Shade selection in dentistry.
Hue, Chroma, Value.
Munsell color system, CIELAB color system.
Optical characteristics of natural teeth
shade matching.
illumination and sources.
VITA shade guide.
Colour and Shade Selection in dental practiseSNEHA RATNANI
Shade selection is an extremely important aspect of aesthetic dentistry.One must have thorough knowledge of colour and shade selection before carrying out any restorative procedures in patients mouth. A brief seminar on colour and shade selection has been penned down here. Hope it helps u fetch some information regarding shade selection and colour in dentistry.
Major challenges in cosmetic dentistry are to accomplish appropriate and satisfactory reproduction of natural shade of teeth.1
The kind of shade guide, individual ability to choose shades and conditions the choice is made under, all have influence on reliability and accuracy of the procedure.
Shade selection in dental practice is an important but difficult task.
Dentists are challenged to satisfy the aesthetic requirement of patients when they select the shades for fabrication of prosthesis. Most dentists are usually not trained for shade selection.2
Accurate shade selection that allows restorations to match the natural dentition positively influences the patients appearance and esthetic self-esteem.
Patients are demanding contemporary esthetic dentistry, which has prompted the industry to continuously raise the bar with regard to esthetic detail
This document discusses shade matching in fixed prosthodontics. It begins with an introduction to the importance of shade matching for esthetic restorations. It then covers topics related to light and color, including the visible light spectrum, color perception, and color measurement systems. The document discusses factors that affect shade matching like the type of light, hydration of the tooth, and observer variability. Methods of shade matching involving comparison tabs and dividing the tooth into regions are presented. Factors influencing accurate shade selection are also summarized.
This document discusses shade selection and communication between dentists and dental laboratories. It begins with an introduction to color science concepts like hue, value, chroma, and color mixing systems. It then describes common shade guides like Vita Classic and Vita 3D-Master and how to use them. Electronic shade matching devices and shade distribution charts are also introduced. Principles of shade selection and factors affecting color perception are outlined. The responsibilities of dentists and laboratories are defined, including the importance of clear communication of shade and details in work authorizations. Custom shade matching techniques using resin kits are presented to improve color matching between clinicians and technicians.
OPTICAL PROPERTIES OF DENTAL MATERIALS AND SHADE SELECTIONHri M
This presentation describes the optical properties of dental materials, the different types of colour models, how colour is produced, dimensions of colour, problems in colour perception, shade guides available in markets and rules in shade selection
International Caries Detection and Assessment System (ICDAS)Ghada Elmasuri
The document outlines the International Caries Detection and Assessment System (ICDAS). It begins with an introduction to caries assessment systems and outlines some of their shortcomings. It then discusses ICDAS in more detail, noting that it was developed based on a review of existing systems to provide a standardized international system. The document provides insights into ICDAS, discussing its future and conclusions. It also includes slides on measuring dental caries and reviewing other caries assessment systems such as DMF, Nyvad, and CAST.
Colour and Shade Selection in dental practiseSNEHA RATNANI
Shade selection is an extremely important aspect of aesthetic dentistry.One must have thorough knowledge of colour and shade selection before carrying out any restorative procedures in patients mouth. A brief seminar on colour and shade selection has been penned down here. Hope it helps u fetch some information regarding shade selection and colour in dentistry.
Major challenges in cosmetic dentistry are to accomplish appropriate and satisfactory reproduction of natural shade of teeth.1
The kind of shade guide, individual ability to choose shades and conditions the choice is made under, all have influence on reliability and accuracy of the procedure.
Shade selection in dental practice is an important but difficult task.
Dentists are challenged to satisfy the aesthetic requirement of patients when they select the shades for fabrication of prosthesis. Most dentists are usually not trained for shade selection.2
Accurate shade selection that allows restorations to match the natural dentition positively influences the patients appearance and esthetic self-esteem.
