Abstract
This study evaluated the vertical discrepancy of implant-fixed 3-unit structures. Frameworks were constructed with laser-sintered Co-Cr, and vacuum-cast Co-Cr, Ni-Cr-Ti, and Pd-Au. Samples of each alloy group were randomly luted in standard fashion using resin-modified glass-ionomer, self-adhesive, and acrylic/urethane-based cements (n = 12 each). Discrepancies were SEM analyzed. Three-way ANOVA and Student-Newman-Keuls tests were run (P < 0.05). Laser-sintered structures achieved the best fit per cement tested. Within each alloy group, resin-modified glass-ionomer and acrylic/urethane-based cements produced comparably lower discrepancies than the self-adhesive agent. The abutment position did not yield significant differences. All misfit values could be considered clinically acceptable.
Publication types
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Comparative Study
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Randomized Controlled Trial
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Research Support, Non-U.S. Gov't
MeSH terms
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Acrylic Resins / chemistry
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Alloys / chemistry
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Cementation / methods*
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Chromium Alloys / chemistry
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Dental Casting Technique*
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Dental Implant-Abutment Design
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Dental Implants
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Dental Marginal Adaptation*
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Dental Materials / chemistry
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Dental Prosthesis, Implant-Supported*
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Dental Soldering / methods*
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Denture Design*
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Denture Retention*
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Denture, Partial, Fixed
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Glass Ionomer Cements / chemistry
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Gold Alloys / chemistry
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Humans
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Image Processing, Computer-Assisted / methods
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Lasers*
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Methacrylates / chemistry
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Microscopy, Electron, Scanning
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Palladium / chemistry
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Polyurethanes / chemistry
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Resin Cements / chemistry
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Surface Properties
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Titanium / chemistry
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Vacuum
Substances
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Acrylic Resins
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Alloys
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Chromium Alloys
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Dental Implants
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Dental Materials
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Glass Ionomer Cements
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Gold Alloys
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Methacrylates
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Polyurethanes
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Resin Cements
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urethane dimethacrylate luting resin
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nitinol
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Palladium
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Titanium