Dental Composite
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This document discusses dental composite materials. It provides a brief history, noting their introduction in the 1960s and improvements over time, including the development of microfilled and hybrid composites in the 1980s-1990s. The document outlines the composition of dental composites, including monomers, photo initiators, fillers like silica and glass. It also discusses different filler types and particle sizes, as well as setting mechanisms like chemical, light, and dual cures. Advantages include esthetics, bonding to tooth structure, and disadvantages include shrinkage and required skill. The document classifies composites by handling characteristics and location of restoration fabrication. It concludes with the method and clinical application of dental composites.
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GLASS IONOMER CEMENT AND ITS RECENT ADVANCES- by Dr. JAGADEESH KODITYALA
This document provides an overview of glass ionomer cement, including its definition, history, composition, classification, setting reaction, properties, and recent advances. Key points include:
- Glass ionomer cement was invented in 1969 and first reported in 1971, consisting of a glass powder and aqueous solution of polyacrylic acid.
- It is classified based on its intended use, such as luting cement, restorative cement, or liner/base material.
- The setting reaction involves an acid-base reaction between the glass powder and polyacrylic acid, forming bonds through a calcium polyacrylate matrix that continues to harden over time.
- Properties include adhesion to tooth structure, biocompatibility, fluoride
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Glass ionomer cement is a dental restorative material used for fillings and cementing. Earlier versions had issues with setting time, opacity, and sensitivity to moisture during setting. Newer generations have faster setting and reduced hydration problems. Resin-modified glass ionomers set partly through acid-base reaction and partly through resin polymerization. They have improved aesthetics, strength, and reduced sensitivity to moisture. Compomers were intended to combine properties of glass ionomers and composites but do not achieve the full properties of either. Giomers use pre-reacted glass ionomer fillers in a resin matrix to provide benefits of composites with fluoride release and recharge of glass ionomers.
Composite
This document provides an overview of composite resin materials used in dental restorations. It defines composite resin as a compound of two or more materials with superior properties to the individual components. Composite resins are classified based on filler size, percentage, resin type, viscosity, and curing method. The document outlines the composition of composite resins including resin matrix, filler particles, coupling agents, and initiators. It discusses advantages like esthetics and disadvantages like polymerization shrinkage. Properties like coefficient of thermal expansion, wear resistance, water absorption, and mechanical properties are also covered.
Composite resin restoration in dentistry
Dr. Mayank Nahta presented on dental composites. Composites are polymers reinforced with filler particles that are bound together. Dr. Ray Bowen developed the first dental composite in 1962 using Bis-GMA resin and glass/quartz fillers. Composites are used for restorations, veneers, cores, and more. They are classified based on properties like filler size, composition, and curing method. Composites provide strength, polishability, aesthetics, and more depending on their formulation. Developments include microfilled, small particle, hybrid, and flowable composites to optimize properties.
Composite
This document provides an overview of dental composite materials. It begins with an introduction and then discusses the history, definitions, indications, advantages, disadvantages, and classifications of composites. It describes the composition of composites including the resin matrix, inorganic fillers, and coupling agents. Different types of composites are explained such as traditional composites, small particle composites, microfilled composites, hybrid composites, and nanofilled composites. Recent advances like flowable composites, packable composites, antibacterial composites, nanocomposites, ormocers, compomers, and smart composites are also summarized.
Composite resin technique
The document outlines the steps for performing a composite resin restoration:
1) Isolate the operating area using a rubber dam to protect the restoration from contamination.
2) Etch the enamel surface with phosphoric acid for 15-30 seconds and condition the dentin.
3) Wash and dry the etched surfaces before applying the bonding agent.
4) Apply the bonding agent and cure it to bond the composite to the tooth.
Impression materials and techniques
1) Impression materials are used to produce replicas of intraoral tissues and come in elastic or non-elastic varieties. Common elastic materials include alginate, agar, and elastomeric polymers like polysulfides, silicones, and polyethers.
2) The document discusses the history, ideal requirements, and classifications of impression materials. It provides details on agar and alginate hydrocolloids as well as elastomeric materials, their properties, advantages, disadvantages, and applications.