Patients are demanding contemporary esthetic dentistry, which has prompted the industry to continuously raise the bar with regard to esthetic detail
This document discusses shade matching in fixed prosthodontics. It begins with an introduction to the importance of shade matching for esthetic restorations. It then covers topics related to light and color, including the visible light spectrum, color perception, and color measurement systems. The document discusses factors that affect shade matching like the type of light, hydration of the tooth, and observer variability. Methods of shade matching involving comparison tabs and dividing the tooth into regions are presented. Factors influencing accurate shade selection are also summarized.
This document discusses shade selection and communication between dentists and dental laboratories. It begins with an introduction to color science concepts like hue, value, chroma, and color mixing systems. It then describes common shade guides like Vita Classic and Vita 3D-Master and how to use them. Electronic shade matching devices and shade distribution charts are also introduced. Principles of shade selection and factors affecting color perception are outlined. The responsibilities of dentists and laboratories are defined, including the importance of clear communication of shade and details in work authorizations. Custom shade matching techniques using resin kits are presented to improve color matching between clinicians and technicians.
OPTICAL PROPERTIES OF DENTAL MATERIALS AND SHADE SELECTIONHri M
This presentation describes the optical properties of dental materials, the different types of colour models, how colour is produced, dimensions of colour, problems in colour perception, shade guides available in markets and rules in shade selection
International Caries Detection and Assessment System (ICDAS)Ghada Elmasuri
The document outlines the International Caries Detection and Assessment System (ICDAS). It begins with an introduction to caries assessment systems and outlines some of their shortcomings. It then discusses ICDAS in more detail, noting that it was developed based on a review of existing systems to provide a standardized international system. The document provides insights into ICDAS, discussing its future and conclusions. It also includes slides on measuring dental caries and reviewing other caries assessment systems such as DMF, Nyvad, and CAST.
The document discusses principles of tooth preparation for cast restorations. It covers topics such as preparation path, apico-occlusal taper, circumferential tie features for intracoronal and extracoronal preparations, and auxiliary means of retention such as grooves, boxes, and pins. The key goals of preparation design are to provide maximum retention, resistance, and a definitive path of insertion and withdrawal for the restoration. Taper, bevels, flares, and other features are used to achieve an ideal relationship between the casting and tooth for a strong, durable restoration.
This document provides an overview of minimally invasive dentistry (MID), including:
1. MID aims to conserve healthy tooth structure using prevention, remineralization, and minimal intervention. It focuses on performing only necessary dentistry using long-lasting materials.
2. Key principles of MID include disease control, remineralization of early lesions, avoiding removal of excess tooth structure, and using strong, long-lasting materials.
3. Techniques discussed include caries diagnosis/risk assessment, various caries removal methods like air abrasion and lasers, fissure sealants, preventive resin restorations, ART, and chemo-mechanical caries removal.
This document discusses the anatomy of root canals and related structures. It begins with an introduction and overview, then discusses topics like pulp chamber anatomy, root canal classification systems, the apical foramen, accessory foramina, apical constriction, isthmuses, C-shaped canals, and anatomy of individual teeth. It also touches on developmental disturbances and references other research. The overall document provides an in-depth look at root canal anatomy, variations, related structures, and classification systems.
This document discusses guidelines for clinical shade selection, including recommendations for lighting, selection time, patient positioning, tooth condition, selection distance, and use of digital images. It provides details on:
- Using daylight-balanced lighting with a CRI over 90 for optimal color matching
- Allowing sufficient time for multiple shade selections to avoid eye fatigue
- Positioning the patient upright at eye level for natural viewing of teeth
- Ensuring clean, dry tooth surfaces isolated with a rubber dam
- Comparing shades at a distance of 1-2 feet to evaluate value more easily
- Using digital images and diagrams to document shade zones and characteristics for the technician.
