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Marginal fit of machine-milled titanium and cast titanium single crowns. 1994

D Leong, and J Chai, and E Lautenschlager, and J Gilbert
Northwestern University Dental School, Chicago, Illinois.

Eighteen type IV dental stone dies were fabricated from a metal master die that replicated a tooth prepared to receive a metal ceramic crown. They were divided into three groups according to the type of crowns to be made: (a) machine-milled, spark-eroded titanium crowns (Procera); (b) cast titanium crowns; and (c) noble alloy crowns (as the control). The control specimens showed the smallest mean marginal openings at 25 microns and were significantly different from both the machine-milled crowns (54 microns) and the cast titanium crowns (60 microns). The two types of titanium crowns were not significantly different from each other.

UI MeSH Term Description Entries
D003442 Crowns A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin. Dental Crowns,Crown, Dental,Crowns, Dental,Dental Crown,Crown
D003735 Dental Casting Technique The process of producing a form or impression made of metal or plaster using a mold. Casting Technic, Dental,Casting Technics, Dental,Casting Technique, Dental,Casting Techniques, Dental,Dental Casting Technic,Dental Casting Technics,Dental Casting Techniques,Technic, Dental Casting,Technics, Dental Casting,Technique, Dental Casting,Techniques, Dental Casting
D003775 Dental Polishing Creation of a smooth and glossy surface finish on a denture or amalgam. Dental Burnishing,Dental Finishing,Burnishing, Dental,Finishing, Dental,Polishing, Dental
D006047 Gold Alloys Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry. Gold Alloy,Alloy, Gold,Alloys, Gold
D000704 Analysis of Variance A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable. ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D014025 Titanium A dark-gray, metallic element of widespread distribution but occurring in small amounts with atomic number, 22, atomic weight, 47.867 and symbol, Ti; specific gravity, 4.5; used for fixation of fractures.
D016876 Metal Ceramic Alloys The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys. Metal Ceramic Restorations,Metallo-Ceramic Alloys,Porcelain-Metal Alloys,Metal Ceramic Alloy,Metallo-Ceramic Alloy,Metalloceramic Alloy,Metalloceramic Alloys,Alloy, Metal Ceramic,Alloy, Metallo-Ceramic,Alloy, Metalloceramic,Alloys, Metal Ceramic,Alloys, Metallo-Ceramic,Alloys, Metalloceramic,Alloys, Porcelain-Metal,Metallo Ceramic Alloy,Metallo Ceramic Alloys,Porcelain Metal Alloys,Restorations, Metal Ceramic
D018772 Dental Marginal Adaptation The degree of approximation or fit of filling material or dental prosthetic to the tooth surface. A close marginal adaptation and seal at the interface is important for successful dental restorations. Adaptation, Marginal, Dental,Marginal Adaptation, Dental,Dental Internal Adaptation,Dental Internal Fit,Adaptation, Dental Internal,Adaptation, Dental Marginal,Adaptations, Dental Internal,Adaptations, Dental Marginal,Dental Internal Adaptations,Dental Internal Fits,Dental Marginal Adaptations,Fit, Dental Internal,Fits, Dental Internal,Internal Adaptation, Dental,Internal Adaptations, Dental,Internal Fit, Dental,Internal Fits, Dental,Marginal Adaptations, Dental

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