How to Prevent Fractures in Zirconia-Based Restorations

Dennis Ouye, CDT · Technical · Sep 2009

  • This PFM restoration failed due to a lack of support for ceramic at the marginal ridge. Note the fracture at the lingual margin due to possible flexure in that area.

  • Like metal, zirconia should be extended to the contact point of adjacent teeth to support the ceramic at the marginal ridges.

  • The porcelain is supported by the zirconia rod at the contact point where occlusal forces are the greatest.

About The Author
Dennis Ouye, CDT

President at LDL Designs, Inc.

Dennis Ouye, CDT, is President of LDL Designs, Inc. in Berkeley, CA. He's held technician courses with Dr. Harry Albers at the University of California at San Francisco and University of the Pacific School...

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