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Split-Framework in Mandibular Implant-Supported Prosthesis.

Danny Omar Mendoza Marin1, Kássia de Carvalho Dias1, André Gustavo Paleari2

  • 1Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista (UNESP), Humaitá Street 1680, 14801-903 Araraquara, SP, Brazil.

Case Reports in Dentistry
|January 16, 2016
PubMed
Summary

Mandibular flexure can compromise implant-supported prostheses. A split-framework design effectively reduced implant stress and screw loosening in an edentulous patient, improving prosthesis longevity and comfort.

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Area of Science:

  • Dental Implantology
  • Biomechanical Engineering
  • Prosthodontics

Background:

  • Mandibular flexure is a critical biomechanical factor in oral rehabilitation with implant-supported prostheses, particularly when implants are placed posterior to the interforaminal region.
  • Fixed full-arch implant-supported prostheses can experience stress, leading to complications like screw loosening, poor fit, and implant loss due to mandibular deformation during function.

Purpose of the Study:

  • To describe the oral rehabilitation of an edentulous patient using a mandibular fixed implant-supported prosthesis with a split-framework.
  • To evaluate the effectiveness of a split-framework in compensating for mandibular flexure and its impact on prosthesis stability and patient comfort.

Main Methods:

  • A clinical report detailing the design and implementation of a split-framework for a mandibular implant-supported prosthesis in an edentulous patient.
  • Assessment of prosthesis fit, implant stability, screw loosening, and patient comfort over a one-year period.

Main Results:

  • The split-framework design successfully reduced stress within the restorative system by compensating for mandibular flexure.
  • No instances of screw loosening or loss of posterior implants were reported over the one-year follow-up period.
  • Patients reported acceptable comfort levels, suggesting improved functional restoration of the mandible.

Conclusions:

  • The use of a split-framework in mandibular implant-supported prostheses is an effective strategy to mitigate complications arising from mandibular flexure.
  • This approach enhances the longevity of the prosthesis and improves patient outcomes by ensuring a passive fit and reducing biomechanical stress.