Clinical and Radiographic Outcomes of Implant-supported Prostheses With Cantilever Extensions After 10 Years of Function (Cantilevers)

August 6, 2024 updated by: Aristotle University Of Thessaloniki

Clinical and Radiographic Outcomes of Implant-supported Prostheses With Cantilever Extensions. A Retrospective Study With a Follow-up of at Least 10 Years.

A retrospective examination was performed on patients who had received treatment with dental implants supporting a prosthesis with a cantilever extension for at least 10 years of function.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The successful use of osseointegrated dental implants in replacing missing teeth has been adequately documented, with multiple studies reporting long-term success exceeding 10 years of function. However, there is still insufficient evidence in cases where availability of adequate bone precludes ideal placement of implants. Examples of cases like these include the posterior maxilla when pneumatization of the maxillary sinus does not allow for placement of implants, or areas of thin bone that would require extensive guided bone regeneration (GBR) techniques and increase patient morbidity. In such cases the use of fixed dental prostheses (FDPC's) with cantilever extension has been suggested in lieu of sinus lift techniques or GBR procedures. However, few studies have actually addressed the long-term success of such FDPC's, both from a surgical and a prosthetic standpoint, especially in posterior areas of the mandible and maxilla where loading forces are expected to be higher.

Two studies addressed this issue in the early 2000's with successful outcomes reported for an observation period of 5 years. Others reported similar outcomes after a mean observation period of 5.6 years. The 5th Consensus Conference of the European Association of Osseointegration (EAO) suggested that such treatment can be recommended to patients, albeit with little available evidence and limited follow-up of cases. Recent studies have delved further into this issue, offering longer follow-up data of more than 10 years of function. They included both 2 unit FDP's anchored on one implant and 3 unit FDP's anchored on two implants with cantilever extensions. They concluded that this treatment modality is a reliable option with long-term stability and few complications, mainly prosthetic.

The aim of this retrospective study is to offer further data on the long-term success and complications when at least two dental implants are used to support a FDPC in the posterior areas of both jaws, after at least 10 years of function.

Study Type

Observational

Enrollment (Actual)

19

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Greece
    • Thessaloniki
      • Thessaloníki, Thessaloniki, Greece, 54124
        • Aristotle University of Thessaloniki, School of Dentistry

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The patient sample of this study is part of a retrospective evaluation of patients who received treatment with dental implants in a private periodontal practice environment between 2000 and 2013, with at least 10 years of functional loading of their prosthetic work. Patients who received Fixed Dental Prostheses with Cantilever Extension were included in this study sample

Description

The inclusion criteria were as follows:

  • Age 18 years and over
  • Systemic health or controlled medical conditions
  • Periodontal health, either no periodontal disease, or previously treated periodontal disease and under a supportive periodontal maintenance (SPT) program
  • Smokers were included but encouraged to enter a smoking cessation program
  • Patients with bruxism or parafunctional habits were included.

The exclusion criteria were as follows:

  • Uncontrolled medical conditions
  • Active uncontrolled periodontal disease
  • Inability to present for the reevaluation appointment
  • Immediate implant placement
  • Cantilever units that were part of full-arch restorations
  • Cantilever units that were connected to a single implant
  • Non-existent opposing dentition

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean bone loss
Time Frame: 10 years at least
Mean bone loss measured from the difference of the bone levels at time of implant placement compared to the time of examination
10 years at least

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean Probing Depth
Time Frame: 10 years at least
The average probing depth at the time of examination at each implant site
10 years at least
Biologic complications
Time Frame: 10 years at least
Recording of biologic complications around implants (health, peri-implant mucositis, peri-implantitis
10 years at least
Technical complications
Time Frame: 10 years at least
Recording of prosthetic complications encountered at the dental prostheses with cantilever extensions
10 years at least

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Aristotle University Of Thessaloniki

Investigators

  • Study Chair: Ioannis Vouros, DDS, PhD, Professor of Periodontology

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2024

Primary Completion (Actual)

July 30, 2024

Study Completion (Actual)

July 30, 2024

Study Registration Dates

First Submitted

July 30, 2024

First Submitted That Met QC Criteria

July 30, 2024

First Posted (Actual)

August 2, 2024

Study Record Updates

Last Update Posted (Actual)

August 7, 2024

Last Update Submitted That Met QC Criteria

August 6, 2024

Last Verified

August 1, 2024

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • Cantilever implants

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Dental Implants

Clinical Trials on Dental implant prosthesis with cantilever extension

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Germany

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe