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

University of Bern35 enrolled

Overview

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.

Patients with full ceramic FDPCs in anterior and posterior areas will be clinically and radiographically re-evaluated. Mesial and distal radiographic marginal bone levels (mBLs) from baseline (i.e. delivery of FDPC) to the follow-up examination were calculated and compared between implant surfaces adjacent to and distant from the cantilever extension. Implant survival rate (%), pocket probing depth (PPD), presence/ absence of bleeding on probing (BoP) and presence/absence of mechanical/technical and biological complications were recorded.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Dental Implant Failed Prosthesis Failure Peri-Implantitis

Interventions

Implant-supported fixed dental prostheses with cantilever extensionPROCEDURE

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

Eligibility

Sex: ALLMin age: 18 YearsMax age: 99 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * 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 * 2 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) * Availability of PPD measurements (mm) taken at baseline at 4 sites/implant with a graduated Michigan periodontal probe (Deppeler SA, Rolle, Switzerland) * Availability of BoP measurements (%) (Lang et al., 1986) taken at baseline at 4 sites/implant with a graduated Michigan periodontal probe (Deppeler SA, Rolle, Switzerland). Exclusion Criteria: * 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

Locations (1)

Department of Periodontology, University of Bern

Bern, Switzerland

Outcomes

Primary Outcomes

Implant survival rate

Percentage of dental implants present at follow-up visit

Time frame: 12 months

Secondary Outcomes

Peri-implant marginal bone level changes

Time frame: 12 months

Number of technical complications

Time frame: 12 months

Number of mechanical complications

Time frame: 12 months

Number of Biological complications

Time frame: 12 months

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.