3) Recent advances include dustless alginates, two-paste alginate systems, siliconized alginates, and light-cured elastomers which offer improvements to traditional materials. Pro
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GLASS IONOMER CEMENT AND ITS RECENT ADVANCES- by Dr. JAGADEESH KODITYALA
This document provides an overview of glass ionomer cement, including its definition, history, composition, classification, setting reaction, properties, and recent advances. Key points include:
- Glass ionomer cement was invented in 1969 and first reported in 1971, consisting of a glass powder and aqueous solution of polyacrylic acid.
- It is classified based on its intended use, such as luting cement, restorative cement, or liner/base material.
- The setting reaction involves an acid-base reaction between the glass powder and polyacrylic acid, forming bonds through a calcium polyacrylate matrix that continues to harden over time.
- Properties include adhesion to tooth structure, biocompatibility, fluoride
Advances in glass ionomer cement
Glass ionomer cement is a dental restorative material used for fillings and cementing. Earlier versions had issues with setting time, opacity, and sensitivity to moisture during setting. Newer generations have faster setting and reduced hydration problems. Resin-modified glass ionomers set partly through acid-base reaction and partly through resin polymerization. They have improved aesthetics, strength, and reduced sensitivity to moisture. Compomers were intended to combine properties of glass ionomers and composites but do not achieve the full properties of either. Giomers use pre-reacted glass ionomer fillers in a resin matrix to provide benefits of composites with fluoride release and recharge of glass ionomers.
Composite
This document provides an overview of composite resin materials used in dental restorations. It defines composite resin as a compound of two or more materials with superior properties to the individual components. Composite resins are classified based on filler size, percentage, resin type, viscosity, and curing method. The document outlines the composition of composite resins including resin matrix, filler particles, coupling agents, and initiators. It discusses advantages like esthetics and disadvantages like polymerization shrinkage. Properties like coefficient of thermal expansion, wear resistance, water absorption, and mechanical properties are also covered.
Composite resin restoration in dentistry
Dr. Mayank Nahta presented on dental composites. Composites are polymers reinforced with filler particles that are bound together. Dr. Ray Bowen developed the first dental composite in 1962 using Bis-GMA resin and glass/quartz fillers. Composites are used for restorations, veneers, cores, and more. They are classified based on properties like filler size, composition, and curing method. Composites provide strength, polishability, aesthetics, and more depending on their formulation. Developments include microfilled, small particle, hybrid, and flowable composites to optimize properties.
Composite
This document provides an overview of dental composite materials. It begins with an introduction and then discusses the history, definitions, indications, advantages, disadvantages, and classifications of composites. It describes the composition of composites including the resin matrix, inorganic fillers, and coupling agents. Different types of composites are explained such as traditional composites, small particle composites, microfilled composites, hybrid composites, and nanofilled composites. Recent advances like flowable composites, packable composites, antibacterial composites, nanocomposites, ormocers, compomers, and smart composites are also summarized.
Composite resin technique
The document outlines the steps for performing a composite resin restoration:
1) Isolate the operating area using a rubber dam to protect the restoration from contamination.
2) Etch the enamel surface with phosphoric acid for 15-30 seconds and condition the dentin.
3) Wash and dry the etched surfaces before applying the bonding agent.
4) Apply the bonding agent and cure it to bond the composite to the tooth.
Impression materials and techniques
1) Impression materials are used to produce replicas of intraoral tissues and come in elastic or non-elastic varieties. Common elastic materials include alginate, agar, and elastomeric polymers like polysulfides, silicones, and polyethers.
2) The document discusses the history, ideal requirements, and classifications of impression materials. It provides details on agar and alginate hydrocolloids as well as elastomeric materials, their properties, advantages, disadvantages, and applications.
3) Recent advances include dustless alginates, two-paste alginate systems, siliconized alginates, and light-cured elastomers which offer improvements to traditional materials. Pro
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A short review of literature about dental composites with a brief discussion about the recent advancements
Dental amalgam
The document discusses dental amalgam, including its historical background, composition, manufacturing process, phases, kinetics of amalgamation, manipulation factors, properties, and alternatives. It provides details on the alloy manufacturing process, phases that form in amalgam, the kinetics of how amalgam sets, and factors that influence manipulating the amalgam mix, such as choice of alloy, mercury, and trituration method. It also outlines the properties of set amalgam, including its dimensional changes, strengths, corrosion resistance, and thermal properties.
