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  • 1. Karlsson, Karolina
    et al.
    Derks, Jan
    Håkansson, Jan
    Wennström, Jan L.
    Molin Thorén, Margareta
    Umeå University, Faculty of Medicine, Department of Odontology.
    Petzold, Max
    Berglundh, Tord
    Technical complications following implant-supported restorative therapy performed in Sweden2018In: Clinical Oral Implants Research, ISSN 0905-7161, E-ISSN 1600-0501, Vol. 29, no 6, p. 603-611Article in journal (Refereed)
    Abstract [en]

    Objective: The aim of this study was to evaluate the occurrence and consequences of technical complications in implant-supported restorative therapy.

    Material & Methods: The occurrence and consequences of technical complications in implant-supported restorative therapy over a mean follow-up period of 5.3years were assessed based on documentation in files from 2,666 patients. Risk indicators were identified by the use of survival models, considering repeated events. Results were expressed as hazard ratios (HR) including 95% confidence intervals.

    Results: Technical complications occurred in 24.8% of the patients. Chipping and loss of retention were the most common, affecting 11.0% and 7.9% of supraconstructions, respectively, while implant-related complications (e.g., implant fracture) were rare. More than 50% of the affected patients experienced technical complications more than once and almost all reported complications led to interventions by a dental professional. The extent of the supraconstruction was the strongest risk indicator for both chipping (HR<0.2) and loss of retention (HR>3).

    Conclusion: Over a 5-year period, technical complications in implant-supported restorative therapy occurred frequently and their management required professional intervention.

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