Zirconia Based Fixed Dental Prostheses

Not Applicable

Completed

• Conditions: Zirconia Based Fixed Dental Prostheses
• Interventions: Device: Implant abutments; Device: Teeth abutment

• Registration Number: NCT02220764
• Lead Sponsor: Technische Universität Dresden

Brief Summary

The objective of this prospective clinical study is to investigate the differences in the complication rates between tooth- and implant- supported zirconia based fixed dental prostheses (FDPs) with at least 4 units. The null-hypothesis is that there is no difference in the complication rates between implant- supported and tooth- supported zirconia FDPs.

Detailed Description

The study aims to provide evidence regarding the clinical behaviour of long-span tooth- and implant-supported FDPs.

Study Timeline

• Study Start: 2008-05
• Primary Completion: 2013-11
• Study Completion: 2013-12
• Study First Submitted: 2014-07-16
• Study First Submitted QC: 2014-08-19
• Study First Posted: 2014-08-20
• Status Verified: 2015-03
• Results First Submitted: 2015-03-04
• Results First Submitted QC: 2015-03-23
• Last Update Submitted: 2015-03-23
• Results First Posted: 2015-03-24
• Last Update Posted: 2015-03-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 32

Inclusion Criteria

• Patients older than 18 years
• Missing of at least two adjacent teeth in the maxilla or mandibular
• Sufficient oral hygiene

Exclusion Criteria

• Addiction to alcohol or drugs
• Severe craniomandibular disorders
• Severe systematic diseases
• Patients unable or unwilling to sign the informed consent form
• Untreated periodontitis

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Implant-supported	Implant abutments	Long-span implant-supported zirconia based fixed dental prostheses
Tooth-supported	Teeth abutment	Long-span tooth-supported zirconia based fixed dental prostheses

Primary Outcome Measures

Name	Time	Method
Number of Fixed Dental Prostheses (FDPs) With Failure	3 years	"Failure" was recorded if there was a need to remove the Fixed Dental Prosthesis over the observation period.

Secondary Outcome Measures

Name	Time	Method
Number of Fixed Dental Prostheses (FDPs) With Chip/s	3 years	Measurement of the amount of fractures of the veneering material 6,12,18,24,30 and 36 months after placement of the restorations. The percentage of chips for the implant- and tooth- supported restorations will be reported.