The final version of the slides from the WD Miller 100th anniversary exhibit. Persons interested in this presentation may also want to visit the image archive from the exhibit. http://flickr.com/photos/rosefirerising/sets/72157601456908704/
Introduction to biomechanics
Biomechanical properties of enamel
Biomechanical properties of dentin
Force resisting structures in enamel
Force resisting properties of dentin
Functional aspects related to forces acting on restorations
Type of tooth contacts
Functional cusps
Non Functional cusps
Areas of stress concentration in anterior teeth
Areas of stress concentrations in posterior teeth
Weak areas in teeth
MECHANICAL PROPERTIES OF RESTORATIVE MATERIALS
Concept of stress and strain
Modulus of Elasticity and Proportional limit
Yeild strength and Ultimate strength
Hardness and Fracture toughness
Time dependent properties- creep
BIOMECHANICAL UNIT
STRESS DISTRIBUTION IN RESTORED TEETH
The structure and composition of teeth is perfectly adapted to the functional demands of the mouth and are superior in comparison to any artificial material…So first of all, DO NO HARM.
POST AND CORE RESTORATIONS
CONTENTS
History
Alterations in endodontically treated teeth
Pre Treatment assessment
Definitions and Classifications
Materials Aspects
Biomechanical principles
Historical Update
20th century: the modern face
1960:Core concept
1961: Ferrule concept
1967: Peter Kurer:Kurer post
1970: Baraban: Parapost
1980: Aesthetic Posts
1990: Duret: Composipost
1994: Sandhaus Pasche: zirconia post
2000 : All Ceramic posts
How are endodontically treated teeth different?
Loss of tooth structure results in loss of stiffness
5% in ideal access cavity
40%- for class II
60%- for MOD
Coronal dentin
Stress bearing areas
Radicular dentin removed
Caries, destruction
How are endodontically treated teeth different?
Altered physical characteristics:
Moisture : 9% less (Helfer et al)
Collagen: Decreased (Rivera et al)
14% reduction in strength
Altered esthetic characteristics
Altered light refraction
Degradation of pulp tissue
Medicaments, fillings
Loss of proprioception
Indications: why do we need posts?
Resistance
Retention
PRE TREATMENT ASSESSMENT
Endodontic evaluation
Periodontal evaluation
Restorative evaluation
Esthetic evaluation
Prosthetic evaluation
Endodontic evaluation
Dense uniform three dimensional obturation of the root canal system.
Fluid impervious apical seal.
Periodontal evaluation
Periodontal disease should be treated prior to placement of definitive restorations.
If there is substantial loss of tooth structure, crown lengthening procedures should be considered to maintain the BIOLOGIC WIDTH.
Any destruction in this width leads to resorption of the alveolar crest, which is not desirable.
Biologic width relates to the amount of tooth structure coronal to the osseous crest upto the gingival attachment apparatus. It is about 2.04mm.
Restorative evaluation
Amount of remaining tooth structure
Anatomical position of the tooth
Functional load on tooth
Esthetic evaluation
Must be done before initiation of post endodontic therapy.
Discoloration from gutta percha can be visible in the coronal aspects of root filled teeth.
Tooth coloured posts should be used in anterior regions.
Prosthetic Evaluation
Extent of tooth destruction.
Method and material used in core build up.
Anterior teeth
Minimal damage: no complete coverage
Composite resin, GIC
Moderate to severe damage:
Post n core, full coverage crown
(Smith and Schuman)
Esthetic considerations
Type of canal
Posterior teeth
Require occlusal coverage
Minimal damage
Moderate damage:
Cuspal coverage
Full coverage
Pin retained amalgam
Severe damage
BASIC COMPONENTS OF A POST AND CORE SYSTEM
DEFINITIONS (GPT)
POST/ DOWEL is a relatively rigid, restorative material placed in the root of the non vital teeth. The foremost purpose
Description :
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
Introduction to biomechanics
Biomechanical properties of enamel
Biomechanical properties of dentin
Force resisting structures in enamel
Force resisting properties of dentin
Functional aspects related to forces acting on restorations
Type of tooth contacts
Functional cusps
Non Functional cusps
Areas of stress concentration in anterior teeth
Areas of stress concentrations in posterior teeth
Weak areas in teeth
MECHANICAL PROPERTIES OF RESTORATIVE MATERIALS
Concept of stress and strain
Modulus of Elasticity and Proportional limit
Yeild strength and Ultimate strength
Hardness and Fracture toughness
Time dependent properties- creep
BIOMECHANICAL UNIT
STRESS DISTRIBUTION IN RESTORED TEETH
The structure and composition of teeth is perfectly adapted to the functional demands of the mouth and are superior in comparison to any artificial material…So first of all, DO NO HARM.
POST AND CORE RESTORATIONS
CONTENTS
History
Alterations in endodontically treated teeth
Pre Treatment assessment
Definitions and Classifications
Materials Aspects
Biomechanical principles
Historical Update
20th century: the modern face
1960:Core concept
1961: Ferrule concept
1967: Peter Kurer:Kurer post
1970: Baraban: Parapost
1980: Aesthetic Posts
1990: Duret: Composipost
1994: Sandhaus Pasche: zirconia post
2000 : All Ceramic posts
How are endodontically treated teeth different?
