SlideShare a Scribd company logo
Today:
we will talk about all ceramic crown preparation.
DefinitionDefinition
• Non metallic full coverage ceramic
restoration . Restoring the prepared
ant. Teeth functionally & esthetically
• Advantages
Superior esthetic
Excellent translucency
Good tissue response
Conservative reduction of facial
surface
Appearance of restoration influenced
by color of luting agent
DisadvantagesDisadvantages
 Absence of metal substructure
Reduced strength of the restoration
 Significant tooth reduction is necessary
on proximal & lingual surface
 Difficulty in obtaining well fitting margin
* Not effective as retainer for fixed
prosthesis
* Wear observed on functional surface
of natural tooth
* Wear may occur on functional
surfaces of natural teeth that oppose
porcelain restoration
•
 IndicationsIndications
in ant. Teethin ant. Teeth
** Discolored toothDiscolored tooth
** Tooth with enamel defectsTooth with enamel defects
** Fracture teethFracture teeth
** Bilateral proximal decay with incisalBilateral proximal decay with incisal
angle involved (class 4 ).angle involved (class 4 ).
** Unilateral proximal decayUnilateral proximal decay
• ** Excessive attrition toothExcessive attrition tooth
** at rampant cariesat rampant caries
** malformed and rotated teethmalformed and rotated teeth
*functions:*functions:
**All ceramic is used as foundationAll ceramic is used as foundation
restorationrestoration
** for endodontically treated teeth tofor endodontically treated teeth to
overcome esthetic problem associatedovercome esthetic problem associated
with metal post and core systemwith metal post and core system
•ContraindicationContraindication
** With posterior teethWith posterior teeth
** young patientsyoung patients → large pulp,high epithelium→ large pulp,high epithelium
attachmentattachment
** Deep or heavy bitesDeep or heavy bites
Bad habits ( ex. nail biting )Bad habits ( ex. nail biting )
** If occlusal load is unfavorableIf occlusal load is unfavorable
** At long span bridgeAt long span bridge
** when other more conservative rest. iswhen other more conservative rest. is
indicatedindicated
PrecautionsPrecautions
• Over tapered prepared cingulum
→ ↓ Resistance & Retention
→ exert wedge like force thus ↑
stress causing fracture
•Horizontal surface at the junction of
prepared fossa & lingual wall should be
preserved → reduce stresses
• Lingual ridge of canine not completely
reduced → ↑ rotational resistance
Facial reductionFacial reduction
Placing depth orientation groove
Depth of grooves should be 0.8 mm
as at finishing become 1 mm
Reduce the areas between grooves
Two planes in preparation to provide
adequate esthetics without affecting pulp
. 1st
plane is on incisal two third
. 2nd
plane is on one-third
* facial reduction should extend around the
facial-proximal line angles & fade out on the
lingual aspect of the proximal surface
* end of flat end diamond forms shoulder
finishline
Incisal reductionIncisal reduction
• reduction 1.5 : 2 mm clearance to provide
esthetic & adequate strength restoration
• 45 degrees towards lingual surface
• 3 depth grooves approximately 1.3 mm to
allow additional loss during finishing
• tooth structure between the grooves should
be reduced
• Incisal reduction should be perpendicular to
the plane of incisal half of labial reduction
Lingual reductionLingual reduction
Cingulum reduction is done by FootballCingulum reduction is done by Football
shaped diamondshaped diamond
 care should be taken to prevent over atcare should be taken to prevent over at
the junction between cingulum & lingualthe junction between cingulum & lingual
walwal
ll
A short lingual wall reduces the retentionA short lingual wall reduces the retention
of the restorationof the restoration
Proximal reductionProximal reduction
* The shoulder should be at least 1.0 mm
wide
* care should be taken to avoid undercuts at
the junction of axial walls & the shoulder
finish line
Finishing the preparationFinishing the preparation
** All axial surfaces should be smoothed usingAll axial surfaces should be smoothed using
finishing stones & bursfinishing stones & burs
** Roundation of any remaining sharp lineRoundation of any remaining sharp line
angles to avoid porcelain fractureangles to avoid porcelain fracture
** Uniform width of shoulder finish lineUniform width of shoulder finish line
(approximately 1mm ) to resist forces directed(approximately 1mm ) to resist forces directed
from the incisalfrom the incisal
prepared by :prepared by :
Moataz AbodiefMoataz Abodief
Mostafa El-SadicMostafa El-Sadic
Nour MohammedNour Mohammed
Waleed MohammedWaleed Mohammed
Dentistry College ; Assiut UniversityDentistry College ; Assiut University
thanksthanks

More Related Content

What's hot

Immediate denture
Immediate dentureImmediate denture
Immediate denture
Muaiyed Mahmoud Buzayan
 