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.
Liner Bases & Varnishes
This document provides information on cavity liners and bases used for pulp protection. It begins with an introduction and overview of steps for tooth preparation. It then discusses the objectives of pulp protection including sealing smear layers and providing chemical, electrical, thermal and mechanical protection.
It classifies intermediary bases according to different authors and lists ideal requirements. It describes different types of liners in detail - solution liners (varnishes), suspension liners, and cement liners. Their compositions, thicknesses, functions and applications are explained. Finally, it defines cavity bases, their types (high strength and low strength), and purposes of providing thermal protection and mechanical support to the pulp.
Class i cavity preparation
1. The document provides guidance on class I cavity preparation for amalgam and composite restorations. It describes the different types of class I preparations including conservative and extensive preparations.
2. Guidelines are provided on ideal outline form, resistance and retention forms, tooth preparation sequence, and use of liners and bases. Considerations for tooth preparation with amalgam versus composite are also discussed.
3. The summary focuses on key steps and guidelines for class I cavity preparation to help the reader understand the essential information for restoring class I lesions.
Contacts & Contours
This document discusses contacts and contours in restorative dentistry. Proper contacts and contours are important for occlusal harmony and stability. They prevent food impaction, maintain the periodontium, and improve restoration longevity. The key elements discussed include proximal contact areas, embrasures, marginal ridges, and different techniques for tooth movement and matrixing to establish ideal contacts and contours. Rapid, immediate tooth movement uses separators or wedges, while slow movement occurs over time. Understanding contacts and contours is essential for diagnosing caries risk factors and restoring teeth properly.
ZINC PHOSPHATE CEMENT
This document discusses the properties and use of zinc phosphate cement. It is the oldest luting cement, classified in two types - fine grained for luting and medium grained for luting and filling. The powder contains zinc oxide, magnesium oxide, and silica. The liquid contains phosphoric acid, water, and aluminum phosphate. When mixed, a reaction forms a zinc aluminophosphate gel. It has high compressive strength but no chemical adhesion and can irritate the pulp. Zinc phosphate cement is used for luting restorations and bases and as a temporary restoration material.
Bonding agents used in dentistry
This document discusses dentin bonding agents. It provides background on adhesion and the challenges of bonding to dentin compared to enamel. Key points discussed include:
- Conditioning of dentin is needed to remove the smear layer and expose collagen fibers. This can be done chemically using acids or chelators.
- Primers are then used which contain both hydrophilic and hydrophobic monomers. They displace water from the moist collagen network and allow resin infiltration.
- The concept of "wet bonding" was introduced, in which acid-etched dentin is kept moist during bonding to maintain the expanded collagen network for resin penetration.
Gass Ionomer Cement
Glass ionomer cement is a tooth-colored dental restorative material introduced in 1972. It bonds chemically to tooth structure and releases fluoride for a long period. It sets via an acid-base reaction between glass powder and polyacrylic acid liquid. Glass ionomer cement has properties like adhesion to tooth structure, anticariogenic activity due to fluoride release, and biocompatibility. However, its strength and esthetics are inferior to dental composites. Modifications to glass ionomer cement include resin-modified and metal-modified varieties to improve strength. The sandwich technique combines the benefits of glass ionomer cement with those of composite resin.
Basic of composites
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Physical properties of dental materials
This document provides an overview of the physical properties of dental materials. It discusses topics like the structure of matter, interatomic bonds, adhesion and bonding, concepts of stress and strain, and rheology. The document is intended to explain the underlying physics and chemistry that determine the mechanical, thermal, optical and other observable qualities of dental materials. It focuses on topics like crystalline structure, bonding forces, surface energy, wetting, and how stresses and strains impact materials at the atomic level. The overall aim is to describe the fundamental physical principles that govern the behavior and performance of different dental materials.