Loss of tooth structure results in loss of stiffness
5% in ideal access cavity
40%- for class II
60%- for MOD
Coronal dentin
Stress bearing areas
Radicular dentin removed
Caries, destruction
How are endodontically treated teeth different?
Altered physical characteristics:
Moisture : 9% less (Helfer et al)
Collagen: Decreased (Rivera et al)
14% reduction in strength
Altered esthetic characteristics
Altered light refraction
Degradation of pulp tissue
Medicaments, fillings
Loss of proprioception
Indications: why do we need posts?
Resistance
Retention
PRE TREATMENT ASSESSMENT
Endodontic evaluation
Periodontal evaluation
Restorative evaluation
Esthetic evaluation
Prosthetic evaluation
Endodontic evaluation
Dense uniform three dimensional obturation of the root canal system.
Fluid impervious apical seal.
Periodontal evaluation
Periodontal disease should be treated prior to placement of definitive restorations.
If there is substantial loss of tooth structure, crown lengthening procedures should be considered to maintain the BIOLOGIC WIDTH.
Any destruction in this width leads to resorption of the alveolar crest, which is not desirable.
Biologic width relates to the amount of tooth structure coronal to the osseous crest upto the gingival attachment apparatus. It is about 2.04mm.
Restorative evaluation
Amount of remaining tooth structure
Anatomical position of the tooth
Functional load on tooth
Esthetic evaluation
Must be done before initiation of post endodontic therapy.
Discoloration from gutta percha can be visible in the coronal aspects of root filled teeth.
Tooth coloured posts should be used in anterior regions.
Prosthetic Evaluation
Extent of tooth destruction.
Method and material used in core build up.
Anterior teeth
Minimal damage: no complete coverage
Composite resin, GIC
Moderate to severe damage:
Post n core, full coverage crown
(Smith and Schuman)
Esthetic considerations
Type of canal
Posterior teeth
Require occlusal coverage
Minimal damage
Moderate damage:
Cuspal coverage
Full coverage
Pin retained amalgam
Severe damage
BASIC COMPONENTS OF A POST AND CORE SYSTEM
DEFINITIONS (GPT)
POST/ DOWEL is a relatively rigid, restorative material placed in the root of the non vital teeth. The foremost purpose
Description :
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
die and die materials are important in fixed partial dentures, to get the accuracy. this seminar describes die materials, its ideal requirements, and various die systems available.
dentowoman03@gmail.com
visit my youtube channel : dentowoman
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
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.
ADA SPECIFICATION NUMBER- 96.
Zinc phosphate is the oldest of the luting cements and thus serves as a standard with which newer cements can be compared
Techniques of direct composite restorationMrinaliniDr
Techniques of the direct composite restoration. Includes different instruments, matrix system, wedges, bevel, etching, bonding, and placement of composite along with finishing and polishing and clinical management
WD Miller, a graduate of the University of Michigan and later student of R. Koch, is significant in the annals of history as the person who discovered the role of microorganisms in the mouth as a contributing cause of caries (dental cavities, or tooth decay). This slide presentation is made available in partial celebration of the 100th anniversary of his death. Revisions and related materials will be made available shortly.
die and die materials are important in fixed partial dentures, to get the accuracy. this seminar describes die materials, its ideal requirements, and various die systems available.
dentowoman03@gmail.com
visit my youtube channel : dentowoman
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
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.
ADA SPECIFICATION NUMBER- 96.
Zinc phosphate is the oldest of the luting cements and thus serves as a standard with which newer cements can be compared
Techniques of direct composite restorationMrinaliniDr
Techniques of the direct composite restoration. Includes different instruments, matrix system, wedges, bevel, etching, bonding, and placement of composite along with finishing and polishing and clinical management
WD Miller, a graduate of the University of Michigan and later student of R. Koch, is significant in the annals of history as the person who discovered the role of microorganisms in the mouth as a contributing cause of caries (dental cavities, or tooth decay). This slide presentation is made available in partial celebration of the 100th anniversary of his death. Revisions and related materials will be made available shortly.
Using the Design Cycle to Create Interdisciplinary Project-based STEM Simulat...Angela DeHart
IB asks us to create a holistic learning environment that teaches students how to apply school-based lessons to the "real" world. As a matter of course math and science teachers often use FACS-based examples to illustrate their subject matter topics. What would happen if there was a focused cross-disciplinary approach to this process? What if the FACS, math and science department used the design cycle to reinforce the STEM concepts embedded in their subject matter?
The Archives for Women in Medicine Projectjmsedgwick
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FREE 8+ Essay Samples in MS Word | PDF. Excellent Graduate School Entrance Essay Examples ~ Thatsnotus. 020 Essay Example Application Format How To Write Grad School Graduate .... 007 Grad School Essay Sample ~ Thatsnotus. Graduate Writing Sample. 8 Graduate School Essay Template - Template Guru. 005 High School Graduation Essay Science Competitions For Students Pics .... Essay to Graduate School | rbadmuseportfolio. College Essay: Graduate school essay sample. 001 Essay Example Graduate School Sample ~ Thatsnotus. Masters Admission Essay How To Write - 6 Tips for Writing a Killer Grad ....
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
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