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Dentin forms in primary, secondary, and tertiary layers. Secondary dentin develops after root formation is complete and deposits more slowly with fewer, wavier tubules. Tertiary dentin forms in reaction to stimuli and has fewer, irregular tubules. Dentin is innervated by nerves that pass through tubules. Clinically, dentin permeability and adhesion of materials depends on its surface and tubule patency. Endodontic treatment success decreases with age as secondary and tertiary dentin decrease the pulp chamber and canal. Dentin tubule occlusion can reduce sensitivity, and mitochondrial DNA within tubules aids forensic identification.
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The periodontium refers to the tissues that surround and support teeth. The periodontal ligament is a specialized connective tissue that connects the tooth root to the inner surface of the alveolar bone. It is made up of collagen fibers, fibroblasts, and contains blood vessels. The periodontal ligament develops from cells of the dental follicle that differentiate into cementoblasts, fibroblasts, and other cells after the root forms and erupts. It contains principal fibers that connect the cementum to bone and resist various forces on the teeth. Other components include cementoblasts, osteoblasts, epithelial cell rests, and defense cells that maintain the periodontium.
Cavity liners and_bases_2
Liners and bases are placed between dentin (or pulp) and a restoration to provide pulpal protection. Liners are thin layers that provide a barrier against residual reactants and oral fluids penetrating between the restoration and tooth. Bases are thicker (1-2mm) and provide additional thermal protection and support restoration forces. The need for liners depends on the restoration material and cavity location/depth. Newer liners focus on chemical protection through sealing and adhesion rather than pulpal medication. The choice of liner depends on remaining dentin thickness and restoration material.
Tarnish and corrosion
This document provides an overview of tarnish and corrosion as they relate to dentistry. It begins with definitions of tarnish as a surface discoloration and corrosion as deterioration of the actual metal. The document then covers the classification of corrosion into chemical/dry corrosion and electrochemical/wet corrosion. Examples of different types of electrochemical corrosion are provided, including galvanic, stress, and concentration cell corrosion. The document concludes with methods to protect against corrosion, such as passivation, increasing noble metal content, polishing, and avoiding dissimilar metal restorations.
Anatomical landmarks of mandibule
The document discusses several important anatomical landmarks of the mandible relevant for denture construction. These include the lingual frenum, alveolingual sulcus, retromolar pad, pterygomandibular raphe, supporting structures like the buccal shelf area and residual alveolar ridge. It also describes relief areas that need space in the denture like the mylohyoid ridge, mental foramen, genial tubercles and torus mandibularis to avoid pressure and trauma. Understanding these structures helps determine denture borders, extensions and areas requiring relief to ensure proper fit and patient comfort.
Dental amalgam properties
Microleakage, Corrosion, Dimensional changes, thermal and biological Properties of dental Amalgam have been discussed
Regressive alterations of teeth
This document discusses various non-carious lesions of teeth including attrition, abrasion, erosion, abfraction, dentinal sclerosis, dead tracts, secondary dentin, pulp stones, hypercementosis, and cementicles. It defines each lesion, describes the etiology and pathogenesis, and highlights key clinical features. Attrition is mechanical wear of teeth from tooth contact while abrasion is caused by external frictional forces. Erosion results from chemical dissolution of tooth structure by acids. Abfraction involves stress-induced cervical lesions. Dentinal sclerosis and dead tracts are age-related changes in dentin. Secondary dentin deposition occurs in response to stimuli. Pulp stones, hypercementosis and
Periodontium
The periodontium consists of cementum, the periodontal ligament (PDL), alveolar bone, and gingiva surrounding the tooth. The PDL is a specialized connective tissue between cementum and alveolar bone that functions to support the teeth, absorb chewing forces, provide sensory feedback, and enable nutrient transport. It contains collagen fiber bundles arranged to withstand forces. Cementum is a hard, avascular tissue covering roots that provides attachment for collagen fibers. The alveolar bone forms the tooth sockets and contains the PDL. Molecular factors regulate tissue development and regeneration.
Strength and creep of dental amalgam
The document discusses the properties of dental amalgam materials used for fillings. It notes that amalgam is strongest in compression but weaker in tension and shear. It also discusses the importance of strength and creep resistance for amalgam alloys, listing typical compressive and tensile strength values. The document describes factors that influence the strength and creep of amalgam, and methods for testing these properties.
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The periodontium refers to the tissues that surround and support teeth. The periodontal ligament is a specialized connective tissue that connects the tooth root to the inner surface of the alveolar bone. It is made up of collagen fibers, fibroblasts, and contains blood vessels. The periodontal ligament develops from cells of the dental follicle that differentiate into cementoblasts, fibroblasts, and other cells after the root forms and erupts. It contains principal fibers that connect the cementum to bone and resist various forces on the teeth. Other components include cementoblasts, osteoblasts, epithelial cell rests, and defense cells that maintain the periodontium.
Cavity liners and_bases_2
Liners and bases are placed between dentin (or pulp) and a restoration to provide pulpal protection. Liners are thin layers that provide a barrier against residual reactants and oral fluids penetrating between the restoration and tooth. Bases are thicker (1-2mm) and provide additional thermal protection and support restoration forces. The need for liners depends on the restoration material and cavity location/depth. Newer liners focus on chemical protection through sealing and adhesion rather than pulpal medication. The choice of liner depends on remaining dentin thickness and restoration material.
