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February 5, 2026Reports — Medical Cases Images and VideosOpen Access

Fractured Full-Arch Tooth-Supported Zirconia Bridge: Thin Design, Surface Damage, and Excessive Cement Layer Thickness

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Authors

JTJoão Paulo Mendes TribstBJBart J. JansenRPRafaela Oliveira Pilecco

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Overview

This report demonstrates design flaws and surface damage leading to zirconia bridge failures, indicating critical evaluation is necessary.

Key Points

  • The investigation focuses on the premature fracture of a zirconia bridge and the contributing design and failure factors.
  • Analysis of STL files from dental laboratory to assess framework thickness.
  • Fractographic examination of fractured bridge pieces to identify failure mechanisms.
  • Evaluation of cement layer thickness and surface conditions before cementation.
  • Zirconia bridge fractured after eleven months due to multifactorial failure patterns.
  • Framework thickness was found to be below manufacturer recommendations.
  • Surface damage and thick cement layers contributed to the failure, with crack propagation noted in occlusal-to-cervical direction.

Cite This Study

Tribst et al. (2026) studied this question.

synapsesocial.com/papers/6984345ff1d9ada3c1fb25d6https://doi.org/10.3390/reports9010049
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