Posterior CAD/CAM Cobalt-chromium Alloy Single Crowns: 4-year Prospective Clinical Study

Not Applicable

Completed

• Conditions: Single Tooth Lost

• Registration Number: NCT02956174
• Lead Sponsor: Federico II University

Brief Summary

Objectives - To evaluate the 4-year clinical outcomes of ceramic veneered Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) Co-Cr single crowns supported by natural teeth in posterior regions.

Material and methods - Eighty-nine patients were provided with 120 ceramic veneered CAD/CAM Co-Cr single crowns replacing either premolars and molars. Specific inclusion criteria were needed and tooth preparations were standardized and performed by 2 expert prosthodontists. CAD/CAM Co-Cr frameworks were fabricated and veneered with ceramics. The restorations were cemented using a eugenol-free zinc oxide luting agent. The patients were recalled after 1, 6, 12, 24, 36 and 48 months. The survival and success of the restorations were evaluated. The technical and esthetic outcomes were examined using the United States Public Health Service criteria. The biologic outcomes were analyzed at abutment and contralateral teeth and descriptive statistics were performed.

Detailed Description

Not available

Study Timeline

• Study Start: 2012-05
• Primary Completion: 2016-07
• Study First Submitted: 2016-10-30
• Status Verified: 2016-11
• Study First Submitted QC: 2016-11-04
• Last Update Submitted: 2016-11-05
• Study First Posted: 2016-11-06
• Last Update Posted: 2016-11-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 89

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Survival percentage	4 years	Kaplan Meier analysis of survival of the prostheses