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Questions and Answers
What is the most common material used in fixed prosthodontics for crown restorations?
Which type of cement is water-based and commonly used in fixed prosthodontics?
Which type of alloy falls under the category of High Noble Alloys in dental alloy classification?
What is the predominant material used in Polymer-infiltrated ceramic networks (PICN) for fixed prosthodontics?
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Which type of cement is self-curing and commonly used in fixed prosthodontics?
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What type of alloy falls under the ADA dental alloy classification with a content of gold and platinum group below 25%?
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Which type of ceramics provides the highest translucency and esthetics for crown restorations in fixed prosthodontics?
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Which type of crown is suitable for heavy occlusal forces, worn-down dentitions, eccentric interferences, and lack of inter-occlusal space?
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Which type of crown is specifically suitable for FDPs, shade matching, and verification with copings?
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What is the main advantage of feldspathic CA S E S porcelain in fixed prosthodontics?
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What is a common disadvantage of feldspathic CA S E S porcelain (resin-based) in fixed prosthodontics?
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Which type of crown has reduced sensitivity to moisture and is esthetic, but has the disadvantage of shade matching sensitivity?
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What is a key feature of picn (polymer-infiltrated ceramic networks) in fixed prosthodontics?
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Which temporary restorative material is known for its slight antimicrobial activity due to zinc oxide powder?
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Which cement may require 'cold plate' usage to control setting time?
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Which cement type provides adhesive properties, biocompatibility, and durability but can degrade in moisture over time?
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Which cement type is known for its ability to bond and release fluoride?
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Which cement type is a hybrid of glass particles and light curable resin?
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Which cement type offers controlled polymerization, versatility, and reduced sensitivity to light?
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Which cement type has polymerization shrinkage and potential sensitivity to moisture?
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Which type of alloy is primarily made of gold and platinum-group metals?
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What is the yield strength requirement for multiple-unit prostheses like bridges?
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Which type of alloy features a passive oxide layer for corrosion resistance?
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What is crucial for successful bonding between metal alloys and ceramics?
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Which method involves surface energy and mechanical interdigitation for attaching metal-ceramics?
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Which dental ceramic is known for its compatibility with various ceramics due to its low coefficient of linear thermal expansion (CTE)?
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Which type of ceramic material offers increased translucency and improved flexural strength for single and multi-unit restorations?
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Which temporary cement is known for its biocompatibility, antimicrobial properties, and ease of manipulation?
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Which type of cement is TempBond NE?
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Which type of material combines the advantages of polymeric properties and the chemical stability of ceramics?
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What are the limitations of polymer-infiltrated ceramic networks (PICN) compared to glass ceramics?
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Which material offers translucency, crack resistance, and light weight, but may have limited long-term data and abrasiveness?
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What are the popular types of dental luting cements used for temporary and permanent restorations?
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What are the properties of Vita Enamic?
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Which material is the first all-ceramic restoration, primarily containing silicon dioxide, made from natural feldspars, and possessing a glassy matrix and a crystalline phase?
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What is the toughening mechanism of crack deflection in Leucite-reinforced glass ceramics?
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Which type of glass ceramics is used in Ivoclar Vivadent's IPS e.max CAD, offering a biaxial flexural strength of 450-550 MPa?
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What is the primary reinforcing material in Zirconia-reinforced lithium silicate glass-ceramics?
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Which type of ceramics have different properties such as translucency, esthetics, and strength, making them suitable for different applications in dental restorations?
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What is the flexural strength of Leucite-reinforced glass ceramics used in Ivoclar Vivadent's IPS Empress CAD?
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Which type of ceramics requires significant enamel remains and thin thickness (0.2-0.3mm)?
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What is the main component of Feldspathic CA SES porcelain?
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What primarily affects the bond strength of glass ceramics to resin cements?
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What is the biaxial flexural strength of Zirconia-reinforced lithium silicate glass-ceramics such as Vita Suprinity and Vita Zahnfabrik's offerings?
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Study Notes
- max, Ivoclar Vivadent and Dentsply are key companies in the dental industry.
- Feldspathic CA SES porcelain is the first all-ceramic restoration, primarily containing silicon dioxide, made from natural feldspars, and possessing a glassy matrix and a crystalline phase.
- Feldspathic porcelain is highly translucent and esthetic, but requires significant enamel remains and thin thickness (0.2-0.3mm).
- Glass ceramics are used extensively in fixed prosthodontics, with a crystalline phase and a glassy phase, which affects their bond strength to resin cements.
- Leucite-reinforced glass ceramics, such as those used in Ivoclar Vivadent's IPS Empress CAD, have leucite crystals (35-45% vol) and a toughening mechanism of crack deflection, resulting in a flexural strength of 160 MPa.
- Lithium-disilicate reinforced glass ceramics, such as those used in Ivoclar Vivadent's IPS e.max CAD, have lithium disilicate crystals (65% vol) and significant reinforcement, resulting in a biaxial flexural strength of 450-550 MPa.
- Zirconia-reinforced lithium silicate glass-ceramics, such as Vita Suprinity and Vita Zahnfabrik's offerings, have lithium silicate and zirconium dioxide, resulting in a biaxial flexural strength of 540 MPa.
- These various types of ceramics have different properties, such as translucency, esthetics, and strength, making them suitable for different applications in dental restorations.
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Description
Test your knowledge on the material science used in fixed prosthodontics, focusing on highly aesthetic and natural appearance, biocompatibility, durability, versatility, adhesive strength, and other important factors. Photo by Aaron Spray.
