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      Fractures related to occlusal overload with single posterior implants: a clinical report.

      1 , ,
      The Journal of prosthetic dentistry
      Elsevier BV

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          Abstract

          This clinical report describes 2 patient situations in which fractures related to occlusal overload occurred with a single posterior implants. The initial clinical presentation of both patients appeared to be screw loosening, but upon further examination, implant and abutment fractures were identified. Several factors are described that have been implicated in the etiology of implant fractures, including occlusal overload, implant location, inadequate fit of the prosthesis, design of the prosthesis, progressive bone loss, metal fatigue, implant diameter, manufacturing defects, and galvanic activity. This article describes the management of implant and abutment fractures and discusses possible mechanisms of failure for the patient situations presented. Careful treatment planning and execution of implant therapy is necessary to minimize the risk of implant and component fractures.

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          Author and article information

          Journal
          J Prosthet Dent
          The Journal of prosthetic dentistry
          Elsevier BV
          0022-3913
          0022-3913
          Apr 2008
          : 99
          : 4
          Affiliations
          [1 ] Division of Prosthodontics, Department of Restorative Sciences. School of Dentistry, University of Minnesota, Minneapolis, MN 55455, USA. conr0094@umn.edu
          Article
          S0022-3913(08)00041-3
          10.1016/S0022-3913(08)00041-3
          18395533
          f3a2e17b-7feb-4d81-80aa-d00da8289123
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