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Two-unit Cantilever Implant Prostheses Made of Monolithic Zirconia or PFM

RecruitingNAAges 22 Years - anyAllUniversity of Geneva, Switzerland
NCT04713800 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

The aim of is to compare the survival rate and technical outcomes of cantilever implant-supported fixed denture prosthetics (cFDPs) made either out of monolithic zirconia bonded to a titanium base in a digital workflow, or porcelain fused-to metal using a gold abutment in a conventional workflow. In addition, biological outcomes, wear patterns, PROMs and time efficiency will be recorded. The null hypothesis is: the reconstruction type does not influence the survival rate and technical outcomes of 2-unit implant-supported cFDP.

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📋 Eligibility rules (as published)
Inclusion Criteria: * Minimal age of 22 years old. * No general medical condition which represents a contraindication to implant treatment * Good oral hygiene (PII ≤ 20%), and healthy periodontal tissues (BOP≤ 20%) * Two adjacent-teeth gap in posterior maxilla or mandible arch (first premolar, second premolar, first molar, second molar) with an osseointegrated regular or wide-diameter bone-level implant in a prosthetically correct position to allow occlusal screw-retention. Free-end edentulous gaps can also be included * Presence of antagonist occlusal units Exclusion Criteria: * Severe bruxism or clenching habits * Patients with inadequate oral hygiene or persistent intraoral infection * Women who are pregnant or breast feeding at the day of inclusion * Smokers exceeding 15 cigarettes / day, or equivalent; patients chewing tobacco * Unable or unwilling to cooperate for the trial period * Estimated cantilever crown mesial-distal length \> 10 mm * Estimated implant crown height (from implant platform to occlusal contact points) \> 15 mm
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What it tests

  • Monolithic zirconia screw retained implant-supported cantilever reconstruction supported by titanium base abutments, in a full digital workflow (ZR-TiB)
  • porcelain fused-to metal screw retained implant-supported cantilever reconstruction supported by a gold-abutment, in a conventional workflow (PFM-GA)
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Where

1 site
University of Geneva
Geneva, Switzerland
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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