Tarnish and corrosion
This document provides an overview of tarnish and corrosion as they relate to dentistry. It begins with definitions of tarnish as a surface discoloration and corrosion as deterioration of the actual metal. The document then covers the classification of corrosion into chemical/dry corrosion and electrochemical/wet corrosion. Examples of different types of electrochemical corrosion are provided, including galvanic, stress, and concentration cell corrosion. The document concludes with methods to protect against corrosion, such as passivation, increasing noble metal content, polishing, and avoiding dissimilar metal restorations.
Anatomical landmarks of mandibule
The document discusses several important anatomical landmarks of the mandible relevant for denture construction. These include the lingual frenum, alveolingual sulcus, retromolar pad, pterygomandibular raphe, supporting structures like the buccal shelf area and residual alveolar ridge. It also describes relief areas that need space in the denture like the mylohyoid ridge, mental foramen, genial tubercles and torus mandibularis to avoid pressure and trauma. Understanding these structures helps determine denture borders, extensions and areas requiring relief to ensure proper fit and patient comfort.
Dental amalgam properties
Microleakage, Corrosion, Dimensional changes, thermal and biological Properties of dental Amalgam have been discussed
Regressive alterations of teeth
This document discusses various non-carious lesions of teeth including attrition, abrasion, erosion, abfraction, dentinal sclerosis, dead tracts, secondary dentin, pulp stones, hypercementosis, and cementicles. It defines each lesion, describes the etiology and pathogenesis, and highlights key clinical features. Attrition is mechanical wear of teeth from tooth contact while abrasion is caused by external frictional forces. Erosion results from chemical dissolution of tooth structure by acids. Abfraction involves stress-induced cervical lesions. Dentinal sclerosis and dead tracts are age-related changes in dentin. Secondary dentin deposition occurs in response to stimuli. Pulp stones, hypercementosis and
Periodontium
The periodontium consists of cementum, the periodontal ligament (PDL), alveolar bone, and gingiva surrounding the tooth. The PDL is a specialized connective tissue between cementum and alveolar bone that functions to support the teeth, absorb chewing forces, provide sensory feedback, and enable nutrient transport. It contains collagen fiber bundles arranged to withstand forces. Cementum is a hard, avascular tissue covering roots that provides attachment for collagen fibers. The alveolar bone forms the tooth sockets and contains the PDL. Molecular factors regulate tissue development and regeneration.
Strength and creep of dental amalgam
The document discusses the properties of dental amalgam materials used for fillings. It notes that amalgam is strongest in compression but weaker in tension and shear. It also discusses the importance of strength and creep resistance for amalgam alloys, listing typical compressive and tensile strength values. The document describes factors that influence the strength and creep of amalgam, and methods for testing these properties.
Alveolar bone
The document discusses the alveolar bone, including its definition, components, development, structure, clinical applications, and appearance on x-rays. It notes that the alveolar bone contains the tooth sockets and supports the teeth. The alveolar bone proper surrounds the tooth root and is perforated by Volkmann's canals. The supporting alveolar bone consists of cortical plates and spongy bone between the plates and alveolar bone proper. The alveolar bone undergoes remodeling and modeling during tooth movement and in response to functional forces.
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.
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.
GLASS INOMER CEMENT GIC
Glass ionomer cement was developed in the 1970s as a dental restorative material. It consists of a powder made of glass particles containing fluoride and an acidic liquid such as polyacrylic acid. The powder and liquid react via an acid-base reaction during setting to form the cement. The cement releases fluoride over time and bonds chemically to tooth structure. It has advantages such as fluoride release, adhesion to tooth, and biocompatibility, though it is more brittle than dental composites. Many variations of glass ionomer cement have since been developed.
Alveolar bone
Alveolar bone is the specialized bone that forms the sockets for teeth in the maxilla and mandible. It consists of alveolar bone proper surrounding the tooth root, supporting alveolar bone made of cortical plates and spongy bone, and bundle bone where periodontal ligament fibers insert. Osteoblasts build bone matrix while osteoclasts resorb it, allowing remodeling. With age, alveolar bone thins with wider marrow spaces and more fragile trabeculae, leading the alveolar crest to slope down distally as teeth tilt mesially.
Composite resin
Composite materials are made of a resin matrix and filler particles. They have superior properties to their individual components. There are several types of composites classified by filler particle size: macrofilled (8-12 μm), small particle (1-5 μm), microfilled (0.04-0.4 μm), and hybrid (1 μm). Macrofilled composites have the largest particles and produce the roughest surfaces, while microfilled composites have the smallest particles and smoothest surfaces. Hybrid composites have a mixture of particle sizes. The different types have various indications for use depending on their mechanical properties and ability to be polished.
maxillary anatomical landmarks
This document provides an overview of anatomical landmarks in the maxilla that are important for complete denture construction. It discusses intraoral landmarks like the labial and buccal frenums, as well as maxillary arch structures like the residual alveolar ridge, hard palate, palatal rugae, incisive papilla, hamular notch, maxillary tuberosity, and fovea palatinae that serve as stress bearing or relief areas. The document emphasizes understanding the histology and functions of these structures to ensure dentures are designed and placed to avoid placing undue pressure on supporting tissues.
Base metal alloys
The document provides an overview of base metal alloys used in dentistry. It discusses the history and classification of dental casting alloys including cobalt-chromium, nickel-chromium, and titanium-based alloys. The ideal requirements, composition, properties, applications and references of various base metal alloys are described in detail over multiple pages.
