Synthetic Gypsum: A Sustainable Alternative
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Synthetic Gypsum, or SynGyp is a manufactured form of gypsum. The most common form of synthetic gypsum is produced as a by-product of fossil-fueled power plants. This presentation looks at what synthetic gypsum is, how it came to be, and the benefits it has to offer.
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This document discusses impression compound, which is a rigid, reversible impression material that sets by physical change. It is classified as a type 1 or 2 material and is composed mainly of thermoplastic resins, waxes and fillers. Impression compound is softened in warm water before being loaded into a tray and placed in the mouth to make impressions. It has a fusion temperature range of 39-43.5°C and poor thermal conductivity, requiring complete cooling before removal. While re-usable, it can compress tissues and have dimensional instability issues.
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This document provides information on various types of waxes used in dentistry. It discusses the composition, properties, and uses of pattern waxes, casting waxes, baseplate waxes, sticky waxes, and disclosing waxes. The key properties of waxes discussed are their melting ranges, coefficients of thermal expansion, flow, and residual stresses. Methods for manipulating waxes include using heat sources like Bunsen burners, wax annealers, and infrared lamps. Wax patterns can be made using direct or indirect techniques.
Hydrocolloid impression materials
hydrocolloid impression materials, agar and alginate impression materials and properties of the same.
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https://youtu.be/aaJ6gpQohcs
https://youtu.be/REMKSUty0cE
https://youtu.be/fv3_tWZPJIU
https://youtu.be/GeZIbCwqKYU
if you want me to make any ppt on any more topic do let me know on my youtube channel's comment section
Gypsum products
This document discusses different types of gypsum products used in dentistry, including dental plaster, stone, and improved stone. It describes the differences between these products in terms of their crystal structure, density, strength, and setting properties. Dental plaster is the most porous and weakest, while improved stone has the densest and strongest crystals. The document also explains how the setting times and strengths of gypsum products can be modified by adjusting the water-powder ratio or adding chemicals during mixing.
Gypsum products
This document provides an overview of gypsum products used in dentistry. It discusses 5 types of gypsum classified by the ADA based on their properties and uses. Type I is impression plaster, Type II is dental plaster for models, Type III is dental stone for models with greater strength, Type IV is die stone with low expansion for dies, and Type V is die stone with high expansion. It also covers the manufacture, setting reaction, factors that affect setting time, properties of gypsum products like setting expansion and strength, and care and infection control of gypsum.
Compression Molding Technique.pptx
Compression molding technique is used to mold heat-activated denture base resins into a confined shape under pressure and heat. It involves preparing a mold, applying a separating medium, mixing the proper polymer-monomer ratio, and packing the resin mixture into the mold cavity. The resin is then compressed under pressure and heat to cure. Key steps include embedding a master cast in stone, exposing the teeth, fully flasking the denture, separating the flask, applying a separating medium, properly mixing and packing the resin into the mold cavity, applying pressure, removing excess material, and transferring the flask to a curing unit under continued pressure.
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This document discusses impression compound, which is a rigid, reversible impression material that sets by physical change. It is classified as a type 1 or 2 material and is composed mainly of thermoplastic resins, waxes and fillers. Impression compound is softened in warm water before being loaded into a tray and placed in the mouth to make impressions. It has a fusion temperature range of 39-43.5°C and poor thermal conductivity, requiring complete cooling before removal. While re-usable, it can compress tissues and have dimensional instability issues.
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This document provides information on various types of waxes used in dentistry. It discusses the composition, properties, and uses of pattern waxes, casting waxes, baseplate waxes, sticky waxes, and disclosing waxes. The key properties of waxes discussed are their melting ranges, coefficients of thermal expansion, flow, and residual stresses. Methods for manipulating waxes include using heat sources like Bunsen burners, wax annealers, and infrared lamps. Wax patterns can be made using direct or indirect techniques.
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Gypsum products
This document discusses different types of gypsum products used in dentistry, including dental plaster, stone, and improved stone. It describes the differences between these products in terms of their crystal structure, density, strength, and setting properties. Dental plaster is the most porous and weakest, while improved stone has the densest and strongest crystals. The document also explains how the setting times and strengths of gypsum products can be modified by adjusting the water-powder ratio or adding chemicals during mixing.
Gypsum products
This document provides an overview of gypsum products used in dentistry. It discusses 5 types of gypsum classified by the ADA based on their properties and uses. Type I is impression plaster, Type II is dental plaster for models, Type III is dental stone for models with greater strength, Type IV is die stone with low expansion for dies, and Type V is die stone with high expansion. It also covers the manufacture, setting reaction, factors that affect setting time, properties of gypsum products like setting expansion and strength, and care and infection control of gypsum.