The document discusses various shade selection techniques for dental restorations, including using commercial shade guides to select the hue, chroma, and value of the shade by making comparisons under different lighting conditions. It focuses on the Vita Classic shade guide system and the recommended four-step process of hue selection, chroma selection, value selection, and final check/revision. Proper shade selection is important for achieving natural-looking dental restorations that match the colors of a patient's teeth.
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.
Biodentine is a new tricalcium silicate-based restorative cement that can be used as a dentin substitute with superior physical and biological properties compared to MTA. It sets faster than MTA due to the addition of calcium chloride as an accelerator. Upon setting, Biodentine releases calcium ions that stimulate reparative dentin formation and pulp healing. Studies show Biodentine forms a stronger bond to dentin and achieves higher mechanical strengths than MTA, making it suitable for various restorative, endodontic and pulp capping procedures.
This document provides guidelines for preparing class II inlay restorations. It describes initial procedures like evaluating occlusion and administering anesthesia. It discusses preparing the occlusal outline, proximal box, bevels, and flares. Modifications for specific tooth shapes and situations are covered. Preparation variations like slices and flares are explained. Special considerations for abutment teeth and root surface lesions are also summarized. The document provides a thorough overview of class II inlay preparation techniques.
This document discusses adhesion and bonding in dentistry. It begins by introducing the fundamental objective of creating adhesion between tooth structure and restorative materials. It then covers the principles of adhesion, including the different types of adhesion mechanisms. Some key factors and challenges that impact adhesion are surface energy, contact angle, wetting, surface contamination, and water content. The document reviews the history of bonding agents, from early experiments in the 1950s to the development of multi-step bonding systems. It also separates the discussion of enamel bonding agents from dentin bonding agents.
Vital pulp therapy aims to preserve healthy pulp tissue and includes procedures like indirect/direct pulp capping, pulpotomy, and apexification. The goal is to stimulate reparative dentin formation and maintain the tooth as a functional unit. Success depends on factors like the patient's age, pulp chamber size, bacterial contamination, and quality of the restoration. Indirect pulp capping involves stepwise caries removal and capping the remaining dentin layer, while direct capping places a material directly over an exposed pulp. Pulpotomy and apexification procedures are used to treat immature teeth and maintain root development.
This document discusses regressive changes that occur in the pulp and dentin as part of the normal aging process. It begins by covering theories of aging and the roles of oxidative stress and telomeres. It then classifies different regressive changes that can occur in enamel, dentin, pulp, cementum, and resorption of teeth. The document goes on to discuss specific regressive changes in detail, including changes to odontoblasts, the extracellular matrix, dentinogenesis, and degenerative changes in the pulp like reticulation, calcification, and changes to blood vessels and nerves. It concludes by discussing endodontic implications of these regressive changes.
This document discusses dental varnishes. It begins by defining dental varnishes as thin liquid coatings applied to teeth that harden into protective films. It notes they are usually water- or solvent-based for easy application. The document outlines the main requirements for varnishes and their purposes, including protecting teeth from decay by releasing fluoride or antimicrobials, whitening teeth, and desensitizing sensitive areas. It describes different types of varnishes and application techniques. Key varnishes discussed include fluoride varnishes like Duraphat and Carex as well as desensitizing and antimicrobial options. The document reviews advantages of fluoride varnishes and concludes by summarizing a clinical study on treating sensitivity
The document discusses various topics related to wound healing, including:
- The classification, types, and factors that affect wound healing.
- The two main processes in healing are regeneration (restoration of original tissues) and repair (fibrosis and scarring).
- Healing occurs through the stages of inflammation, clearance of debris, and ingrowth of granulation tissue.
- Specific examples discussed include healing of fractures, non-surgical root canals, excisional dentoalveolar wounds, replanted teeth, and dental implants.
- Complications like infection, delayed/non-union can occur if healing is disrupted.
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.
- An inlay is a restoration constructed externally and then cemented into a prepared tooth cavity. An onlay covers one or more cusps and adjoining occlusal surface.