Cementum
Cementum is the mineralized connective tissue covering tooth roots. It has several functions including anchoring collagen fibers from the periodontal ligament to provide attachment between the tooth and bone. Cementum can be classified based on its location, cellularity, fiber content, and other characteristics. It plays roles in adaptation, repair, and maintaining the periodontium. The cemento-enamel junction describes the interface between cementum and enamel at the cervical portion of the tooth root.
Morphology of primary teeth
The document discusses the morphology of primary teeth. It describes the general features of primary teeth such as their short crowns, thin enamel and dentin layers, and larger pulps close to the surface. It then details the specific characteristics of each primary tooth type. Key differences between primary and permanent teeth are outlined. The clinical significance of understanding primary tooth morphology for procedures like restorations and extractions is also covered.
Dental pulp
Coronal and radicular pulp
Apical foramen
Accessory canal
Functions of dental pulp
Components of dental pulp
Functions of pulpal extracellular matrix
Organization of cells in the pulp
The principle cells of the pulp
The pathways of collagen synthesis
Matrix and ground substances
Vasculature and lymphatic supply
Innervation of Dentin- pulp complex
Disorders of the dental pulp
Advances in pulp vitality testing
Biocompatibility of dental materials- kelly
The document discusses the biocompatibility of dental materials. It defines biocompatibility as the ability of a material to elicit an appropriate biological response. A number of factors determine the biocompatibility of a dental material, including its ability to avoid toxicity, immunotoxicity, allergic reactions, and other adverse effects. A variety of in vitro, animal, and human tests are used to measure the biocompatibility of dental materials before clinical use.
Dental Casting alloys
This document discusses casting alloys used in dentistry. It begins with a brief history of casting alloys and their evolution since the 1900s. It then covers the key properties casting alloys must have including biocompatibility, corrosion resistance, hardness, castability and bonding to ceramics. The document classifies casting alloys and discusses commonly used types such as gold alloys, silver-palladium alloys, cobalt-chrome alloys and titanium alloys. It provides details on the composition and characteristics of different alloy groups.
Dental Pulp
The pulp is a soft connective tissue located within the tooth. It has several unique features, including being surrounded by rigid dentin walls and susceptible to changes in pressure. The pulp contains odontoblasts, fibroblasts, undifferentiated cells, and defense cells. It is highly vascularized and innervated. During development, dental papilla forms the pulp through proliferation and differentiation of cells. The pulp cavity is divided into coronal and radicular regions. Nerves and blood vessels enter through the apical foramen, supplying the pulp.
Occlusal planes and compensating curves
A detailed review on two very important topics in the field of dentistry used in case of processing a dental prosthesis.
Dental Pulp
The document discusses the dental pulp, including its development, structure, cells, and features. It notes that the dental pulp develops from the dental papilla during tooth formation. The pulp contains coronial and radicular regions, with the radicular pulp terminating at the apical foramen. The pulp has histological zones including the odontoblastic layer and cell-rich and cell-poor zones. Key cells include odontoblasts, fibroblasts, and defense cells. Odontoblasts are responsible for dentin formation and are arranged in palisades along the pulp periphery.
Cementum
The document discusses the peridontium and its components, which include the gingiva, periodontal ligament, cementum, and alveolar bone. It focuses on cementum, describing it as a hard connective tissue that covers tooth roots and provides attachment for collagen fibers. Cementum begins forming at the cementoenamel junction and continues to the root apex. It contains cementoblasts and cementocytes that aid in its formation and structure. Cementum comes in cellular and acellular varieties and demonstrates incremental lines from its continuous deposition over time.
Cementum
The document summarizes key aspects of the periodontium, including its components of cementum, periodontal ligament, and alveolar bone. It describes in detail the types of cementum (acellular extrinsic fiber, cellular intrinsic fiber, acellular afibrillar), their formation processes, composition and roles in tooth attachment. Factors regulating cementogenesis like growth factors, collagens and signaling molecules are also discussed. The aging changes and clinical correlations of cementum are presented.
Dentinogenesis
Dentinogenesis is the formation of dentin, which begins before enamel formation. Dentin is formed by odontoblast cells in two phases: first the formation of an organic collagen matrix, followed by deposition of hydroxyapatite crystals. As dentinogenesis begins, odontoblasts elongate and secrete an unmineralized collagen matrix called predentin. Over time, predentin adjacent to the pulp mineralizes and forms dentin while new predentin is deposited, resulting in incremental dentin growth of approximately 4 micrometers per day. Dentinogenesis continues throughout life but slows after eruption.
Eruption of teeth
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Dentin
Here are some suggested du'as before and after studying, and during exams:
Before studying:
اللهم أعني على ذكرك وشكرك وحسن عبادتك
O Allah, help me remember You, be grateful to You and worship You in the best way.
اللهم بارك لي في علمي وزدني من فضلك وانفعني بما علمت
O Allah, bless me in my knowledge, increase me in Your bounty and benefit me with what I
Histology of dentin
The document summarizes the structure and composition of dentin. It discusses the different types of dentin - primary, secondary, tertiary - and their locations and functions. It also describes odontoblasts, the cells responsible for dentin formation, and dentinal tubules, the structures that span the thickness of dentin.
