Zirconia can be the ideal choice for bridge restorations provided the proper selection and preparation is followed. These CAD/CAM-generated restorations provide an excellent and very precise marginal fit which when combined with exceptional aesthetics can help to increase patient satisfaction.