Compression Molding Technique.pptx
Compression molding technique is used to mold heat-activated denture base resins into a confined shape under pressure and heat. It involves preparing a mold, applying a separating medium, mixing the proper polymer-monomer ratio, and packing the resin mixture into the mold cavity. The resin is then compressed under pressure and heat to cure. Key steps include embedding a master cast in stone, exposing the teeth, fully flasking the denture, separating the flask, applying a separating medium, properly mixing and packing the resin into the mold cavity, applying pressure, removing excess material, and transferring the flask to a curing unit under continued pressure.
gypsum
Gypsum is a mineral composed of calcium sulfate dihydrate that is used to produce several dental products, including plaster, dental stone, and die stone. These products differ in their physical properties based on how they are manufactured but have the same chemical structure. Plaster is produced by direct heating of gypsum powder, resulting in an irregular porous structure. Dental stone involves controlled calcination under steam pressure, producing stronger and more uniform particles. Die stone undergoes additional processing to form very dense cuboidal crystals and strong dies. The setting process involves the hydration of calcium sulfate hemihydrate back to calcium sulfate dihydrate, with crystal growth linking the particles. The water-powder ratio affects properties, with plaster requiring more water
Amalgam
This document discusses the history, composition, production, and properties of dental amalgam. It begins with a brief history of amalgam use in dentistry dating back to the 1800s. It then discusses the components of amalgam alloys including mercury, silver, tin, and copper. The document outlines the production methods for lathe-cut and spherical alloy powders. It describes the metallurgical phases that form during amalgamation and how they contribute to properties like strength, creep, corrosion resistance and dimensional stability. Overall, the document provides a comprehensive overview of dental amalgam materials.
Dental casting investment material
Investment materials are used to form molds for dental casting. They are composed of refractory materials like quartz or cristobalite, a binder like gypsum or phosphate, and other chemicals. Gypsum-bonded investments are commonly used for gold alloy casting while phosphate-bonded investments can withstand higher temperatures for casting alloys like cobalt-chromium. Ethyl silicate investments are used for high-fusing base metal alloys. The investments require properties like stability at high temperatures, sufficient expansion to compensate for metal shrinkage, and ease of removal after casting.
Waxes in dentistry
This document discusses various types of waxes used in dentistry, their compositions, properties, and applications. It covers natural waxes like beeswax, paraffin wax, and carnauba wax as well as synthetic waxes. Key waxes discussed include inlay pattern wax, casting wax, and baseplate wax. Inlay pattern wax is a blend designed to have good flow properties at mouth temperature as well as dimensional stability when solidified. Casting wax is used to make patterns for crowns and bridges and must vaporize completely during the burnout process. Baseplate wax is pink-colored and formulated to be soft enough to establish jaw relations during initial denture fabrication.
Gypsum Products
This document provides an overview of gypsum products used in dentistry. It discusses the properties and manufacturing of various types of gypsum, including plaster, dental stone, die stone. It describes how gypsum sets through a hydration reaction and how factors like water-powder ratio, temperature, and additives can control the setting time. The document also outlines the uses of different gypsum products for impressions, models, dies and other dental applications.
luting cement
This document provides information about various luting cements used in dentistry. It focuses on zinc phosphate cement, discussing its composition, setting reaction, properties and applications. The key points are:
1. Zinc phosphate cement is the oldest luting agent and consists of a powder made primarily of zinc oxide and a liquid of phosphoric acid. The acid reacts with zinc oxide to form zinc phosphate during setting.
2. It has a working time of 1.5-2 minutes and setting time of 2.5-8 minutes. Its compressive strength is 104MPa and it bonds mechanically rather than chemically.
3. Zinc phosphate cement is used for cementing permanent restorations
Dental cements
This document provides an overview of different types of dental cements, including their composition, properties, and applications. It discusses zinc phosphate cement, the oldest cement still in use today. It also covers silicate cement, one of the first direct tooth-colored materials; zinc polycarboxylate cement, the first cement with adhesive properties; and zinc oxide eugenol cement, commonly used as a temporary cement. Modified versions of these traditional cements are also presented, along with other contemporary cements like glass ionomer cement and resin cements.
Die materials used in prosthodontics
This document discusses various materials used for fabricating dental dies, including their properties and uses. It covers gypsum products like dental stone (Type III and high-strength Type IV and V stones), electroformed dies using copper or silver plating, epoxy resins, and flexible die materials like polyvinyl and polyurethane. Each material has advantages like detail reproduction, strength and disadvantages like shrinkage, toxicity or incompatibility with some impression materials. Newer ceramic and CAD/CAM die materials are also introduced that are strong and dimensionally stable.
cavity Varnish
Cavity varnish is a resin solution applied to prepared cavity walls that forms a protective film barrier between restorations and dentin. It is composed of natural or synthetic resins dissolved in solvents like alcohol or acetone, and sometimes contains fluorides or other agents. Cavity varnish is supplied in bottles and applied in thin layers to reduce sensitivity, seal dentin, and protect restorations from corrosion or dehydration. Proper application involves allowing layers to dry before adding more.
