Share Page:

Volume 29 , Issue 6
November/December 2016

Pages 581583

Fractographic Analysis of a Clinically Failed FPD After 10 Years in Service

Youssef S. Al Jabbari, BDS, MS, FACP, PhD

PMID: 27824978
DOI: 10.11607/ijp.4878

This study retrieved and analyzed by scanning electron microscopy (SEM) and energydispersive x-ray spectroscopy (EDS) the failure of a single four-unit fixed partial denture (FPD). Low SEM magnifications revealed a smooth/featureless fracture surface, indicating brittle fracture. Higher magnifications revealed a small fatigue fracture region located on the inferior part of the connector. EDS analysis indicated that the FPD alloy was gold-based. Additionally, SEM showed segregation of small spherical particles at grain boundaries of the alloy, with high aluminum and oxygen content. The particles, most likely retained aluminum, possibly resulted from sandblasting procedures for a scrap metal alloy, which was then recast into a new FPD. It appears that the fracture was initiated in the oral cavity by fatigue crack formation, but the presence of Al2O3 particles facilitated alloy embrittlement and brittle fracture.

Full Text PDF File | Order Article


Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.


© 2020 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Author Guidelines
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us