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Alveolar bone
The document discusses the alveolar bone, including its definition, components, development, structure, clinical applications, and appearance on x-rays. It notes that the alveolar bone contains the tooth sockets and supports the teeth. The alveolar bone proper surrounds the tooth root and is perforated by Volkmann's canals. The supporting alveolar bone consists of cortical plates and spongy bone between the plates and alveolar bone proper. The alveolar bone undergoes remodeling and modeling during tooth movement and in response to functional forces.
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.
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.
GLASS INOMER CEMENT GIC
Glass ionomer cement was developed in the 1970s as a dental restorative material. It consists of a powder made of glass particles containing fluoride and an acidic liquid such as polyacrylic acid. The powder and liquid react via an acid-base reaction during setting to form the cement. The cement releases fluoride over time and bonds chemically to tooth structure. It has advantages such as fluoride release, adhesion to tooth, and biocompatibility, though it is more brittle than dental composites. Many variations of glass ionomer cement have since been developed.
Alveolar bone
Alveolar bone is the specialized bone that forms the sockets for teeth in the maxilla and mandible. It consists of alveolar bone proper surrounding the tooth root, supporting alveolar bone made of cortical plates and spongy bone, and bundle bone where periodontal ligament fibers insert. Osteoblasts build bone matrix while osteoclasts resorb it, allowing remodeling. With age, alveolar bone thins with wider marrow spaces and more fragile trabeculae, leading the alveolar crest to slope down distally as teeth tilt mesially.
Composite resin
Composite materials are made of a resin matrix and filler particles. They have superior properties to their individual components. There are several types of composites classified by filler particle size: macrofilled (8-12 μm), small particle (1-5 μm), microfilled (0.04-0.4 μm), and hybrid (1 μm). Macrofilled composites have the largest particles and produce the roughest surfaces, while microfilled composites have the smallest particles and smoothest surfaces. Hybrid composites have a mixture of particle sizes. The different types have various indications for use depending on their mechanical properties and ability to be polished.
maxillary anatomical landmarks
This document provides an overview of anatomical landmarks in the maxilla that are important for complete denture construction. It discusses intraoral landmarks like the labial and buccal frenums, as well as maxillary arch structures like the residual alveolar ridge, hard palate, palatal rugae, incisive papilla, hamular notch, maxillary tuberosity, and fovea palatinae that serve as stress bearing or relief areas. The document emphasizes understanding the histology and functions of these structures to ensure dentures are designed and placed to avoid placing undue pressure on supporting tissues.
Base metal alloys
The document provides an overview of base metal alloys used in dentistry. It discusses the history and classification of dental casting alloys including cobalt-chromium, nickel-chromium, and titanium-based alloys. The ideal requirements, composition, properties, applications and references of various base metal alloys are described in detail over multiple pages.
Cementum
Cementum is the mineralized connective tissue covering tooth roots. It has several functions including anchoring collagen fibers from the periodontal ligament to provide attachment between the tooth and bone. Cementum can be classified based on its location, cellularity, fiber content, and other characteristics. It plays roles in adaptation, repair, and maintaining the periodontium. The cemento-enamel junction describes the interface between cementum and enamel at the cervical portion of the tooth root.
Morphology of primary teeth
The document discusses the morphology of primary teeth. It describes the general features of primary teeth such as their short crowns, thin enamel and dentin layers, and larger pulps close to the surface. It then details the specific characteristics of each primary tooth type. Key differences between primary and permanent teeth are outlined. The clinical significance of understanding primary tooth morphology for procedures like restorations and extractions is also covered.
Dental pulp
Coronal and radicular pulp
Apical foramen
Accessory canal
Functions of dental pulp
Components of dental pulp
Functions of pulpal extracellular matrix
Organization of cells in the pulp
The principle cells of the pulp
The pathways of collagen synthesis
Matrix and ground substances
Vasculature and lymphatic supply
Innervation of Dentin- pulp complex
Disorders of the dental pulp
Advances in pulp vitality testing
Biocompatibility of dental materials- kelly
The document discusses the biocompatibility of dental materials. It defines biocompatibility as the ability of a material to elicit an appropriate biological response. A number of factors determine the biocompatibility of a dental material, including its ability to avoid toxicity, immunotoxicity, allergic reactions, and other adverse effects. A variety of in vitro, animal, and human tests are used to measure the biocompatibility of dental materials before clinical use.
Dental Casting alloys
This document discusses casting alloys used in dentistry. It begins with a brief history of casting alloys and their evolution since the 1900s. It then covers the key properties casting alloys must have including biocompatibility, corrosion resistance, hardness, castability and bonding to ceramics. The document classifies casting alloys and discusses commonly used types such as gold alloys, silver-palladium alloys, cobalt-chrome alloys and titanium alloys. It provides details on the composition and characteristics of different alloy groups.
Dental Pulp
The pulp is a soft connective tissue located within the tooth. It has several unique features, including being surrounded by rigid dentin walls and susceptible to changes in pressure. The pulp contains odontoblasts, fibroblasts, undifferentiated cells, and defense cells. It is highly vascularized and innervated. During development, dental papilla forms the pulp through proliferation and differentiation of cells. The pulp cavity is divided into coronal and radicular regions. Nerves and blood vessels enter through the apical foramen, supplying the pulp.
Occlusal planes and compensating curves
A detailed review on two very important topics in the field of dentistry used in case of processing a dental prosthesis.