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This document provides information on gypsum and its use in dental applications. It discusses the classification, manufacture, and setting process of gypsum products used for dental casts and dies. The key points are: gypsum is calcium sulfate dihydrate that is calcined to form calcium sulfate hemihydrate for dental plasters and stones; the setting reaction involves dissolution and crystallization of the hemihydrate to reform the dihydrate; and factors like water-powder ratio, temperature, and additives can affect the setting rate.
Silicone based impression materials
Condensation silicone was the first type of silicone impression material developed. It sets via a condensation reaction at room temperature, producing an alcohol byproduct. While condensation silicones have lower cost and sufficient working time, their dimensional stability is compromised over time due to the volatile byproduct. More advanced addition silicone and polyether materials provide better accuracy due to less shrinkage.
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This document discusses gypsum products used in dentistry. It describes the production of gypsum by calcining gypsum rock or synthetic methods. There are 5 types of gypsum products defined by the American Dental Association based on their properties and uses. The document outlines the setting reactions of gypsum when mixed with water and factors that influence the setting time such as temperature, water-powder ratio, and fineness of particles. It also discusses tests used to measure initial and final setting times of gypsum.
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Casting defects in dentistry
The document discusses various casting defects that can occur in dental castings including distortion, surface roughness, porosity, incomplete casting, and discoloration. It provides detailed explanations of different types of porosity defects such as localized shrinkage porosity, microporosity, pinhole porosity, gas inclusions, subsurface porosity, and back pressure porosity. Causes and methods for prevention of each type of defect are described. Surface roughness can result from factors like air bubbles in the wax pattern, water films, temperature variations during casting, foreign bodies in the mold, and composition or application of the investment material.
Gic
Glass ionomer cement was introduced in 1970 as a tooth-colored luting and restorative material. It bonds chemically to enamel and dentine, is esthetic, and releases fluoride over time which is anticariogenic. However, glass ionomer cement is also brittle and susceptible to erosion and wear. When mixed, the acid in the liquid attacks the glass powder, releasing calcium, aluminum, and fluoride ions to cross-link with polyacrylic acid chains and form the cement matrix. The set cement has unreacted glass particles embedded in a hydrated calcium/aluminum polyacrylate gel. It is important to protect the sensitive cement from moisture during setting for 24 hours to allow full hardening.
Zinc Phosphate Cement
Zinc phosphate cement is an older luting cement that exists in two types based on grain size. It consists of zinc oxide powder and an acidic liquid containing phosphoric acid. The powder and liquid undergo an exothermic chemical reaction where the acid attacks the zinc oxide particles. This forms a zinc-aluminophosphate gel matrix. Zinc phosphate cement has good compressive strength and insulation properties but low tensile strength. It is used for luting restorations and bases due to its strength but can irritate pulp and lacks aesthetic qualities. The working time can be extended through controlling the powder-liquid ratio, mixing temperature or technique.
Composite resin
This document discusses dental composites, including their:
- History dating back to the 1940s and developments since then
- Composition of a matrix, fillers, and coupling agent
- Classification based on filler size, curing method, area of use, and generations
- Properties including strength, smoothness, and polymerization shrinkage
- Advantages such as esthetics and bond strength, as well as disadvantages like polymerization shrinkage.
Dental bases and liners
This document discusses dental base and liners. It describes their classifications, properties, and considerations for use. The main classifications discussed are varnishes, liners, sub bases, and high strength bases. Key properties addressed include thermal properties, protection against chemical insults, physical properties, and pulp reaction. Different materials are compared, including zinc oxide-eugenol, calcium hydroxide, glass ionomers, resin-modified glass ionomers, zinc phosphate, and zinc polycarboxylate. Requirements, manipulation, and indications for use are also outlined.
Investment materials
This document discusses dental casting investments, which are materials used to form molds for casting dental restorations like crowns and bridges. It describes the components of investments, including refractory materials like silica, binders like gypsum or phosphate, and modifiers. It explains the properties investments must have like strength, expansion to compensate for shrinkage, and smooth surfaces. It covers the different types of investments including gypsum-bonded, phosphate-bonded, and silica-bonded and their appropriate uses and temperature ranges. It also discusses factors that affect the investments' setting expansion to help compensate for casting shrinkage.
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Zinc oxide eugenol impression paste sets via an irreversible chemical reaction between zinc oxide and eugenol to form zinc eugenolate. It has good detail reproduction and dimensional stability but can cause a burning sensation. It is mixed in equal volumes of zinc oxide paste and eugenol paste on a mixing slab until uniformly colored, and has a working time of about 1 minute before initial set. Variations include slower-setting surgical pastes and non-eugenol pastes that avoid the burning sensation.