Pit and Fissure sealants
This document discusses dental pit and fissure sealants. It begins by defining pits and fissures, then provides a brief history of sealants. It describes the ideal requirements, materials used, indications and contraindications. It discusses which teeth should be sealed and the appropriate age ranges. The document concludes by outlining the technique for applying sealants.
dental composite
Dental composites are restorative materials used to fill cavities and repair teeth. They consist of resin matrices and inorganic filler particles, and can be cured using light or chemical activation methods. Over time, composites have improved through reductions in particle size and the use of nanofillers to enhance mechanical and aesthetic properties. Direct dental composites are placed by dentists to restore teeth using various techniques sensitive to factors like shade matching and curing methods. While composites provide good esthetics and tooth conservation, they also have disadvantages like technique sensitivity and risks of microleakage.
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.
Concept and tecnique of impression making in complete dentures
This document discusses concepts and techniques for complete denture impressions. It begins with definitions of impressions and complete denture impressions. It then reviews the history of impressions from the 18th century to present. Key anatomical landmarks are described for the maxilla and mandible, including supporting, relieving, and limiting structures. Basic requirements for impressions include anatomical knowledge, technique skills, material knowledge, and patient management. Steps and various impression techniques are also outlined.
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Composite resin is a combination of two or more chemically different materials that results in properties superior to the individual components. It consists of a resin matrix and filler materials. Over time, developments have included the introduction of silane coupling agents, light-cured composites, microfilled composites, and nanofilled composites. Composites are classified based on properties such as filler size and distribution, polymerization method, presentation, consistency, and intended use. Proper use of composites for dental restorations requires understanding of factors like smile design, tooth color, shape, and position.
Recent Advances in Dental Ceramics
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dentin bonding agents
The document discusses the role and development of dentine bonding agents. It describes the challenges of bonding to dentine due to its structure and composition compared to enamel. Various generations of bonding agents are classified, from early phosphoric acid-based systems to modern multi-step etch-and-rinse and self-etch adhesives. Conditioning of the dentine surface and the role of priming agents are explained. Factors affecting the bonding process such as smear layer removal and acid etching duration are also covered.
Restorative resins
Restorative resins have evolved from early silicate-based materials to modern resin composites. Resin composites are composed of a resin matrix reinforced with inorganic filler particles. They are classified based on filler size and curing mechanism. Developments include microfilled, small particle, and hybrid composites, as well as flowable and packable composites. Resin composites are used for anterior and posterior restorations. Successful use requires acid etching of enamel, dentin bonding agents, and incremental placement techniques to reduce polymerization stresses.
Dental amalgams
The document provides information on dental amalgam, including its composition, manufacturing process, properties, uses and classifications. It discusses the key components of amalgam alloys such as silver, tin, copper and mercury. It also describes the various metallurgical phases that form in amalgam, including the gamma and gamma-2 phases. Furthermore, it covers the history of amalgam and the different "amalgam wars" that occurred over the use of dental amalgam. The manufacturing process for alloy powders, including lathe-cut and atomized methods, is also summarized.
Resin.pptx
This document discusses resin-based composite materials used in dentistry. It defines resin and composite materials and outlines ideal properties for dental filling materials. The document then summarizes the evolution of composite resin materials from silicate cements in 1871 to modern nanofilled and nanohybrid composites. It also classifies carious lesions and restorations. The document discusses the uses, advantages, disadvantages, and types of composite resins, including classifications based on curing mechanism, viscosity, and applications.
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The document discusses dental amalgam, including its historical background, composition, manufacturing process, phases, kinetics of amalgamation, manipulation factors, properties, and alternatives. It provides details on the alloy manufacturing process, phases that form in amalgam, the kinetics of how amalgam sets, and factors that influence manipulating the amalgam mix, such as choice of alloy, mercury, and trituration method. It also outlines the properties of set amalgam, including its dimensional changes, strengths, corrosion resistance, and thermal properties.
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.
Liner Bases & Varnishes
This document provides information on cavity liners and bases used for pulp protection. It begins with an introduction and overview of steps for tooth preparation. It then discusses the objectives of pulp protection including sealing smear layers and providing chemical, electrical, thermal and mechanical protection.
It classifies intermediary bases according to different authors and lists ideal requirements. It describes different types of liners in detail - solution liners (varnishes), suspension liners, and cement liners. Their compositions, thicknesses, functions and applications are explained. Finally, it defines cavity bases, their types (high strength and low strength), and purposes of providing thermal protection and mechanical support to the pulp.
