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Clinical and radiographic evaluation of osseotite-expanded platform implants related to crestal bone loss: a 10-year study

Authors

  • José Luis Calvo-Guirado,

    Corresponding author
    1. Department of Implant Dentistry, School of Medicine and Dentistry, University of Murcia, Murcia, Spain
    • Corresponding author:

      Prof. José Luis Calvo Guirado, DDS, MSc, PhD

      Marques de los Velez s/n Hospital Morales Meseguer, 2o Planta Clinica Odontologica Universitaria. 30007 Murcia, Spain.

      Tel./Fax: +868888584

      e-mail: joseluis.calvo@um.es

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  • Gerardo Gómez-Moreno,

    1. Department of Pharmacological Interactions in Dentistry, Dental School, University of Granada, Granada, Spain
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  • Rafael A. Delgado-Ruiz,

    1. Department of Implant Dentistry, School of Medicine and Dentistry, University of Murcia, Murcia, Spain
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  • José E. Maté Sánchez de Val,

    1. Department of Implant Dentistry, School of Medicine and Dentistry, University of Murcia, Murcia, Spain
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  • Bruno Negri,

    1. Department of Implant Dentistry, School of Medicine and Dentistry, University of Murcia, Murcia, Spain
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  • María P. Ramírez Fernández

    1. Department of Implant Dentistry, School of Medicine and Dentistry, University of Murcia, Murcia, Spain
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Abstract

Objective

The aim of this prospective clinical study was to evaluate the survival rates at 10 years of expanded platform implants placed in the anterior zone of the maxilla and immediately restored with single crowns.

Materials and methods

Implants incorporating the platform-switching concept were placed in fresh extraction sockets in the maxillary arch, with each patient receiving a provisional restoration immediately after implant placement. After 15 days, final screwed restorations were inserted. Mesial and distal bone heights were evaluated using digital radiography on the day following implant placement and at 1, 5, 7, and 10 years. Primary stability was measured with resonance frequency analysis (RFA) using the Osstell Mentor device. Eighty-six implants were placed in 32 men and 32 women ranging in age between 29 and 60 (mean, 39.64 ± 5.16 years).

Results

Marginal bone loss from implant collar to bone crest between baseline and 10 years follow-up was 1.01 mm ± 0.22. Mesial site crestal bone loss ranged from 3.57 mm ± 1.1 at baseline to 3.77 mm ± 0.7 at 10-year. Distal site crestal bone loss ranged from 3.49 mm ± 0.8 at baseline to 3.73 mm ± 0.7 at 10 year.

Conclusion

The platform-switched implants remained stable over the course of 10 years and had an overall survival rate of 97.1%.

Ancillary