Arrangement of teeth in complete denture
The document discusses the history of dental prosthetics from ancient times to the present. Some key points:
- The earliest known dental prosthetics date back to ancient Egypt around 2500 BC and were made of materials like wood, bone, and ivory.
- In the 18th-19th centuries, materials like gold, vulcanite, and porcelain were introduced. George Washington's dentures were made of ivory, lead, and gold.
- In the 1930s, polymethyl methacrylate (acrylic) became popular as it was more satisfactory than previous materials.
- The document outlines the evolution of dental prosthetics materials over millennia from basic materials like wood and bone to modern acry
Common medical emergencies and their management in Dental Practice
The document outlines common medical emergencies that may occur in a dental practice setting and their management, including adrenal insufficiency, anaphylaxis, angina, asthma, cardiac arrest, choking and aspiration, epileptic seizure, hyperventilation, hypoglycemia, mild allergy, myocardial infarction, postural hypotension, stroke, and syncope. For each condition, it provides information on relevant medical history, signs and symptoms, recommended drugs and routes of administration, and general management steps.
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gypsum
Gypsum is a mineral composed of calcium sulfate dihydrate that is used to produce several dental products, including plaster, dental stone, and die stone. These products differ in their physical properties based on how they are manufactured but have the same chemical structure. Plaster is produced by direct heating of gypsum powder, resulting in an irregular porous structure. Dental stone involves controlled calcination under steam pressure, producing stronger and more uniform particles. Die stone undergoes additional processing to form very dense cuboidal crystals and strong dies. The setting process involves the hydration of calcium sulfate hemihydrate back to calcium sulfate dihydrate, with crystal growth linking the particles. The water-powder ratio affects properties, with plaster requiring more water
Amalgam
This document discusses the history, composition, production, and properties of dental amalgam. It begins with a brief history of amalgam use in dentistry dating back to the 1800s. It then discusses the components of amalgam alloys including mercury, silver, tin, and copper. The document outlines the production methods for lathe-cut and spherical alloy powders. It describes the metallurgical phases that form during amalgamation and how they contribute to properties like strength, creep, corrosion resistance and dimensional stability. Overall, the document provides a comprehensive overview of dental amalgam materials.
Dental casting investment material
Investment materials are used to form molds for dental casting. They are composed of refractory materials like quartz or cristobalite, a binder like gypsum or phosphate, and other chemicals. Gypsum-bonded investments are commonly used for gold alloy casting while phosphate-bonded investments can withstand higher temperatures for casting alloys like cobalt-chromium. Ethyl silicate investments are used for high-fusing base metal alloys. The investments require properties like stability at high temperatures, sufficient expansion to compensate for metal shrinkage, and ease of removal after casting.
Waxes in dentistry
This document discusses various types of waxes used in dentistry, their compositions, properties, and applications. It covers natural waxes like beeswax, paraffin wax, and carnauba wax as well as synthetic waxes. Key waxes discussed include inlay pattern wax, casting wax, and baseplate wax. Inlay pattern wax is a blend designed to have good flow properties at mouth temperature as well as dimensional stability when solidified. Casting wax is used to make patterns for crowns and bridges and must vaporize completely during the burnout process. Baseplate wax is pink-colored and formulated to be soft enough to establish jaw relations during initial denture fabrication.
Gypsum Products
This document provides an overview of gypsum products used in dentistry. It discusses the properties and manufacturing of various types of gypsum, including plaster, dental stone, die stone. It describes how gypsum sets through a hydration reaction and how factors like water-powder ratio, temperature, and additives can control the setting time. The document also outlines the uses of different gypsum products for impressions, models, dies and other dental applications.
luting cement
This document provides information about various luting cements used in dentistry. It focuses on zinc phosphate cement, discussing its composition, setting reaction, properties and applications. The key points are:
1. Zinc phosphate cement is the oldest luting agent and consists of a powder made primarily of zinc oxide and a liquid of phosphoric acid. The acid reacts with zinc oxide to form zinc phosphate during setting.
2. It has a working time of 1.5-2 minutes and setting time of 2.5-8 minutes. Its compressive strength is 104MPa and it bonds mechanically rather than chemically.
3. Zinc phosphate cement is used for cementing permanent restorations
Dental cements
This document provides an overview of different types of dental cements, including their composition, properties, and applications. It discusses zinc phosphate cement, the oldest cement still in use today. It also covers silicate cement, one of the first direct tooth-colored materials; zinc polycarboxylate cement, the first cement with adhesive properties; and zinc oxide eugenol cement, commonly used as a temporary cement. Modified versions of these traditional cements are also presented, along with other contemporary cements like glass ionomer cement and resin cements.