Dental Pulp
The document discusses the dental pulp, including its development, structure, cells, and features. It notes that the dental pulp develops from the dental papilla during tooth formation. The pulp contains coronial and radicular regions, with the radicular pulp terminating at the apical foramen. The pulp has histological zones including the odontoblastic layer and cell-rich and cell-poor zones. Key cells include odontoblasts, fibroblasts, and defense cells. Odontoblasts are responsible for dentin formation and are arranged in palisades along the pulp periphery.
Cementum
The document discusses the peridontium and its components, which include the gingiva, periodontal ligament, cementum, and alveolar bone. It focuses on cementum, describing it as a hard connective tissue that covers tooth roots and provides attachment for collagen fibers. Cementum begins forming at the cementoenamel junction and continues to the root apex. It contains cementoblasts and cementocytes that aid in its formation and structure. Cementum comes in cellular and acellular varieties and demonstrates incremental lines from its continuous deposition over time.
Cementum
The document summarizes key aspects of the periodontium, including its components of cementum, periodontal ligament, and alveolar bone. It describes in detail the types of cementum (acellular extrinsic fiber, cellular intrinsic fiber, acellular afibrillar), their formation processes, composition and roles in tooth attachment. Factors regulating cementogenesis like growth factors, collagens and signaling molecules are also discussed. The aging changes and clinical correlations of cementum are presented.
Dentinogenesis
Dentinogenesis is the formation of dentin, which begins before enamel formation. Dentin is formed by odontoblast cells in two phases: first the formation of an organic collagen matrix, followed by deposition of hydroxyapatite crystals. As dentinogenesis begins, odontoblasts elongate and secrete an unmineralized collagen matrix called predentin. Over time, predentin adjacent to the pulp mineralizes and forms dentin while new predentin is deposited, resulting in incremental dentin growth of approximately 4 micrometers per day. Dentinogenesis continues throughout life but slows after eruption.
Eruption of teeth
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
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Dentin
Here are some suggested du'as before and after studying, and during exams:
Before studying:
اللهم أعني على ذكرك وشكرك وحسن عبادتك
O Allah, help me remember You, be grateful to You and worship You in the best way.
اللهم بارك لي في علمي وزدني من فضلك وانفعني بما علمت
O Allah, bless me in my knowledge, increase me in Your bounty and benefit me with what I
Histology of dentin
The document summarizes the structure and composition of dentin. It discusses the different types of dentin - primary, secondary, tertiary - and their locations and functions. It also describes odontoblasts, the cells responsible for dentin formation, and dentinal tubules, the structures that span the thickness of dentin.
Pulpal Reactions to Dental Caries and Dental Proceudres
This document discusses pulpal reactions to various dental procedures and restorative materials. It covers reactions to caries, such as dentin sclerosis, tertiary dentin formation, and inflammatory responses. It also discusses reactions to local anesthetics, restorative procedures like cavity preparation and proximity to the pulp, and restorative materials like resin monomers, calcium hydroxide, and mineral trioxide aggregate. The document provides details on the protective and defensive mechanisms of the pulp as well as factors that influence pulpal irritation and viability.
Dentin
This document provides an overview of dentin, including:
- A brief history of discoveries related to dentin structure.
- Dentinogenesis, the process of dentin formation carried out by odontoblasts. Primary dentin formation beneath the enamel and root dentin formation are described.
- The physical properties, chemical composition, and structural components of dentin including dentinal tubules, predentin, peritubular and intertubular dentin.
- Features such as von Ebner's lines, lines of Schreger, and contour lines of Owen which represent incremental growth patterns in dentin.
Dentin
Dentin is the hard, bony tissue found in teeth beneath the enamel. It contains dentinal tubules that house odontoblastic processes and nerve fibers. Dentin is classified as primary, secondary, or tertiary depending on the time of its development. Primary dentin forms before and during eruption, secondary forms after root formation is complete, and tertiary dentin is produced in reaction to stimuli like attrition or caries. Tertiary dentin can be reactionary or reparative.
Dentin2
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Dentogenesis (http://librosodontologicos.blogspot.com/)
El documento describe los procesos de formación y desarrollo de los dientes. Explica que los dientes se forman a partir de tres elementos: el órgano del esmalte, la papila dental y el folículo dentario. Describe las etapas de la calcificación de los tejidos dentarios como la dentina, el esmalte y el cemento, y cómo estos tejidos se van formando de manera concéntrica alrededor de la pulpa dental. También explica que la forma de la raíz dental está guiada por la vaina de Hertwig durante
Pulp dentin complex
The document provides an overview of the pulp-dentin complex, including dentin and pulp. It discusses the physical and chemical properties of dentin, its structure including dentinal tubules and types of dentin. Dentinogenesis and age-related changes are also covered. The morphology, development, zones and cell types in pulp are summarized. The document establishes that dentin and pulp are embryologically, histologically and functionally the same tissue and should be considered as a complex.
Dentin ^_^
Dentin is the hard, yellowish tissue that makes up the bulk of teeth beneath the enamel. It encloses the dental pulp and is covered by enamel on the crown and cementum on the root. Dentin is composed primarily of hydroxyapatite crystals and collagen fibers, making it harder than bone but softer than enamel. It contains dentinal tubules that extend from the pulp cavity to the outer surface and contain odontoblastic processes and nerves. There are three types of dentin: primary, secondary, and tertiary, which differ in their rates of formation and permeability. Dentin functions to protect the pulp, affect enamel color, absorb shock, and determine tooth shape.
