Posterior CAD/CAM Cobalt-chromium Alloy Single Crowns: 4-year Prospective Clinical Study
NCT ID: NCT02956174
Last Updated: 2016-11-08
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
89 participants
INTERVENTIONAL
2012-05-31
Brief Summary
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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
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Conditions
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Study Design
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NON_RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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Co-Cr single crown
Co-Cr single crown
Co-Cr single crown
Periodontal parameters
Contralateral sound tooth
Contralateral sound tooth
Periodontal parameters
Interventions
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Co-Cr single crown
Periodontal parameters
Eligibility Criteria
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Inclusion Criteria
* American Society of Anesthesiologists (ASA) ASA I or ASA II condition; periodontal health
* Angle class I occlusal relationship
* minimum of 10 couples of opponent teeth
* good oral hygiene
* no evident signs of parafunctions and/or temporomandibular disorders.
* periodontal health of abutment teeth (absence of tooth mobility, absence of furcation involvement);
* proper positioning of abutment teeth in the dental arch (tooth axis adequate for a SC)
* sufficient occlusal-cervical height of the clinical crown of abutment teeth (≥ 4 mm) for the retention of a SC
* vital or endodontically treated to a clinically sound state abutment teeth;
* abutment teeth opposing natural teeth.
Exclusion Criteria
* presence of periodontal disease on the abutment tooth
* occlusal-cervical height of the abutment tooth \< 4 mm
* reduced interocclusal distance or supraerupted opposing teeth
* unfavorable crown-to-root ratio
* severe were facets, clenching and/or bruxism
* presence of removable partial dentures (RPDs)
* pregnancy or lactation
* alcohol and/or drug addiction
21 Years
68 Years
ALL
No
Sponsors
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Federico II University
OTHER
Responsible Party
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Fernando Zarone
Full Professor
Other Identifiers
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FZ_Co-Cr_2016
Identifier Type: -
Identifier Source: org_study_id