Complex amalgam restorations
Complex amalgam restorationsComplex amalgam restorations
Complex amalgam restorations
Dr.Swarneet Kakpure
 
Removable partial denture
Removable partial dentureRemovable partial denture
Removable partial denture
ammar905
 
Ferrule effect
Ferrule effectFerrule effect
Ferrule effect
Dr. Rutuja Gawarle
 
Tissue-conditioners
Tissue-conditionersTissue-conditioners
Tissue-conditioners
Parth Thakkar
 
Prosthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete dentureProsthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete denture
KIIT ,BHUBANESWAR
 
Self correcting anomalies
Self correcting anomaliesSelf correcting anomalies
Self correcting anomalies
Dr. Vikrant singh
 
Provisional restoration
Provisional restorationProvisional restoration
Provisional restoration
IAU Dent
 
Restoration of endodontically treated teeth
Restoration of endodontically treated teethRestoration of endodontically treated teeth
Restoration of endodontically treated teeth
Nivedha Tina
 
Complete denture case history
Complete denture case historyComplete denture case history
Complete denture case history
Ravi banavathu
 
Porcelain jacket crown (PJC)
Porcelain jacket crown (PJC)Porcelain jacket crown (PJC)
Porcelain jacket crown (PJC)
CPGIDSH
 
Cast restorations
Cast restorationsCast restorations
Cast restorations
Deepthi P Ramachandran
 
Obturator ppt
Obturator pptObturator ppt
Obturator ppt
Priyanka Makkar
 
Pin retained amalgam restorations
Pin retained amalgam restorationsPin retained amalgam restorations
Pin retained amalgam restorations
IAU Dent
 
Standardisation of endodontic instruments
Standardisation of endodontic instrumentsStandardisation of endodontic instruments
Standardisation of endodontic instruments
Krishna Naikwade
 
Resin bonded fixed partial denture
Resin bonded fixed partial dentureResin bonded fixed partial denture
Resin bonded fixed partial denture
Azheen Mohamad Kharib
 
Dentinogenic concept
Dentinogenic conceptDentinogenic concept
Dentinogenic concept
Krishna Naikwade
 
Inlays and Onlays
Inlays and OnlaysInlays and Onlays
Inlays and Onlays
Faryal Mangrio
 
Plaque control
Plaque controlPlaque control
Plaque control
IAU Dent
 
Fluid control and Soft tissue management in Prosthodontics
Fluid control and Soft tissue management in ProsthodonticsFluid control and Soft tissue management in Prosthodontics
Fluid control and Soft tissue management in Prosthodontics
Vinay Kadavakolanu
 

What's hot (20)

Immediate denture
Immediate dentureImmediate denture
Immediate denture
 
Complex amalgam restorations
Complex amalgam restorationsComplex amalgam restorations
Complex amalgam restorations
 
Removable partial denture
Removable partial dentureRemovable partial denture
Removable partial denture
 
Ferrule effect
Ferrule effectFerrule effect
Ferrule effect
 
Tissue-conditioners
Tissue-conditionersTissue-conditioners
Tissue-conditioners
 
Prosthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete dentureProsthodontics - realeff relevance in complete denture
Prosthodontics - realeff relevance in complete denture
 
Self correcting anomalies
Self correcting anomaliesSelf correcting anomalies
Self correcting anomalies
 
Provisional restoration
Provisional restorationProvisional restoration
Provisional restoration
 
Restoration of endodontically treated teeth
Restoration of endodontically treated teethRestoration of endodontically treated teeth
Restoration of endodontically treated teeth
 
Complete denture case history
Complete denture case historyComplete denture case history
Complete denture case history
 
Porcelain jacket crown (PJC)
Porcelain jacket crown (PJC)Porcelain jacket crown (PJC)
Porcelain jacket crown (PJC)
 
Cast restorations
Cast restorationsCast restorations
Cast restorations
 
Obturator ppt
Obturator pptObturator ppt
Obturator ppt
 
Pin retained amalgam restorations
Pin retained amalgam restorationsPin retained amalgam restorations
Pin retained amalgam restorations
 
Standardisation of endodontic instruments
Standardisation of endodontic instrumentsStandardisation of endodontic instruments
Standardisation of endodontic instruments
 
Resin bonded fixed partial denture
Resin bonded fixed partial dentureResin bonded fixed partial denture
Resin bonded fixed partial denture
 
Dentinogenic concept
Dentinogenic conceptDentinogenic concept
Dentinogenic concept
 
Inlays and Onlays
Inlays and OnlaysInlays and Onlays
Inlays and Onlays
 
Plaque control
Plaque controlPlaque control
Plaque control
 
Fluid control and Soft tissue management in Prosthodontics
Fluid control and Soft tissue management in ProsthodonticsFluid control and Soft tissue management in Prosthodontics
Fluid control and Soft tissue management in Prosthodontics
 

