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Failure of Amalgam Restoration: Tooth Fracture

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It this article about failure of amalgam restorations, we will explain the etiology of the amalgam restored tooth fracture, clinical picture, causes, etiology and methods of treatment.

Tooth Frature

Tooth Frature

Tooth Fracture

Definition

 

Fractured cusp or ridge under functional forces due to lack of support and reinforcement in the restored tooth.

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Fractured cusp

Fractured cusp

Fractured Cusp

Fractured Cusp

Fractured Tooth

Fractured Tooth

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Etiology

Amalgam lacks sufficient tensile strength to support remaining tooth substance and much less able to re-enforce weak cusps and ridges. Thus it leads to a worst outcome if the restoration is relatively large leading to less support of remaining tooth structure.

Consequence of Large filling

Consequence of Large filling

Treatment

  • Eliminate all undermined enamel as well as weak cusps and ridges.
  • Preserve the integrity and continuity of the remaining tooth substance. Roundation of
  • line angles.
  • Ensure wide distribution of stresses.
  • Reinforce weak cusps and ridges using inlays, onlays or full coverage.
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Onlay for Treatment of amalgam restored fracture tooth

Onlay for Treatment of amalgam restored fracture tooth

Preparation of tooth for inlay / onlay

Preparation of tooth for inlay / onlay


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About Author

Dr. Mohsen Saeed Ozaibi

A Dentist, Professional Blogger and Owner on OziDent.com. Graduated in 2009 with a Bachelor Degree in Dental Science from Misr International University. A Pioneer in Digital Dental Content Publishing.

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