Class i cavity preparation
1. The document provides guidance on class I cavity preparation for amalgam and composite restorations. It describes the different types of class I preparations including conservative and extensive preparations.
2. Guidelines are provided on ideal outline form, resistance and retention forms, tooth preparation sequence, and use of liners and bases. Considerations for tooth preparation with amalgam versus composite are also discussed.
3. The summary focuses on key steps and guidelines for class I cavity preparation to help the reader understand the essential information for restoring class I lesions.
Contacts & Contours
This document discusses contacts and contours in restorative dentistry. Proper contacts and contours are important for occlusal harmony and stability. They prevent food impaction, maintain the periodontium, and improve restoration longevity. The key elements discussed include proximal contact areas, embrasures, marginal ridges, and different techniques for tooth movement and matrixing to establish ideal contacts and contours. Rapid, immediate tooth movement uses separators or wedges, while slow movement occurs over time. Understanding contacts and contours is essential for diagnosing caries risk factors and restoring teeth properly.
ZINC PHOSPHATE CEMENT
This document discusses the properties and use of zinc phosphate cement. It is the oldest luting cement, classified in two types - fine grained for luting and medium grained for luting and filling. The powder contains zinc oxide, magnesium oxide, and silica. The liquid contains phosphoric acid, water, and aluminum phosphate. When mixed, a reaction forms a zinc aluminophosphate gel. It has high compressive strength but no chemical adhesion and can irritate the pulp. Zinc phosphate cement is used for luting restorations and bases and as a temporary restoration material.
Bonding agents used in dentistry
This document discusses dentin bonding agents. It provides background on adhesion and the challenges of bonding to dentin compared to enamel. Key points discussed include:
- Conditioning of dentin is needed to remove the smear layer and expose collagen fibers. This can be done chemically using acids or chelators.
- Primers are then used which contain both hydrophilic and hydrophobic monomers. They displace water from the moist collagen network and allow resin infiltration.
- The concept of "wet bonding" was introduced, in which acid-etched dentin is kept moist during bonding to maintain the expanded collagen network for resin penetration.
Gass Ionomer Cement
Glass ionomer cement is a tooth-colored dental restorative material introduced in 1972. It bonds chemically to tooth structure and releases fluoride for a long period. It sets via an acid-base reaction between glass powder and polyacrylic acid liquid. Glass ionomer cement has properties like adhesion to tooth structure, anticariogenic activity due to fluoride release, and biocompatibility. However, its strength and esthetics are inferior to dental composites. Modifications to glass ionomer cement include resin-modified and metal-modified varieties to improve strength. The sandwich technique combines the benefits of glass ionomer cement with those of composite resin.
Basic of composites
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Physical properties of dental materials
This document provides an overview of the physical properties of dental materials. It discusses topics like the structure of matter, interatomic bonds, adhesion and bonding, concepts of stress and strain, and rheology. The document is intended to explain the underlying physics and chemistry that determine the mechanical, thermal, optical and other observable qualities of dental materials. It focuses on topics like crystalline structure, bonding forces, surface energy, wetting, and how stresses and strains impact materials at the atomic level. The overall aim is to describe the fundamental physical principles that govern the behavior and performance of different dental materials.
Pit and Fissure sealants
This document discusses dental pit and fissure sealants. It begins by defining pits and fissures, then provides a brief history of sealants. It describes the ideal requirements, materials used, indications and contraindications. It discusses which teeth should be sealed and the appropriate age ranges. The document concludes by outlining the technique for applying sealants.
dental composite
Dental composites are restorative materials used to fill cavities and repair teeth. They consist of resin matrices and inorganic filler particles, and can be cured using light or chemical activation methods. Over time, composites have improved through reductions in particle size and the use of nanofillers to enhance mechanical and aesthetic properties. Direct dental composites are placed by dentists to restore teeth using various techniques sensitive to factors like shade matching and curing methods. While composites provide good esthetics and tooth conservation, they also have disadvantages like technique sensitivity and risks of microleakage.
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.
Concept and tecnique of impression making in complete dentures
This document discusses concepts and techniques for complete denture impressions. It begins with definitions of impressions and complete denture impressions. It then reviews the history of impressions from the 18th century to present. Key anatomical landmarks are described for the maxilla and mandible, including supporting, relieving, and limiting structures. Basic requirements for impressions include anatomical knowledge, technique skills, material knowledge, and patient management. Steps and various impression techniques are also outlined.
