Implant-supported Fixed Dental Prostheses (FDPs) With Cantilever Extension

NCT05676268 | Completed

• 1 other identifier: FDPs with cantilever
• Study Type: observational
• Target: 35
• Locations: 1 country
• Sites: 1

Brief Summary

To report the clinical and radiographic outcomes of implant-supported fixed dental prostheses with full-ceramic cantilever extensions (FDPCs) after a function time ≥ 12 months.

Conditions

Dental Implant Failed; Prosthesis Failure; Peri-Implantitis

Outcome Measures

Primary Outcomes (1)

• Implant survival rate

  Percentage of dental implants present at follow-up visit

  12 months

Secondary Outcomes (4)

• Peri-implant marginal bone level changes

  12 months

• Number of technical complications

  12 months

• Number of mechanical complications

  12 months

• Number of Biological complications

  12 months

Study Arms (1)

Patients with oral implants supporting full ceramic fixed dental prostheses

Procedure: Implant-supported fixed dental prostheses with cantilever extension

Interventions

Implant-supported fixed dental prostheses with cantilever extension PROCEDURE

Healthy patients in need of replacement of missing teeth with dental implants supporting partial fixed dental prostheses with cantilever extensions

Patients with oral implants supporting full ceramic fixed dental prostheses

Eligibility Criteria

• Age: 18 Years - 99 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients with missing teeth rehabilitated with dental implants supporting partial fixed dental prostheses with cantilever extensions

You may qualify if:

• Patients aged ≥18 years
• Written informed consent
• Patients with systemic health or controlled medical conditions
• Patients with healthy or treated periodontal conditions
• Patients enrolled in regular supportive periodontal therapy (SPT)
• Patients without clinical signs of bruxism and/or oral parafunctions
• osseointegrated dental implants in the canine or posterior areas of maxilla and mandible following transmucosal placement and healing of 3-6 months
• Tissue level solid-screw implants with a sand-blasted and acid- etched (SLA) surface with an endosseous diameter of 3.3, 4.1 or 4.8 mm, a length of 8, 10 or 12 mm, a shoulder diameter of 4.8 mm and a supracrestal machined neck with a height of 1.8 or 2.8 mm (Straumann® Dental Implant System, Institut Straumann AG, Basel, Switzerland)
• Full-ceramic
• Utilization of prefabricated titanium abutments
• Cemented (3M™ ESPE Ketac™ Cem, Seefeld, Germany) or screw-retained fixed dental prostheses with a mesial or distal cantilever extension (FDPCs)
• Cantilever extension corresponding to 1 premolar unit (i.e., 6-7 mm)
• Absence of occlusal contacts or guidance on the cantilever extension at baseline
• Opposing dentition consisting of natural teeth or fixed or removable prosthetic restorations
• Availability of a periapical radiograph at baseline (i.e. FDPC delivery)

You may not qualify if:

• Untreated or active periodontal diseases
• Immediate implant placement (i.e., Type I implant placement according to Hämmerle et al., 2004)
• FDPCs in the aesthetic zone (i.e., replacement of maxillary or mandibular incisors)
• FDPCs supported by hollow-screw and hollow-cylinder implants

Sponsors & Collaborators

• University of Bern: lead

Study Sites (1)

Department of Periodontology, University of Bern

Bern, 3010, Switzerland

Location

MeSH Terms

Conditions

Prosthesis Failure; Peri-Implantitis

Condition Hierarchy (Ancestors)

Postoperative Complications; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Periodontal Diseases; Mouth Diseases; Stomatognathic Diseases

Study Officials

• Andrea Roccuzzo

  University of Bern

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: December 22, 2022
• First Posted: January 9, 2023
• Study Start: January 2, 2023
• Primary Completion: September 30, 2023
• Study Completion: December 31, 2023
• Last Updated: January 22, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share

Locations

CH (1)