DENTINOGENESIS
Este documento describe la dentinogénesis o formación de dentina. Se explica que la papila dental contiene células especializadas llamadas odontoblastos que comienzan a diferenciarse entre la octava y novena semana de vida fetal. Estas células pasan por tres etapas: elaboración, maduración y calcificación para formar la dentina. La dentina radicular se deposita posteriormente de manera apical bajo la inducción de la vaina epitelial de Hertwig.
Enamel clinical aspect sagar hiwale
This document summarizes a presentation on the structure of enamel and its clinical importance. It discusses the mineral content, direction of rods, and other structural features of enamel. It also covers enamel defects like developmental defects, fluorosis, and tetracycline staining. Finally, it discusses clinical implications such as fluoridation, acid etching, enamel microabrasion, and macroabrasion. The document provides an overview of important enamel structures and properties and their relevance to clinical dentistry.
Dentin pulp complex
The dentin-pulp complex refers to dentin and pulp as a single functional unit, as they are embryologically and histologically related tissues. Dentin and pulp have a common origin from the dental papilla. The pulp contains cells, fibers, and blood vessels surrounded by dentin, which is produced by odontoblast cells located within the pulp. Throughout life, dentin continues to form through the activity of odontoblasts.
7 dentinogenesis
Here are the key types of dentin and their histological features:
- Primary dentin (mantle, circumpulpal) - forms bulk of tooth, contains dentinal tubules
- Mantle dentin - thin layer near pulp, large collagen fibers perpendicular to DEJ
- Circumpulpal dentin - below mantle dentin, smaller collagen fibers parallel to DEJ
- Predentin - unmineralized matrix secreted by odontoblasts
- Secondary dentin - forms with age/stimulation within pulp chamber
- Regular secondary dentin - mild stimulus, uniform deposition on pulp chamber walls
- Irregular/reparative dentin - severe stimulus, localized deposition near exposed dentin
Dentin
This document provides an overview of dentin, including:
- Its history, development, physical and chemical properties, structure, types, and innervation
- Dentinogenesis is the process by which dentin is formed through the secretion and mineralization of an organic matrix by odontoblasts.
- Dentin's main components are hydroxyapatite crystals, collagen fibers, non-collagenous proteins, and water. Its tubular structure and composition provide mechanical strength and sensitivity.
- Different types of dentin include primary, secondary, and tertiary dentin, which vary in their location, thickness, mineralization, and quality.
Age changes in dental tissues bhavan
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Dentin
The document discusses the structure and development of dentin. It describes dentin as the layer beneath enamel that provides shape and structure to teeth. Dentin forms in stages that mirror tooth development from the lamina bud stage through late bell stage. Key features of dentin include dentinal tubules that contain odontoblastic processes and layers like peritubular dentin, intertubular dentin, and predentin near the pulp. Dentin is laid down in primary, secondary, and tertiary forms throughout life.
Pulp irritants and pulpal response to irritants
The document discusses various noxious stimuli that can damage the dental pulp, including microbial, physical, and chemical irritants such as dental caries, trauma, and restorative materials. It also describes the pulp's defensive reactions which include formation of reactionary and reparative dentin to protect the pulp from further damage. Recommended treatments for vital pulp therapy include indirect and direct pulp capping using calcium hydroxide or other medicaments to stimulate hard tissue formation over exposed pulp tissue.
Pulpal reactions to caries and dental procedures
This document discusses pulpal reactions to various dental procedures and materials. It covers:
1. Protective pulpal reactions to dental caries, including decreased dentin permeability, tertiary dentin formation, and inflammatory immune responses.
2. Pulpal reactions to local anesthetics, restorative procedures, and materials can range from reversible inflammation to irreversible pathology depending on factors like pretreatment pulp health, physical/chemical irritation level, and proximity to the pulp.
3. Direct effects of restorative materials include cytotoxic components, while indirect effects involve faulty bonds leading to hypersensitivity or recurrent decay. Conditioning dentin properly during restorations is important to minimize pulpal irritation.
Applied Histology of Pulp and Periradicular Tissues
The document discusses the structure and development of the dental pulp. It begins by describing the pulp as a soft tissue composed of mesenchymal cells and specialized odontoblasts. The close relationship between odontoblasts and dentin results in the pulp-dentin complex. The primary role of the pulp is to produce dentin, but it also functions as a sensory organ. The document then proceeds to discuss pulp embryology and development, pulp anatomy and histology, innervation and sensitivity, aging changes, and other related topics.
age change in dental hard tissue
Aging causes irreversible changes to the dental hard tissues over time. The three main tissues - enamel, dentin, and cementum - all undergo changes as part of the aging process. Enamel becomes less permeable and more discolored with age. Dentin develops more dead tracts and sclerotic dentin. Cementum may experience hypercementosis and the formation of cementicles. The alveolar bone also undergoes resorption, decreasing in height and width over time. These morphological and functional changes to the dental tissues are a natural part of the biological aging process.
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Similar to Reem hussam dentin
Dentin 2
Dentin is the tissue beneath enamel and covers the dental pulp. There are three types of dentin - primary, secondary, and tertiary - which are distinguished based on their formation over time in response to stimuli. Dentin contains microscopic channels called dentinal tubules that connect the pulp cavity to the outer surface. As people age and teeth undergo functional changes, additional dentin forms through secondary and tertiary dentin deposition. Dentin transmits sensory input through the dentinal tubules, likely via the hydrodynamic theory where fluid movement within the tubules stimulates nerve endings and causes sensitivity. Treatments for dentin hypersensitivity aim to occlude the dentinal tubules or disrupt nerve transmission to reduce sensitivity.
