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Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses

Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses

Published on: January 7, 2019

Five-year prospective study on conometric retention for complete fixed prostheses.

Eriberto Bressan, Luca Sbricoli, Riccardo Guazzo

International Journal of Oral Implantology (Berlin, Germany)

|May 23, 2019

Summary

The conometric system provides reliable fixed retention for complete prostheses on four implants over five years, with high patient satisfaction. Framework fractures were noted, highlighting the need for robust metal frameworks in long-term restorations.

Keywords:

conometric retention dental implants edentulous mandible fixed prosthesis

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Area of Science:

Dental Implantology
Prosthodontics
Biomaterials Engineering

Background:

Complete tooth loss in the mandible necessitates stable and functional prosthetic solutions.
Implant-supported complete prostheses (CPs) offer improved stability and function over conventional dentures.
Conometric abutments present an alternative retention system for implant-supported prostheses.

Purpose of the Study:

To assess the 5-year reliability of a conometric system for fixed retention of complete prostheses (CPs) supported by four dental implants.
To evaluate implant and prosthesis success rates, complications, and patient satisfaction with this system.

Main Methods:

A 5-year prospective study involving 25 patients with edentulous mandibles received four-implant supported CPs using conometric abutments.
Immediate loading of implants with CPs was performed.
Outcome measures included implant and prosthesis survival, complications, periodontal parameters (plaque index, bleeding index, probing depth), and patient satisfaction.

Main Results:

96% of implants in 24 patients completed the 5-year follow-up with no implant failures.
Two framework fractures occurred, but no loss of prosthesis retention was observed.
Periodontal parameters (PI, MBI, probing depth) showed no significant changes over 5 years.
Patient satisfaction was high, with 85% satisfied with both aesthetic and functional outcomes.

Conclusions:

The conometric retention system is reliable for fixed complete prostheses supported by four implants over a 5-year period.
Ensuring an adequate metal framework is crucial to prevent long-term fractures.
This system offers a viable treatment option for edentulous patients seeking stable and functional restorations.