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Journal of Prosthetic Dentistry

A straightforward approach to conservative screw access for implant-supported fixed complete dentures

  • Francisco X. Azpiazu-Flores
    Correspondence
    Corresponding author: Dr Francisco X. Azpiazu-Flores, Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Postle Hall 305 W. 12th Ave, Columbus, Ohio 43210
    Affiliations
    Graduate student, Advanced Prosthodontics Program, Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio
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  • Severino J. Mata-Mata
    Affiliations
    Graduate student, Advanced Prosthodontics Program, Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio
    Search for articles by this author
      For decades, implant-supported fixed complete dentures have been used successfully to restore the masticatory system of edentulous patients.
      • Adell R.
      • Lekholm U.
      • Rockler B.
      • Branemark P.I.
      A I5-year study of osseointegrated implants in the treatment of the edentulous jaw.
      ,
      • Carlsson B.
      • Carlsson G.E.
      Prosthodontic complications in osseointegrated dental implant treatment.
      Multiple combinations of materials are available for the fabrication of these prostheses, each with different clinical indications and physical properties.
      • Göthberg C.
      • Bergendal T.
      • Magnusson T.
      Complications after treatment with implant-supported fixed prostheses: a retrospective study.
      Fixed complete dentures have a long history of use
      • Adell R.
      • Lekholm U.
      • Rockler B.
      • Branemark P.I.
      A I5-year study of osseointegrated implants in the treatment of the edentulous jaw.
      and have been reported to protect the bone-to-implant interface because of the shock-absorbing properties of the acrylic resin covering the framework.
      • Adell R.
      • Lekholm U.
      • Rockler B.
      • Branemark P.I.
      A I5-year study of osseointegrated implants in the treatment of the edentulous jaw.
      ,
      • Carlsson B.
      • Carlsson G.E.
      Prosthodontic complications in osseointegrated dental implant treatment.
      ,
      • Skalak R.
      Biomechanical considerations in osseointegrated prostheses.
      Nevertheless, the acrylic resin component of these prostheses is also associated with their most common technical complications, including wear, fracture of the acrylic resin matrix teeth, and poor esthetics.
      • Carlsson B.
      • Carlsson G.E.
      Prosthodontic complications in osseointegrated dental implant treatment.
      ,
      • Johansson G.
      • Palmqvist S.
      Complications, supplementary treatment, and maintenance in edentulous arches with implant-supported fixed prostheses.
      • Fischer K.
      • Stenberg T.
      • Hedin M.
      • Sennerby L.
      Five-year results from a randomized, controlled trial on early and delayed loading of implants supporting full-arch prosthesis in the edentulous maxilla.
      • Fischer K.
      • Stenberg T.
      Prospective 10-year cohort study based on a randomized, controlled trial (RCT) on implant-supported full-arch maxillary prostheses. Part II: prosthetic outcomes and maintenance.
      The acrylic resin matrix has been described as the weak link in this prosthesis
      • Göthberg C.
      • Bergendal T.
      • Magnusson T.
      Complications after treatment with implant-supported fixed prostheses: a retrospective study.
      as its performance is affected by the masticatory dynamics and the shape and adequate thickness of the restorative material.
      • Fischer K.
      • Stenberg T.
      Prospective 10-year cohort study based on a randomized, controlled trial (RCT) on implant-supported full-arch maxillary prostheses. Part II: prosthetic outcomes and maintenance.
      ,
      • Sekinishi T.
      • Inukai S.
      • Murakami N.
      • Wakabayashi N.
      Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: an experimental and finite element analysis.
      The following article describes a straightforward method of creating conservative screw access for implant-supported fixed complete dentures by using a modified tapered abutment analog, an apical drill, precut laboratory cutter shanks, and a fine-grit, torpedo-shaped tungsten carbide cutter.
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      References

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        Complications after treatment with implant-supported fixed prostheses: a retrospective study.
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        Biomechanical considerations in osseointegrated prostheses.
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        Five-year results from a randomized, controlled trial on early and delayed loading of implants supporting full-arch prosthesis in the edentulous maxilla.
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        Prospective 10-year cohort study based on a randomized, controlled trial (RCT) on implant-supported full-arch maxillary prostheses. Part II: prosthetic outcomes and maintenance.
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        • Sekinishi T.
        • Inukai S.
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        Influence of denture tooth thickness on fracture mode of thin acrylic resin bases: an experimental and finite element analysis.
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