- Indirect restorations like inlays and onlays are used for large restorations, endodontically treated teeth at risk of fracture, and dental rehabilitation with cast metals. They allow for better control of contours compared to direct restorations.
- Disadvantages include requiring more appointments, higher chair time, need for temporary restorations, higher costs, and being more technique sensitive.
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.
Matrices are used in operative dentistry to support and give form to dental restorations during placement and hardening. The document discusses the importance of matrices, their functions and characteristics of a good matrix. It describes different types of matrices including metallic matrices like Tofflemire, automatrix and sectional matrices like Palodent. Techniques for proper matrix selection, adaptation and wedge placement are also covered.
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
This document provides an overview of dental adhesion and dentin bonding. It discusses the basic concepts and requirements of adhesion, applications of adhesive restorative techniques, enamel and dentin adhesion mechanisms, and challenges in dentin bonding. It also summarizes the generations of dentin bonding agents from the beginning in the 1950s to current techniques, noting limitations and improvements over time in bonding strength and stability of the bond. The goal has been to develop adhesive systems that can effectively bond to tooth structure, withstand stresses from polymerization, and resist degradation in the oral cavity.
This document discusses shade selection techniques in dentistry. It defines shade selection and color properties. Factors that influence color perception include the light source, object being viewed, observer, and surrounding structures. Techniques include visual assessment using shade guides or instrumental methods using devices like spectrophotometers. Accuracy is improved by considering the tooth's hydration, region viewed, and background colors. Proper technique, instruments, and composites can help replicate the natural appearance 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.
The document discusses principles of tooth preparation for cast restorations. It covers topics such as preparation path, apico-occlusal taper, circumferential tie features for intracoronal and extracoronal preparations, and auxiliary means of retention such as grooves, boxes, and pins. The key goals of preparation design are to provide maximum retention, resistance, and a definitive path of insertion and withdrawal for the restoration. Taper, bevels, flares, and other features are used to achieve an ideal relationship between the casting and tooth for a strong, durable restoration.
This document provides an overview of minimally invasive dentistry (MID), including:
1. MID aims to conserve healthy tooth structure using prevention, remineralization, and minimal intervention. It focuses on performing only necessary dentistry using long-lasting materials.
2. Key principles of MID include disease control, remineralization of early lesions, avoiding removal of excess tooth structure, and using strong, long-lasting materials.
3. Techniques discussed include caries diagnosis/risk assessment, various caries removal methods like air abrasion and lasers, fissure sealants, preventive resin restorations, ART, and chemo-mechanical caries removal.
This document discusses the anatomy of root canals and related structures. It begins with an introduction and overview, then discusses topics like pulp chamber anatomy, root canal classification systems, the apical foramen, accessory foramina, apical constriction, isthmuses, C-shaped canals, and anatomy of individual teeth. It also touches on developmental disturbances and references other research. The overall document provides an in-depth look at root canal anatomy, variations, related structures, and classification systems.
This document discusses guidelines for clinical shade selection, including recommendations for lighting, selection time, patient positioning, tooth condition, selection distance, and use of digital images. It provides details on:
- Using daylight-balanced lighting with a CRI over 90 for optimal color matching
- Allowing sufficient time for multiple shade selections to avoid eye fatigue
- Positioning the patient upright at eye level for natural viewing of teeth
- Ensuring clean, dry tooth surfaces isolated with a rubber dam
- Comparing shades at a distance of 1-2 feet to evaluate value more easily
- Using digital images and diagrams to document shade zones and characteristics for the technician.
The document discusses various shade selection techniques for dental restorations, including using commercial shade guides to select the hue, chroma, and value of the shade by making comparisons under different lighting conditions. It focuses on the Vita Classic shade guide system and the recommended four-step process of hue selection, chroma selection, value selection, and final check/revision. Proper shade selection is important for achieving natural-looking dental restorations that match the colors of a patient's teeth.