Die materials used in prosthodontics
This document discusses various materials used for fabricating dental dies, including their properties and uses. It covers gypsum products like dental stone (Type III and high-strength Type IV and V stones), electroformed dies using copper or silver plating, epoxy resins, and flexible die materials like polyvinyl and polyurethane. Each material has advantages like detail reproduction, strength and disadvantages like shrinkage, toxicity or incompatibility with some impression materials. Newer ceramic and CAD/CAM die materials are also introduced that are strong and dimensionally stable.
cavity Varnish
Cavity varnish is a resin solution applied to prepared cavity walls that forms a protective film barrier between restorations and dentin. It is composed of natural or synthetic resins dissolved in solvents like alcohol or acetone, and sometimes contains fluorides or other agents. Cavity varnish is supplied in bottles and applied in thin layers to reduce sensitivity, seal dentin, and protect restorations from corrosion or dehydration. Proper application involves allowing layers to dry before adding more.
Gypsum and gypsum products
This document provides information on gypsum and its use in dental applications. It discusses the classification, manufacture, and setting process of gypsum products used for dental casts and dies. The key points are: gypsum is calcium sulfate dihydrate that is calcined to form calcium sulfate hemihydrate for dental plasters and stones; the setting reaction involves dissolution and crystallization of the hemihydrate to reform the dihydrate; and factors like water-powder ratio, temperature, and additives can affect the setting rate.
Silicone based impression materials
Condensation silicone was the first type of silicone impression material developed. It sets via a condensation reaction at room temperature, producing an alcohol byproduct. While condensation silicones have lower cost and sufficient working time, their dimensional stability is compromised over time due to the volatile byproduct. More advanced addition silicone and polyether materials provide better accuracy due to less shrinkage.
Gypsum Products
This document discusses gypsum products used in dentistry. It describes the production of gypsum by calcining gypsum rock or synthetic methods. There are 5 types of gypsum products defined by the American Dental Association based on their properties and uses. The document outlines the setting reactions of gypsum when mixed with water and factors that influence the setting time such as temperature, water-powder ratio, and fineness of particles. It also discusses tests used to measure initial and final setting times of gypsum.
impression materials and recent advances
Various types of impression materials, their compositions, uses, advantages and disadvantages along with recent advances explained.
Casting defects in dentistry
The document discusses various casting defects that can occur in dental castings including distortion, surface roughness, porosity, incomplete casting, and discoloration. It provides detailed explanations of different types of porosity defects such as localized shrinkage porosity, microporosity, pinhole porosity, gas inclusions, subsurface porosity, and back pressure porosity. Causes and methods for prevention of each type of defect are described. Surface roughness can result from factors like air bubbles in the wax pattern, water films, temperature variations during casting, foreign bodies in the mold, and composition or application of the investment material.
Gic
Glass ionomer cement was introduced in 1970 as a tooth-colored luting and restorative material. It bonds chemically to enamel and dentine, is esthetic, and releases fluoride over time which is anticariogenic. However, glass ionomer cement is also brittle and susceptible to erosion and wear. When mixed, the acid in the liquid attacks the glass powder, releasing calcium, aluminum, and fluoride ions to cross-link with polyacrylic acid chains and form the cement matrix. The set cement has unreacted glass particles embedded in a hydrated calcium/aluminum polyacrylate gel. It is important to protect the sensitive cement from moisture during setting for 24 hours to allow full hardening.
Zinc Phosphate Cement
Zinc phosphate cement is an older luting cement that exists in two types based on grain size. It consists of zinc oxide powder and an acidic liquid containing phosphoric acid. The powder and liquid undergo an exothermic chemical reaction where the acid attacks the zinc oxide particles. This forms a zinc-aluminophosphate gel matrix. Zinc phosphate cement has good compressive strength and insulation properties but low tensile strength. It is used for luting restorations and bases due to its strength but can irritate pulp and lacks aesthetic qualities. The working time can be extended through controlling the powder-liquid ratio, mixing temperature or technique.
Composite resin
This document discusses dental composites, including their:
- History dating back to the 1940s and developments since then
- Composition of a matrix, fillers, and coupling agent
- Classification based on filler size, curing method, area of use, and generations
- Properties including strength, smoothness, and polymerization shrinkage
- Advantages such as esthetics and bond strength, as well as disadvantages like polymerization shrinkage.
Dental bases and liners
This document discusses dental base and liners. It describes their classifications, properties, and considerations for use. The main classifications discussed are varnishes, liners, sub bases, and high strength bases. Key properties addressed include thermal properties, protection against chemical insults, physical properties, and pulp reaction. Different materials are compared, including zinc oxide-eugenol, calcium hydroxide, glass ionomers, resin-modified glass ionomers, zinc phosphate, and zinc polycarboxylate. Requirements, manipulation, and indications for use are also outlined.
Investment materials
This document discusses dental casting investments, which are materials used to form molds for casting dental restorations like crowns and bridges. It describes the components of investments, including refractory materials like silica, binders like gypsum or phosphate, and modifiers. It explains the properties investments must have like strength, expansion to compensate for shrinkage, and smooth surfaces. It covers the different types of investments including gypsum-bonded, phosphate-bonded, and silica-bonded and their appropriate uses and temperature ranges. It also discusses factors that affect the investments' setting expansion to help compensate for casting shrinkage.