Dentin.docx
This document discusses dentinogenesis, the formation of dentin by odontoblasts. It describes the different types of dentin formed at various stages - mantle dentin, primary dentin, secondary dentin, and tertiary dentin. It also discusses the regional distribution and structure of different zones of dentin, including mantle dentin, circumpulpal dentin, secondary dentin, tertiary dentin, predentin, interglobular dentin, and the granular layer of Tomes. Additionally, it compares intratubular and intertubular dentin, and provides notes on sclerotic dentin, dead tracts, incremental lines of Von Ebner and Andersen, lines of primary
DENTIN
Dentin is the hard, bony tissue found underneath the enamel of teeth. It is formed by odontoblast cells in a process called dentinogenesis, which occurs in two phases - organic matrix formation and mineralization. There are different types of dentin based on the time of formation (primary, secondary, tertiary) and relation to dentinal tubules (peritubular, intertubular, intratubular). Dentin contains dentinal tubules that contain odontoblast processes and nerves, and transmit sensations. Theories of dentin sensitivity include the direct nerve stimulation theory, transduction theory, and hydrodynamic theory which suggests that fluid pressure changes in dentinal tubules stimulate nerves to cause
DENTIN
Garima Singh presented on the topic of dentin. Key points included:
- Dentin is the tissue found underneath enamel and makes up the bulk of teeth. It contains dentinal tubules that contain odontoblast processes and connect the pulp chamber.
- Dentin is made up of 70% inorganic material (mainly hydroxyapatite), 20% organic material (mainly type I collagen), and 10% water. It undergoes dentinogenesis through collagen matrix formation and mineralization.
- There are different types of dentin, including primary, secondary, and tertiary dentin which are formed at different stages. Characteristics like tubule orientation and mineralization differ between primary and permanent dentin
20.dentin.pptx
Dentin is the mineralized tissue that forms most of the tooth. It is softer than enamel but harder than bone and cementum. Dentin consists of mineralized collagen and closely packed dentinal tubules that contain odontoblastic processes. Dentin is formed by odontoblasts, which deposit an organic matrix that then mineralizes. There are different types of dentin formed at various stages, including primary, secondary, and tertiary dentin formed in response to stimuli. The properties and microstructure of dentin can provide information in forensic dentistry applications.
2. Dentin.pptx
This document provides an overview of dentin, including its composition, formation process (dentinogenesis), physical properties, histology, types, innervation, and age-related changes. It discusses the differences between primary and permanent dentin, infected vs affected dentin, the smear layer, and dentin bonding systems. The document concludes with a brief discussion of the role of dentin in forensic odontology. Key points include that dentin is a mineralized tissue containing dentinal tubules that contain odontoblast processes, and its formation involves both collagen matrix formation and subsequent mineralization.
DENTIN.pptx
This document provides an overview of dentin, including its physical, chemical, and structural properties. It discusses the types of dentin such as primary, secondary, and tertiary dentin. It describes the development of dentin through odontoblast differentiation and matrix formation followed by mineralization. Key structures of dentin like dentinal tubules, peritubular dentin, and predentin are defined. Theories of pain transmission through dentin and age-related functional changes in dentin are also summarized.
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Dental anatomy
1. The document discusses dental anatomy and physiology, identifying the major structures of teeth including enamel, dentin, cementum, and dental pulp.
2. It describes the primary and secondary dentitions, identifying and classifying teeth by type.
3. The key dental tissues are summarized, outlining their composition, structure, and functions in the oral cavity.
Tooth Dentin and dentinogenesis ppt
This document provides information on dentin, including its composition, formation, and types. Some key points:
- Dentin makes up the bulk of the tooth and is composed of 65% inorganic material (mainly hydroxyapatite) and 35% organic material (collagen and proteoglycans).
- Odontoblasts are cells responsible for dentin formation. Their processes extend into dentinal tubules that permeate the dentin.
- Dentin formation begins with predentin, which mineralizes to become circumpulpal dentin. Mantle dentin forms the outer layer near the enamel.
- Dentinal tubules contain peritubular dentin and connect the
Dental Trauma.pptx
The document provides information on dental anatomy, trauma, and emergencies. It describes the basic anatomy of teeth including the crown, root, and pulp. It outlines the primary and permanent dentition. Dental tissues including enamel, dentin, cementum, and pulp are discussed. Tooth fractures are classified using the Ellis system. Management of specific dental traumas such as luxations, avulsions, and infections is covered. The role of the emergency physician in treating dental emergencies is emphasized.
Anatomy of tooth
There are two sets of teeth - primary (deciduous) and secondary (permanent). A tooth consists of three parts - the anatomic crown, root, and pulp chamber. Teeth are made up of four main tissues - enamel, dentin, cementum, and dental pulp. The oral cavity environment can lead to demineralization of teeth if the pH drops too low, but remineralization can occur when the pH returns to neutral levels, aided by minerals in saliva. Proper dental anatomy and physiology knowledge is important for understanding oral health.
null.pptx
The document discusses the dentin pulp complex and its reaction to inflammation. It describes the composition and structure of dentin and pulp, as well as their functions. When exposed to irritants like caries, restorative procedures, or trauma, the dentin pulp complex mounts inflammatory and immune responses to protect the tooth. This includes dentin sclerosis, tertiary dentin formation, and recruitment of inflammatory cells. The degree and type of pulpal inflammation depends on factors like the severity and duration of the irritant.