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.
Biodentine is a new tricalcium silicate-based restorative cement that can be used as a dentin substitute with superior physical and biological properties compared to MTA. It sets faster than MTA due to the addition of calcium chloride as an accelerator. Upon setting, Biodentine releases calcium ions that stimulate reparative dentin formation and pulp healing. Studies show Biodentine forms a stronger bond to dentin and achieves higher mechanical strengths than MTA, making it suitable for various restorative, endodontic and pulp capping procedures.
This document provides guidelines for preparing class II inlay restorations. It describes initial procedures like evaluating occlusion and administering anesthesia. It discusses preparing the occlusal outline, proximal box, bevels, and flares. Modifications for specific tooth shapes and situations are covered. Preparation variations like slices and flares are explained. Special considerations for abutment teeth and root surface lesions are also summarized. The document provides a thorough overview of class II inlay preparation techniques.
This document discusses adhesion and bonding in dentistry. It begins by introducing the fundamental objective of creating adhesion between tooth structure and restorative materials. It then covers the principles of adhesion, including the different types of adhesion mechanisms. Some key factors and challenges that impact adhesion are surface energy, contact angle, wetting, surface contamination, and water content. The document reviews the history of bonding agents, from early experiments in the 1950s to the development of multi-step bonding systems. It also separates the discussion of enamel bonding agents from dentin bonding agents.
Vital pulp therapy aims to preserve healthy pulp tissue and includes procedures like indirect/direct pulp capping, pulpotomy, and apexification. The goal is to stimulate reparative dentin formation and maintain the tooth as a functional unit. Success depends on factors like the patient's age, pulp chamber size, bacterial contamination, and quality of the restoration. Indirect pulp capping involves stepwise caries removal and capping the remaining dentin layer, while direct capping places a material directly over an exposed pulp. Pulpotomy and apexification procedures are used to treat immature teeth and maintain root development.
This document discusses regressive changes that occur in the pulp and dentin as part of the normal aging process. It begins by covering theories of aging and the roles of oxidative stress and telomeres. It then classifies different regressive changes that can occur in enamel, dentin, pulp, cementum, and resorption of teeth. The document goes on to discuss specific regressive changes in detail, including changes to odontoblasts, the extracellular matrix, dentinogenesis, and degenerative changes in the pulp like reticulation, calcification, and changes to blood vessels and nerves. It concludes by discussing endodontic implications of these regressive changes.
This document discusses dental varnishes. It begins by defining dental varnishes as thin liquid coatings applied to teeth that harden into protective films. It notes they are usually water- or solvent-based for easy application. The document outlines the main requirements for varnishes and their purposes, including protecting teeth from decay by releasing fluoride or antimicrobials, whitening teeth, and desensitizing sensitive areas. It describes different types of varnishes and application techniques. Key varnishes discussed include fluoride varnishes like Duraphat and Carex as well as desensitizing and antimicrobial options. The document reviews advantages of fluoride varnishes and concludes by summarizing a clinical study on treating sensitivity
The document discusses various topics related to wound healing, including:
- The classification, types, and factors that affect wound healing.
- The two main processes in healing are regeneration (restoration of original tissues) and repair (fibrosis and scarring).
- Healing occurs through the stages of inflammation, clearance of debris, and ingrowth of granulation tissue.
- Specific examples discussed include healing of fractures, non-surgical root canals, excisional dentoalveolar wounds, replanted teeth, and dental implants.
- Complications like infection, delayed/non-union can occur if healing is disrupted.
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.
- An inlay is a restoration constructed externally and then cemented into a prepared tooth cavity. An onlay covers one or more cusps and adjoining occlusal surface.
- Indirect restorations like inlays and onlays are used for large restorations, endodontically treated teeth at risk of fracture, and dental rehabilitation with cast metals. They allow for better control of contours compared to direct restorations.