ZINC OXIDE EUGENOL IMPRESSION PASTE (1).pptx
Zinc oxide eugenol impression paste sets via an irreversible chemical reaction between zinc oxide and eugenol to form zinc eugenolate. It has good detail reproduction and dimensional stability but can cause a burning sensation. It is mixed in equal volumes of zinc oxide paste and eugenol paste on a mixing slab until uniformly colored, and has a working time of about 1 minute before initial set. Variations include slower-setting surgical pastes and non-eugenol pastes that avoid the burning sensation.
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The document discusses the history of dental prosthetics from ancient times to the present. Some key points:
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- In the 18th-19th centuries, materials like gold, vulcanite, and porcelain were introduced. George Washington's dentures were made of ivory, lead, and gold.
- In the 1930s, polymethyl methacrylate (acrylic) became popular as it was more satisfactory than previous materials.
- The document outlines the evolution of dental prosthetics materials over millennia from basic materials like wood and bone to modern acry
Common medical emergencies and their management in Dental Practice
The document outlines common medical emergencies that may occur in a dental practice setting and their management, including adrenal insufficiency, anaphylaxis, angina, asthma, cardiac arrest, choking and aspiration, epileptic seizure, hyperventilation, hypoglycemia, mild allergy, myocardial infarction, postural hypotension, stroke, and syncope. For each condition, it provides information on relevant medical history, signs and symptoms, recommended drugs and routes of administration, and general management steps.
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Gypsum products in Dentistry
This document discusses gypsum products used in dentistry. It begins with definitions of key terms like gypsum, models, casts, impressions, and dies. It then outlines the major types of gypsum products including dental plaster, dental stone, die stone, and improved dental stone. The document describes the setting reactions of gypsum, how setting expansion is controlled, and factors that affect the dimensional stability of dental stone. It provides example questions that could be asked in essays about gypsum products, their classification, tests for setting, and specific types like dental plaster and stone.
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This document discusses different types of dental waxes, including their definitions, classifications, components, properties and uses. The main types covered are modelling wax, inlay wax, casting wax, boxing wax and sticky wax. For each type, the document outlines their composition, melting range, properties and intended uses. Thermal properties like solid-solid transition temperature, coefficient of thermal expansion and melting range are discussed for dental waxes in general.
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Gypsum
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrated. It is commonly found in nature and can be extracted and processed for use in construction. The manufacturing process of plaster of Paris (calcium sulfate hemihydrate) involves mining gypsum rock, crushing it, drying and powdering it, then calcining it at high temperatures to remove water molecules. This is then cooled, pulverized, and packaged for use. Plaster of Paris has various advantages for construction and decoration including being lightweight, fire resistant, and easy to work with.
Gypsum pdf
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrated. It is commonly found in nature and can be extracted and processed for use in construction. The manufacturing process of plaster of Paris (calcium sulfate hemihydrate) involves mining gypsum rock, crushing it, drying and powdering it, then calcining it at high temperatures to remove water molecules. This is then used to make gypsum board, which involves mixing the calcined gypsum powder with water and adding it between facing sheets to form panels. Gypsum board has advantages such as ease of installation, fire resistance, sound isolation and is commonly used for walls and ceilings in buildings.
Ecofriendly material GYPSUM BOARDS
This document discusses eco-friendly building materials and techniques. It defines eco-friendly materials as those that cause minimal harm to the environment compared to alternatives. Specific eco-friendly materials and techniques mentioned include bamboo, recycled materials, and methods that aid energy efficiency or are renewable/biodegradable. The document also provides detailed information about gypsum board, including its manufacturing process, properties, uses in construction and medicine, types, and advantages of dropped ceilings that use gypsum board.
NARM BROCHURE 2015 [eVer]
Narm Rubber is a leading Australian manufacturer of rubber products that has been operating since 1922. It has factories in Brisbane and Sydney and focuses on developing sustainable and recycled rubber products. Narm Rubber prides itself on developing trusted relationships with customers and tailoring rubber products to their specific needs.
Green manufacturing
The document discusses green manufacturing. It defines green manufacturing as a method for manufacturing that minimizes waste and pollution through product and process design. It highlights benefits like saving costs, reducing environmental waste, and improving efficiency. Green manufacturing involves moving from end-of-pipe controls to technologies like waste reduction at source, recycling, and end-of-life management. The document provides examples of green manufacturing applications in industries like automobiles, where fuel efficiency has increased.
gypsum.pptx
Gypsum is a soft sulfate mineral that is widely used in construction. It is composed of calcium sulfate dihydrate (CaSO4·2H2O) and is formed through sedimentary processes. Gypsum has several uses - it is used to produce plaster of Paris, used in wallboard/drywall for interior walls and ceilings, and used to make decorative plasterwork. Gypsum mining involves excavation, crushing, grinding and calcination to extract the mineral. The calcined gypsum is then used to manufacture various construction materials through processes like board production. Gypsum products provide benefits like ease of installation, fire resistance, soundproofing and moisture resistance.
