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Pubmed for Handhelds

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  • Title: Numerical analysis of a dental implant system preloaded with a washer.
    Author: Versluis A, Korioth TW, Cardoso AC.
    Journal: Int J Oral Maxillofac Implants; 1999; 14(3):337-41. PubMed ID: 10379106.
    Abstract:
    Gold screw loosening is a problem that frequently affects dental implants. The application of a preload has been the main means of preventing loosening. However, this measure has not been able to eliminate its occurrence. In this study the effect of a washer in a Brånemark-type implant on the loosening conditions of the retaining screw was investigated using a finite element simulation. The simulation indicated that a washer may significantly increase the tolerance of a screw against loosening. This is accomplished by increasing the tolerance of the implant against deformation. The addition of a customized washer to a dental implant system may offer a very simple and inexpensive solution for the persistent problem of screw loosening.
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