- Disadvantages include requiring more appointments, higher chair time, need for temporary restorations, higher costs, and being more technique sensitive.
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.
Matrices are used in operative dentistry to support and give form to dental restorations during placement and hardening. The document discusses the importance of matrices, their functions and characteristics of a good matrix. It describes different types of matrices including metallic matrices like Tofflemire, automatrix and sectional matrices like Palodent. Techniques for proper matrix selection, adaptation and wedge placement are also covered.
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
This document provides an overview of dental adhesion and dentin bonding. It discusses the basic concepts and requirements of adhesion, applications of adhesive restorative techniques, enamel and dentin adhesion mechanisms, and challenges in dentin bonding. It also summarizes the generations of dentin bonding agents from the beginning in the 1950s to current techniques, noting limitations and improvements over time in bonding strength and stability of the bond. The goal has been to develop adhesive systems that can effectively bond to tooth structure, withstand stresses from polymerization, and resist degradation in the oral cavity.
This document discusses shade selection techniques in dentistry. It defines shade selection and color properties. Factors that influence color perception include the light source, object being viewed, observer, and surrounding structures. Techniques include visual assessment using shade guides or instrumental methods using devices like spectrophotometers. Accuracy is improved by considering the tooth's hydration, region viewed, and background colors. Proper technique, instruments, and composites can help replicate the natural appearance 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.
This document discusses various aspects of shade selection and color matching in dentistry. It begins with an overview of the Munsell color system and CIElab color system for objectively describing colors. It then covers visual and instrumental shade matching methods and the impact of lighting conditions. Different shade guide systems are described like Vita Classical and 3D-Master. It emphasizes the importance of value, chroma and hue in shade selection. Gingival shade guides and techniques to improve color matching ability are also mentioned. Overall, the document provides a comprehensive review of color science and shade selection principles in prosthodontics.
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
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
This document discusses colour in dentistry and its implications. It covers several key topics:
1. Colour is an important factor in achieving esthetics in restorative dentistry. Matching the colour, contour, texture, and position of a restoration is required.
2. Understanding the scientific principles of colour, light, perception, and how surroundings impact colour is essential for dentists to properly evaluate and select shades.
3. Factors like light quality, age, disease, drugs can impact colour perception. An ideal light for shade matching approximates daylight and has a CRI over 90.
This document discusses various factors that affect esthetics in dentistry. It focuses on smile esthetics and outlines considerations for soft tissue management, tooth preparation, shade selection, color variations, translucency, surface characterization, gloss, tooth form and position. Soft tissue health, impression techniques, temporary restorations and finish line visibility are identified as important for gingival esthetics. Tooth reduction, porcelain thickness and marginal fit also impact color matching and esthetic outcomes.
Journal -Effect of time on tooth dehydration and rehydrationDr ATHUL CHANDRA.M
J Esthet Restor Dent. 2019;1–6
Journal -Effect of time on tooth dehydration and rehydration
Received: 3 February 2019 Revised: 7 February 2019 Accepted: 10 February 2019 DOI: 10.1111/jerd.12461
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.
Color science and optics, PROSTHODONTICS Rahul Gupta
This document summarizes a presentation on color science and optics given by several professors and doctors. It covers topics like the description of color, Munsell and CIELAB color systems, shade matching, human vision, metamerism, fluorescence, opalescence, shade selection systems, guidelines for shade matching, instrumental color analysis, basic shades, and the Cercon ceram kiss shade selection system. The presentation contained information on light and color perception, various color ordering systems, factors that influence shade matching, and techniques and technologies used in shade selection.
This document provides an overview of shade selection in esthetic dentistry. It discusses key aspects of color such as hue, value, chroma. It describes color mixing systems and color measurement systems like Munsell and CIE LAB. Factors that influence tooth color like translucency, fluorescence and surface appearance are covered. Techniques for shade selection including visual guides like Vita Classical and 3D Master as well as instrumental methods like spectrophotometers are summarized. Considerations for using shade guides and limitations of digital techniques are also mentioned. The document concludes with information on custom shade guides that can be made using micrometers or molds.