Gypsum and rubber use in building construction
COMPOSITION OF GYPSUM
Types and source of gypsum
types
Properties of gypsum
Gypsum as BUILDING MATERIAL
RUBBER
It can be classified in two parts:
Types of Rubber :
USES:-
PROPERTIES
GREEN MATERIAL / ECO FRIENDLY MATERIAL
25 -green_asphalt_cold_patch
GreenPatch is an environmentally friendly cold asphalt patch that contains no petroleum-based softeners like conventional patches. It is a direct replacement for traditional cold patch without compromising quality or increasing costs. GreenPatch does not contain volatile organic compounds and uses recycled materials, reducing its environmental impact. It was developed by Cold Mix Manufacturing to provide a competitive and eco-friendly alternative to traditional cold patch for repairing roads and driveways.
Gypsum Products
Gypsum products like gypsum board, suspended ceilings, gypsum plaster, and accessories were discussed. Gypsum board is a common interior finish made of gypsum plaster pressed between paper sheets. It is used for interior walls and ceilings. Suspended ceilings made of gypsum board panels provide benefits like insulation, aesthetics, and acoustics. Gypsum plaster, also called plaster of paris, is used for wall finishes and has advantages over traditional cement plaster like lighter weight, faster application without curing, and a smooth finish.
GYPSUM PLASTER
This document provides information about gypsum plaster, including:
1. Gypsum is a mineral composed of calcium sulfate dihydrate with the chemical formula CaSO4·2H2O. It is used to make plaster and is widely mined.
2. In India, Rajasthan is the largest producer of gypsum. Phosphogypsum is a radioactive byproduct of producing phosphoric acid from phosphate rock.
3. Ashtech produces high quality gypsum plaster in India under the brands Vega and Reva. Their plasters provide benefits over traditional plasters like sand cement in strength, application ease, and time savings.
ASHTECH GYPSUM
This document provides information about gypsum plaster from Ashtech Gypsum Plaster. It discusses the different types of gypsum like selenite gypsum, mineral gypsum, and phosphogypsum. It explains gypsum occurrence in India with Rajasthan being the largest producer. The manufacturing process of phosphogypsum is described. It discusses the radioactivity in phosphogypsum due to uranium and radium. The benefits, advantages, and applications of gypsum plaster are highlighted. Ashtech provides high-grade domestic and imported gypsum plaster with high compressive strength for quality assurance. The document summarizes Ashtech's gypsum production process and formulations to control strength and setting properties.
Gyproc
Saint Gobain Gyproc India Ltd. is a market leader in India's plasterboard market with a 48% market share. The document discusses Saint Gobain's products, financial performance, competitors like Lafarge Boral and Sai India, and the Indian gypsum market. It also presents a SWOT analysis and the results of a survey of 15 Saint Gobain dealers regarding their satisfaction with the company's products, advertising, and distribution channels.
Gypsum Plastering.pptx
Gypsum plaster is formed from gypsum rock which is heated to remove water, producing hemi-hydrate plaster of paris. This is mixed with additives to produce gypsum plaster suitable for plastering. Gypsum plaster sets through recombination with water to provide a smooth, level surface ready for painting. It offers advantages over traditional sand-cement plaster like reduced shrinkage cracking, faster application without curing, lighter weight, and better thermal and acoustic properties. A primer undercoat is recommended before painting gypsum plaster to improve paint adhesion and durability.
Eco friendly-concrete (Green Concrete)
The document discusses eco-friendly or green concrete as concrete that uses less energy and produces less carbon dioxide than traditional concrete. It outlines various strategies for green concrete including increased use of recycled materials and supplementary cementitious materials. Specific materials that can be used in green concrete include fly ash, GGBS, silica fume, recycled concrete, glass, and plastic aggregates which provide benefits like reduced CO2 emissions and costs. The objectives and advantages of green concrete in sustainable construction are also presented.
Agricultural-Waste-and-Industrial-Waste-in-construction.pptx
This document discusses various agricultural and industrial wastes that can be used as construction materials. It provides details on sugarcane bagasse, rice husk, straw bale, coir fiber, fly ash, blast furnace slag, red mud, marble powder waste, newspaper wood, nappy roofing, recycled plastic bottles and blood bricks. For each material, it describes how it is produced as a waste, its composition, and advantages of using it in construction such as cost-effectiveness, sustainability and improved mechanical properties of construction elements.
