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Volume 13 , Issue 4
July/August 1998

Pages 561564

Light and Scanning Electron Microscopic Report of Four Fractured Implants

Adriano Piattelli, MD, DDS, Maurizio Piattelli, MD, DDS, Antonio Scarano, DDS, Luigi Montesani, MD, DDS.

PMID: 9714964

Although they are fortunately rare, implant fractures can cause significant problems for both clinicians and patients. The authors present a light and scanning electron microscopic study of four fractured implants in two patients. Both patients had parafunctional habits (bruxism), hypertrophic masticatory muscles, and wear of occlusal surfaces. The scanning electron microscopic study of the fractured surfaces of all four implants showed the presence of fatigue striations. Bending overload was probably created by a combination of parafunctional forces, bone resorption, posterior location of the implants, and implant diameter. (INT J ORAL MAXILLOFAC IMPLANTS 1998;13:561564) Key words: bending moments, biomechanics, bone resorption, bruxism, fractures overload, implant failure, metal fatigue

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