This document summarizes a literature review on the color of primary teeth. It finds that primary teeth appear to be much more important for esthetics than traditionally thought. The review examines factors that influence tooth color perception and different color notation systems. It also analyzes studies on measuring the color of primary teeth and finding they are generally lighter than permanent teeth. The review concludes more research is needed to improve restorations for primary teeth and account for color variations between individuals.
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
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
Dental records and forensic odontology can be used to identify individuals and aid in criminal investigations. Teeth provide unique and durable evidence because they are resistant to heat, trauma, and decomposition. Forensic dentists examine dental records, bite marks, teeth, and other dental evidence to determine factors like identification, age, sex, and habits. Positive identification relies on sufficient unique dental characteristics matching between ante-mortem and post-mortem records, while exclusions can be as important as identifications. Teeth allow estimation of age through development, wear, and microscopic changes. Sex can be estimated through morphological traits and molecular analysis of cells from teeth. Forensic dentistry is an important tool for justice.
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.
This document provides an overview of esthetic restorative procedures and color matching. It discusses color perception and factors that influence tooth color like hue, value and chroma. Principles of smile design are covered such as visible tooth length, symmetry and proportions. Treatment options for improving esthetics are summarized, including bleaching, microabrasion, bonding and veneers. Key factors in esthetic treatments like color matching and limitations of restorative materials are also mentioned.
This document discusses color and optical effects in dentistry. It begins by explaining the nature of light and how the human eye perceives color. It then discusses how the properties of materials, such as opacity, translucency and roughness, determine how light interacts with objects and affects their appearance. The document also covers color perception in terms of hue, value and chroma. It describes color matching guides and factors that can influence color matching, such as lighting conditions, the observer, and fluorescence. The goal is to help dental professionals achieve optimal esthetic results when matching tooth colors.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
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Answers about how you can do more with Walmart!"
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
2. WHY DO WE NEED TO STUDY THE COLOR OF NATURAL
TEETH?
Recreate
Form
Shape and
Color of teeth
Communicate
Accurate
Details to the
LAB
Scientific
Documentation
and Record
Universal
Communication
and expression
3. What is Color ?
The quality of an object or substance
with respect to light reflected by it.
Usually determined visually by measureme
nt of three properties:
Hue ,
Chroma
Value.
It can also be define as a psychological
response to a physical stimulus.
4. HUE
• Dominant range of wavelengths that yields a
perceived color.
• It is the visual quality which distinguishes one family
from the other
CHROMA
• Degree of saturation of a particular hue and measures
the intensity of color
• Degree of lightness or darkness of a color
• Value of 0 = Black
• Value of 10 = White
VALUE
8. Metamerism
• Objects that appear to be different
colors when viewed in different light
conditions
• More opaque the ceramic --- more
metamerism
Color Corrected 5500k Incandescent source 2896K
Flourescent source 4000K
Translucency
•Transmission and diffusion
of light
Conveys depth and vitality
9. Opalescence
• It’s the ability of the object to appear
• Blue or
• red orange in reflected or transmitted light
• Under direct illumination
• Reflectance of short wavelengths( blue)
• Absorption of long wavelength ( red orange)
• Under Transillumination
• Reflectance of long wavelength ( red orange)
• Absortption of short wavelength ( blue)
• Enamel is more opalescent than dentine
10. Flourescence
• In fluorescent light , teeth absorb
the energy and convert in to light
with longer wavelength.
• Tooth becomes an actual source of
light.
• It emits light of 400-450 nm.
15. REQUIREMENTS OF SHADE MATCHING
• Use correct environment & lighting.
• Shade selected at the beginning of appointments.
• Patient should be sitting upright.