Dentalcomposite (1)
Composite resin is a combination of two or more chemically different materials that results in properties superior to the individual components. It consists of a resin matrix and filler materials. Over time, developments have included the introduction of silane coupling agents, light-cured composites, microfilled composites, and nanofilled composites. Composites are classified based on properties such as filler size and distribution, polymerization method, presentation, consistency, and intended use. Proper use of composites for dental restorations requires understanding of factors like smile design, tooth color, shape, and position.
Recent Advances in Dental Ceramics
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dentin bonding agents
The document discusses the role and development of dentine bonding agents. It describes the challenges of bonding to dentine due to its structure and composition compared to enamel. Various generations of bonding agents are classified, from early phosphoric acid-based systems to modern multi-step etch-and-rinse and self-etch adhesives. Conditioning of the dentine surface and the role of priming agents are explained. Factors affecting the bonding process such as smear layer removal and acid etching duration are also covered.
Restorative resins
Restorative resins have evolved from early silicate-based materials to modern resin composites. Resin composites are composed of a resin matrix reinforced with inorganic filler particles. They are classified based on filler size and curing mechanism. Developments include microfilled, small particle, and hybrid composites, as well as flowable and packable composites. Resin composites are used for anterior and posterior restorations. Successful use requires acid etching of enamel, dentin bonding agents, and incremental placement techniques to reduce polymerization stresses.
Dental amalgams
The document provides information on dental amalgam, including its composition, manufacturing process, properties, uses and classifications. It discusses the key components of amalgam alloys such as silver, tin, copper and mercury. It also describes the various metallurgical phases that form in amalgam, including the gamma and gamma-2 phases. Furthermore, it covers the history of amalgam and the different "amalgam wars" that occurred over the use of dental amalgam. The manufacturing process for alloy powders, including lathe-cut and atomized methods, is also summarized.
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This document discusses dental cements, bases, liners, bonding agents, and restorative dental materials. It describes the properties and types of various dental materials, including their compositions, properties, and manipulation considerations. It also outlines the roles of dental assistants in preparing and placing dental materials, as well as describing techniques for treating cavity preparations depending on their depth and proximity to the pulp.
Adhesive resins,Dr Justin Ninan
The document discusses resin cements and their applications in dentistry. It begins with an introduction to resin cements and their improved properties over earlier unfilled resins. It then defines resin cements and provides classifications. The main types and applications of resin cements are outlined, along with their advantages like strength and insolubility, and disadvantages like polymerization shrinkage. Composition, characteristics, and cementation procedures for different restorations are described. Properties of resin cements and resin-modified glass ionomer cements are also compared.
dental cements(1)_ORIGINAL.ppt
This document discusses different types of dental cements. It begins by describing the ideal requirements of dental cement, including being non-toxic, insoluble in saliva, providing protection to the pulp, and having adhesive properties. It then classifies cements according to their application and chemical composition. Common types discussed include zinc phosphate, zinc oxide eugenol, glass ionomer, and resin cements. The document provides details on the composition, properties, manipulation and applications of each cement type.
3. dental cements i
This document provides an overview of dental cements. It begins with an introduction to dental cements, their classification, uses, properties, and examples. Key points include that dental cements are used as luting agents, restorative materials, and bases/liners. They are classified based on their composition and setting reaction. Common cements discussed include silicate, zinc phosphate, zinc polycarboxylate, zinc oxide eugenol, glass ionomer, resin modified glass ionomer, and resin cements. The properties, compositions, uses and advantages/disadvantages of different cements are summarized.
Esthetic crowns in pediatric dentistry.pptx
Esthetic crowns are used in pediatric dentistry to restore teeth damaged by decay in a way that preserves function and improves appearance. There are various types of crowns including strip crowns made of composite, pre-veneered stainless steel crowns, polycarbonate crowns, and ceramic crowns. Indications include extensive decay, fractures, discoloration or pulp therapy. Contraindications include non-restorable teeth. Placement involves tooth preparation and selection of an appropriately sized crown, which is then bonded or cemented onto the prepared tooth.
