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Related Experiment Videos

Five-year results with fixed complete-arch mandibular prostheses supported by 4 implants.

A Eliasson1, S Palmqvist, B Svenson

  • 1Department of Prosthetic Dentistry, Postgraduate Dental Education Center, Orebro, Sweden. alf.eliasson@orebroll.se

The International Journal of Oral & Maxillofacial Implants
|August 29, 2000
PubMed
Summary

Restoring an edentulous mandible with a 4-implant supported fixed prosthesis is viable. This study found a high implant survival rate, suggesting 4 implants may suffice for mandibular restorations.

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Area of Science:

  • Dentistry
  • Oral Implantology
  • Prosthodontics

Background:

  • Complete-arch fixed prostheses offer solutions for edentulous mandibles.
  • The optimal number of implants for supporting these prostheses is debated.
  • Assessing outcomes with fewer implants is crucial for treatment planning.

Purpose of the Study:

  • To evaluate the survival rate of complete-arch mandibular prostheses supported by only 4 implants.
  • To determine if 4 implants can maintain survival rates comparable to those with more implants.
  • To identify potential complications and influencing factors in 4-implant supported restorations.

Main Methods:

  • A prospective study involving 119 patients receiving 4-implant supported complete-arch mandibular prostheses.
  • Routine follow-up protocols including annual check-ups and radiographic examinations.

Related Experiment Videos

  • Radiographic measurements assessed bone loss around implants over time.

    • Main Results:

    • An implant survival rate of 98.6% was observed after 5 years.
    • No clear link between the number of implants and technical/surgical complications was found.
    • Higher rates of resin tooth fracture occurred in patients with concurrent maxillary implant prostheses.

    Conclusions:

    • Four implants may be sufficient to support a fixed mandibular prosthesis, particularly when using longer implants (≥10 mm).
    • This approach demonstrates a high implant survival rate, challenging the necessity for more implants.
    • Further research may explore patient-specific factors influencing prosthesis longevity.