• Dentist should be at a distance of at least 20 cm from teeth.
• Patients teeth and dentist eyes should be at the same level.
16. Illumination & sources
• Daylight ( 6500 K)
• Variable depending the time of the day, cloud cover
• Fluorescent tube lightings produce 5500°K light with CRI of 95%.
• Tungsten/incandescent bulb—2800ºK - 3200ºK and a CRI of 100%
Rite-Lite 2 offers three modes of light for shade
taking:
• Natural daylight at 5500 degreeK
• Incandescent light (indoor) at 3200 degreeK
• Ambient light (combination of indoor and outdoor
light) at 3900 degreeK
20. Study of the most frequent natural tooth colors in the Spanish
population using spectrophotometry
• The study was based on the measurement of the natural tooth color of 1361 maxillary central incisors of Caucasian Spanish
participants (671 men and 690 women) aged between 16 and 89 years and distributed homogeneously according to gender and
age. All participants were asked to read and sign an informed consent form for participation in the study, which was approved by
the Research Ethics Committee of the San Carlos Clinic (Madrid. One clinician (a woman of 30 with 8 years of experience, initials
CGP) made the measurements with the same spectrophotometer (Easyshade Compact; Vita Zahnfabrik) with a standardized
protocol for color evaluation.. All the participants were evaluated at the Department of Prosthodontics, School of Odontology,
Complutense University of Madrid, Spain.
• All recordings were made in the same room under fluorescent tubes with a luminescence intensity of between 1200 and 1500 lux.
The upper central incisor has frequently been used to assess tooth color, as a representative of an individual's natural tooth
color. The natural maxillary central incisors of the participants were healthy, with no restoration and no artificial whitening, and
were cleaned before their color was measured. Before the recordings were made, a hygienic protector was placed on the probe tip
(5 mm in diameter), and the lamp was calibrated. After calibration, the probe tip was placed in contact with and perpendicular to
the middle third of the facial surface of the tooth.
• Color was determined on the middle third of the tooth, which is the area that best illustrates tooth shade. Measurements were
made in Single Tooth mode with Easyshade compact spectrophotometer). The color of the patient's clothes was neutralized with
a gray cloth.. In order to determine the most frequent colors in the different age groups, the participants were recruited into three
groups according to age: between 16 and 30 (young group), between 31 and 59 (middle-aged group), and above the age of 60 and
up to a maximum of 89 (elderly group). These groups were subdivided according to gender.
Most frequent colors in 3D master system
Gender Men (n = 671) Women (n = 690)
Age
groups
16 - 30
years
31 - 59
years
60 - 89
years
16 - 30
years
31 - 59
years
60 - 89
years
Shade tab
(Percentag
e)
1M1.5
(14.56%)
3M1
(10.13%)
4.5M1.5
(8.77%)
1M1.5
(21.66%)
2M1
(10.84%)
3M1
(9.82%)
Shade tab
(Percentag
e)
1M2
(13.59%)
2.5L1.5
(5.91%)
4.5M2.5
(7.89%)
1M1
(13.82%)
2L1.5
(10.04%)
2.5L1.5
(5.80%)
Shade tab
(Percentag
e)
1.5M1.5
(9.71%)
3.5L1.5
(5.06%)
3M1
(4.82%)
2L1.5
(10.14%)
3M1
(10.04%)
3.5M1
(5.36%
21. BIBLIOGRAPHY
Philips
Wikipedia
IDT-Optical characteristics of natural teeth
Vita 3D shade guide instructions
Study of the most frequent natural tooth colors in the
Spanish population using spectrophotometry
Cristina Gómez-Polo, 1 Miguel Gómez-Polo,2 Juan Antonio
Martínez Vázquez de Parga,2 and Alicia Celemín Viñuela2
JCD_Spring2016_ShadeWave.pdf
VITA-Easyshade intructions
www.shadewave.com