Restorative materials used in paediatric dentistry
This document provides an overview of restorative materials used in pediatric dentistry, including recent advancements. It discusses the need for restoration in deciduous teeth and the requirements of ideal restorative materials. The main materials covered are glass ionomer cement, composite resins, and amalgam. For glass ionomer cement, it describes the composition, setting reaction, properties, classifications, and recent modifications like resin-modified, nano, and compomer versions. Recent advancements discussed include alternatives to amalgam and improvements to composites and glass ionomer cement.
AMALGAM CAVITY PREPARATION
AMALGAM CAVITY PREPARATION... CLASS I TO CLASS VI
MARZOUKS AND BLACKS CLASSIFICATION OF CAVITY PREPARATION
INITIAL AND FINAL PREPARATIONS
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application of intra-oral scanner in fixed prosthodontics:
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Dental Composite
- 1. Dental Composite Lecture no.1 Done by Assistant lecturer Ahmed Ali Jasim Operative Dentistry Department College of Dentistry / Mustansiriyah University
- 2. Dental composite resins are esthetic dental restorative material made of synthetic resins.
- 3. History of Dental composite • Before 1960 silicates and unfilled resins • 1970s introduction of the two paste , UV and visible light activation All suffered from poor properties and esthetic
- 4. History of Dental composite • 1980s introduction of the Micro-filled composite Better esthetic but poor strength • 1990s until now introduction of the Hybrid composite Better esthetic and properties and handling
- 5. Composition of Dental composite Composite resins are most commonly composed of : • Monomers (synthetic resin) organic phase I. Photo initiator II. Coupling agent III. Matrix • Filler material such as (silica / glass ) inorganic phase Further tailoring of physical properties is achieved by formulating unique concentrations of each constituent.
- 6. Filler types and particle size Glass fillers (silica zirconia alumina etc…)can be further subdivided based on their particle size and shapes such as: Macro-filled filler 5 - 10 µm Micro-filled filler ~ 0.4 µm Hybrid filler 0.01 - 8 µm Nano-filled filler 20-70 nm Nano-Hybrid filler Nano – micro mix
- 7. Setting mechanisms of Dental composite Types of setting mechanisms: • Chemical cure (self-cure / dark cure) • Light cure • Dual cure (setting both chemically and by light)
- 8. Advantages of Dental composite : • Reasonably inexpensive • Lack of corrosion • Reduced mercury exposure • Reparability
- 9. Advantages of Dental composite : • Insoluble • Bonding to tooth structure • Good tooth-like appearance • Insensitive to dehydration • Easy to manipulate • Tooth-sparing preparation • Reasonably inexpensive • Lack of corrosion • Reduced mercury exposure • Reparability
- 10. Disadvantages of Dental composite • Composite shrinkage and secondary caries • Durability • Skill and training required • Isolation • Time and expense
- 11. Classification of Dental composite according to handling characteristics • Universal: advocated for general use, oldest subtype of resin composite • Flowable: fluid consistency, used for very small restorations • Packable: stiffer, more viscous material used solely for posterior parts of the mouth
- 12. Classification of Dental composite according to location of fabrication of the restoration • Direct dental composites (inside patient mouth) i. Filling cavity preparations ii. Filling gaps (diastemas) between teeth using a shell-like veneer or iii. Minor reshaping of teeth iv. Partial crowns on single teeth
- 13. Classification of Dental composite according to location of fabrication of the restoration • Indirect dental composites (outside patient mouth) I. Filling cavities in teeth, as fillings, inlays and/or onlays II. Filling gaps (diastemas) between teeth using a shell-like veneer or III. Reshaping of teeth IV. Full or partial crowns on single teeth V. Bridges spanning 2-3 teeth
- 14. Method and clinical application of Dental composite 1. Cavity preparation and cleaning
- 15. Method and clinical application of Dental composite 2.Tooth surface preparation Acid etch or sand blast
- 16. Method and clinical application of Dental composite 2.Application of the bonding agent
- 17. Method and clinical application of Dental composite 3. Placement of the Dental Composite
- 18. Method and clinical application of Dental composite 3. Finishing ,Polishing And Checking Occlusion Of The Dental Composite