NCT02272491

Monolithic Zirconia Crowns for Single Implants in the Molar Region: a Multicenter Clinical Trial

Monolithic Zirconia Crowns for Single Implants in the Molar Region: a Randomized Controlled Clinical Trial

• Status: Active Not Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 83 (actual)
• Sponsor: University of Zurich · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

The aim of the present study is to test whether or not the use of translucent monolithic zirconia crowns bonded to a titanium base abutment perform similar to porcelain-fused-to-metal crowns on single implants in the posterior region.

Detailed description

In the majority of studies on implant-supported restorations, a considerable rate of fractures of the veneering ceramic was reported. The clinical data is restricted to full-ceramic implant-supported reconstructions in the anterior region. No clinical data is available on the performance of full-ceramic restorations in the molar region. The use of translucent monolithic zirconia for implant-supported crowns (without veneering ceramic) may reduce the technical complication rate and allow for sufficient aesthetic results in the molar region. To date, no clinical trial investigating monolithic zirconia crowns for single molar implants is available. The primary outcome of the study is the technical complication rate. This outcome represents an indicator for the prosthetic success of the implant-supported crown. The main biological secondary outcomes are marginal bone level, histological signs of inflammation, and presence of pathogenic bacteria. Further outcomes are crown survival, wear of the crown and of the antagonist.

Conditions

• Implant-supported Single Crowns

Interventions

Type	Name	Description
DEVICE	ZrO2 (Straumann CARES)	1. Straumann CARES Variobase Abutment RN 2. Straumann CARES Full Contour Zerion HT The monolithic zircona crown (2) will be bonded to the titanium base (1)
DEVICE	PFM crown (Straumann Gold)	Porcelain-fused-to-metal crown consisting of a gold abutment, a gold core, and veneering ceramic

Timeline

• Start date: 2014-10-01
• Primary completion: 2022-11-25
• Completion: 2027-11-01
• First posted: 2014-10-23
• Last updated: 2023-05-15

Locations

1 site across 1 country: Switzerland