DENTIN.pptx
Dentin is the hard tissue that forms the bulk of the tooth beneath enamel. It consists of a bone-like matrix with dentinal tubules that contain odontoblast processes and nerves. Dentin is less mineralized than enamel but provides strength and protects the pulp. The three main theories of dentin hypersensitivity are direct neural stimulation, transduction, and the most accepted hydrodynamic theory, which proposes that fluid movement in the dentinal tubules causes mechanical stimulation of intratubular nerves when exposed dentin is subjected to stimuli.
Lect.1 2018 - biological consideration of the enamel and dentine structures ...
Dentin forms the bulk of the tooth and protects the pulp. It provides strength and support to the tooth. Dentin is softer than enamel and contains dentinal tubules that extend from the pulp cavity to the outer surface. The tubules allow for permeability of dentin, which can cause sensitivity if exposed. Different theories explain the hydrodynamic movement of fluid in the tubules that is thought to stimulate nerve endings and cause sensitivity. Dentin is vital for tooth function and different types form throughout life in response to stimuli.
DENTAL PULP AND PULP CAPPING.pptx
Dental pulp is the connective tissue inside teeth. Pulp capping procedures involve placing a medicament over exposed pulp to promote healing and formation of new dentin. Indirect pulp capping retains deep caries near the pulp and seals it off, while direct pulp capping treats small mechanical exposures of the pulp. Calcium hydroxide is commonly used as it promotes dentin bridge formation. Success is indicated by maintained vitality, lack of pain, and minimal inflammation over subsequent appointments.
Dentinogenesis & histology of dentin
Dentinogenesis is the formation of dentin by odontoblast cells that differentiate from dental papilla cells. Odontoblasts first form an uncalcified predentin matrix that then undergoes mineralization. There are two types of primary dentin formed - mantle dentin near the enamel and circumpulpal dentin forming the bulk of the tooth. Dentin has a microscopic structure consisting of dentinal tubules containing odontoblast processes, surrounded by highly mineralized peritubular dentin and less mineralized intertubular dentin.
PULP
The document provides information about dental pulp:
- Dental pulp is the innermost tissue of the tooth that occupies the tooth's central cavity. It is made up of loose connective tissue containing cells, blood vessels, and nerves that enter the pulp chamber and root canals.
- Pulp develops from the dental papilla during tooth formation and provides nutrients and sensation to the tooth. It helps form dentin and supports the tooth structurally.
- With age, the pulp shrinks and has reduced sensitivity as vascularity and cellularity decrease. Calcifications may also form as pulp stones within the tissue.
Dentin
This document provides an overview of dentin, including:
- Its composition, formation process, and physical properties.
- The roles of odontoblasts and other components in dentinogenesis.
- The different types and structures of dentin, such as peritubular and intertubular dentin.
- Features like dentinal tubules, Von Ebner's lines, and the dentinoenamel junction.
- Its clinical significance, including use of the cementodentinal junction as a reference point in root canals.
- Potential developmental irregularities below the enamel-dentin junction that could predispose to caries.
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Reem hussam dentin
- 1. Dentin
- 2. Topics Formation of New Dentin Pain and pulp-dentin complex Clinical Consideration
- 3. Formation of New Dentin Types of Dentin Primary Secondary Tertiary Reactionary Reparative
- 4. Secondary Dentin • Cause: Aging • Develops after Root Formation is completed. • On entire pulpal surface • The deposition is continuous with primary but: i)slower ii)Fewer tubules iii)Tubules change direction to a more wavy course • In multi-rooted teeth, it’s thicker on the roof and floor of pulp chamber
- 6. Tertiary Dentin • Forms at a localized area in reaction to a stimulus • Dentinal tubules less in number and irregular arrangement • There are 2 types of Tertiary Dentine
- 8. Types of Tertiary Dentin Reactionary Pre-existing odontoblast Reparative Newly differentiated ectomesnchymal cells
- 11. Types of Reparative dentine
- 12. Topics Formation of New Dentin Pain and pulp-dentin complex Clinical Consideration
- 16. Innervation of Dentin • Subodontoplastic plexus of Raschkow • The nerve will loose its mylien sheath then pass between the odontoblasts bodies and enter the dentinal tubules
- 20. Topics Formation of New Dentin Pain and pulp-dentin complex Clinical Consideration
- 21. Clinical considerations 1. Permeability of dentin 2. Response to external stimuli 3. Adhesion of dental materials to dentin 4. Endodontics 5. Sensitivity 6. Forensic Dentistry
- 22. Permeability of Dentin Depends on: Dentin surface (exposed by) Caries Attrition Abrasion trauma Tubules (patent or occluded) Exogenous material Intertubular dentin Tertiary Dentin
- 23. Adhesion of Dental materials to dentin
- 24. Endodontics • With age, secondary and tertiary dentin are formed causing obliteration to the pulp chamber and root canal • Treatment and prognosis in older patients is less effective
- 25. Sensitivity • Reduction of sensitivity by occluding patent dentinal tubules by precipitation of crystalline oxalates
- 26. Forensic Dentistry • Dry teeth of unknown dead body contain mitochondrial DNA of the interatubular nerve which are protected within the tubules could help in identification of the dead body.
- 27. Topics Formation of New Dentin Pain and pulp-dentin complex Clinical Consideration
- 28. • Made by: Reem Hussam (83) Section 2