GEOPOLYMER CONCRETE WITH SELF COMPACTING: A REVIEW
In this construction world, Geopolymer concrete is a special concrete which doesn't
requires the Ordinary Portland Cement and also reduces the emission of carbon-dioxide. The
Geopolymer Concrete is made up of industrial by-products (which contains more Silica and
Alumina) and activated with the help of Alkaline solution (combination of sodium hydroxide &
sodium silicate or potassium hydroxide & potassium silicate). The high viscosity nature of
Geopolymer Concrete had the ability to fail due to lack of compaction. In improvising the
issue, Self Compacting Geopolymer Concrete has been introduced. The SCGC doesn't require
any additional compaction it will flow and compacted by its own weight. This concrete is made
up of industrial by-products like Fly ash, GGBFS and Silica Fume and activated with alkaline
solution. The earlier research was mostly on Fly ash based SCGC. In few research works Fly
ash was partially replaced with GGBS and Silica Fume. They evaluated the compressive
strength of concrete with varying molarties of NaOH; curing time and curing temperature. The
flexural behavior of the concrete also examined. The Fly ash based SCGC was got high
compressive strength in heat curing as well as low compressive strength in ambient curing.
The presence of GGBS improves the strength in ambient curing. For aiming the high strength
in ambient curing Fly ash will be completely replace and examine with different mineral
admixtures.
Similar to Synthetic Gypsum: A Sustainable Alternative (20)
Agricultural-Waste-and-Industrial-Waste-in-construction.pptx
Agricultural-Waste-and-Industrial-Waste-in-construction.pptx
GEOPOLYMER CONCRETE WITH SELF COMPACTING: A REVIEW
GEOPOLYMER CONCRETE WITH SELF COMPACTING: A REVIEW
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一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证成绩单专业办理
UMich毕业证原版定制【微信：176555708】【密歇根大学|安娜堡分校毕业证成绩单-学位证】【微信：176555708】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
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CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECT
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Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
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governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
Advanced control scheme of doubly fed induction generator for wind turbine us...
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Literature Review Basics and Understanding Reference Management.pptx
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
6th International Conference on Machine Learning & Applications (CMLA 2024)
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Design and Analysis of Algorithms-DP,Backtracking,Graphs,B&B
Dynamic Programming
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Building Electrical System Design & Installation
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Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
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Synthetic Gypsum: A Sustainable Alternative
- 1. Synthetic Gypsum: A Sustainable Alternative Experts in process design and material processing for over 60 years.
- 2. Gypsum can be found in products all around us: from construction materials and cement, to soil amendments, and more.
- 3. And while traditional, mined gypsum has served as the raw material for these products, a manufactured form of gypsum is gaining in popularity: Synthetic Gypsum, otherwise called SynGyp.
- 4. Synthetic Gypsum is created as a by- product of industrial processing, particularly in the case of Flue Gas Desulfurization (FGD) at fossil-fueled power plants.
- 5. Synthetic Gypsum is created as a by- product of industrial processing, particularly in the case of Flue Gas Desulfurization (FGD) at fossil-fueled power plants. FGD Gypsum is the most common form of synthetic gypsum.
- 6. In the flue gas desulfurization process, scrubbers remove sulfur dioxide from gas pollutants before they can enter the atmosphere.
- 7. In the flue gas desulfurization process, scrubbers remove sulfur dioxide from gas pollutants before they can enter the atmosphere. This process was developed as part of the Clean Air Act, to prevent acid rain.
- 8. People quickly realized that the by- product created by this process could serve as a pure form of manufactured gypsum…
- 9. People quickly realized that the by- product created by this process could serve as a pure form of manufactured gypsum… …and that it offered many benefits.
- 11. Revenue is created from a product that otherwise incurred waste management costs. Benefit:
- 12. Material going to landfills is reduced. Benefit:
- 13. Sources of natural gypsum are conserved and the need to mine them is reduced. Benefit:
- 14. Both synthetic and natural gypsum are 100% recyclable, meaning they can be reused and reprocessed over and over without loss of quality. Benefit:
- 15. Synthetic Gypsum is now used interchangeably with natural gypsum in many applications.
- 16. Common Uses for Synthetic Gypsum
- 17. Cement
- 18. Cement Drywall
- 23. Synthetic gypsum offers a valuable opportunity to utilize a material that would otherwise be considered a waste. Conclusion
- 24. Synthetic gypsum offers a valuable opportunity to utilize a material that would otherwise be considered a waste. Additionally, it helps us to conserve our natural resources, and is 100% recyclable. Conclusion
- 25. has been working with gypsum for over 60 years, providing testing, process design and development, and manufacturing of gypsum processing equipment. FEECO
- 26. has been working with gypsum for over 60 years, providing testing, process design and development, and manufacturing of gypsum processing equipment. We’ve helped many companies to process their synthetic gypsum into a usable, value-added product. FEECO
- 27. Want to learn more? Download our Gypsum Processing E-book. Gypsum Processing E-book Processing Techniques Challenges Material Characteristics Maintenance Download Now