Viewers also liked

Metal free ceramic/ dental education in india
Metal free ceramic/ dental education in indiaMetal free ceramic/ dental education in india
Metal free ceramic/ dental education in india
Indian dental academy
 
Introduction to fixed prosthodontics
Introduction to fixed prosthodontics Introduction to fixed prosthodontics
Introduction to fixed prosthodontics
Umm Al-Qura University Faculty of Dentistry
 
1. fixed partial denture finals1
1. fixed partial denture finals11. fixed partial denture finals1
1. fixed partial denture finals1
Emjei Mendoza
 
All ceramic restorations
All ceramic restorationsAll ceramic restorations
All ceramic restorations
Hrudi Sahoo
 
Fixed prosthodontics lesson 3
Fixed prosthodontics lesson 3Fixed prosthodontics lesson 3
Fixed prosthodontics lesson 3
dr-Insaf Boushreet
 
Advances in All Ceramic Restorations
Advances in All Ceramic RestorationsAdvances in All Ceramic Restorations
Advances in All Ceramic Restorations
Umm Al-Qura University Faculty of Dentistry
 

Viewers also liked (6)

Metal free ceramic/ dental education in india
Metal free ceramic/ dental education in indiaMetal free ceramic/ dental education in india
Metal free ceramic/ dental education in india
 
Introduction to fixed prosthodontics
Introduction to fixed prosthodontics Introduction to fixed prosthodontics
Introduction to fixed prosthodontics
 
1. fixed partial denture finals1
1. fixed partial denture finals11. fixed partial denture finals1
1. fixed partial denture finals1
 
All ceramic restorations
All ceramic restorationsAll ceramic restorations
All ceramic restorations
 
Fixed prosthodontics lesson 3
Fixed prosthodontics lesson 3Fixed prosthodontics lesson 3
Fixed prosthodontics lesson 3
 
Advances in All Ceramic Restorations
Advances in All Ceramic RestorationsAdvances in All Ceramic Restorations
Advances in All Ceramic Restorations
 

Similar to All ceramic crown preparation seminar

full veneer tooth preparation principals and steps
full veneer tooth preparation principals and stepsfull veneer tooth preparation principals and steps
full veneer tooth preparation principals and steps
Nitai Debnath
 
Class iii cavity preparation
Class iii cavity preparationClass iii cavity preparation
Class iii cavity preparation
ROHITBANSAL154
 
prin of tooth prep
 prin of tooth prep prin of tooth prep
prin of tooth prep
Muhammad Imran
 
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
Indian dental academy
 
Bevels and flares in dental restoration
Bevels and flares in dental restorationBevels and flares in dental restoration
Bevels and flares in dental restoration
Dr. Mayank Nahta
 
Intra & extra coronal restoration resistance form /certified fixed orthodont...
Intra & extra coronal restoration resistance form  /certified fixed orthodont...Intra & extra coronal restoration resistance form  /certified fixed orthodont...
Intra & extra coronal restoration resistance form /certified fixed orthodont...
Indian dental academy
 
Tooth Preparation for full veneer crown
Tooth Preparation for full veneer crown Tooth Preparation for full veneer crown
Tooth Preparation for full veneer crown
NehaPatil396408
 
crown lec1- principles of tooth preparation(v.good)
crown lec1- principles of tooth preparation(v.good)crown lec1- principles of tooth preparation(v.good)
crown lec1- principles of tooth preparation(v.good)
Yahya Almoussawy
 
The partial veneer crown , inlay and onlay.pptx
The partial veneer crown , inlay and onlay.pptxThe partial veneer crown , inlay and onlay.pptx
The partial veneer crown , inlay and onlay.pptx
MuddaAbdo1
 
principles of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptxprinciples of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptx
Himanshu Tiwari
 
principles of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptxprinciples of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptx
DrHIMANSHUTIWARI1
 
Porcelain Fused to Metal Crown in prosthodontics.pptx
Porcelain Fused to Metal Crown in prosthodontics.pptxPorcelain Fused to Metal Crown in prosthodontics.pptx
Porcelain Fused to Metal Crown in prosthodontics.pptx
Hazimrizk1
 
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
Indian dental academy
 
Types of tooth preparations
Types of tooth preparationsTypes of tooth preparations
Types of tooth preparations
Ishani Sharma
 
CERAMIC LAMINATE VENEERS.pptx
CERAMIC LAMINATE VENEERS.pptxCERAMIC LAMINATE VENEERS.pptx
CERAMIC LAMINATE VENEERS.pptx
Royal Dental College Library
 
Principles of tooth preparation
Principles of tooth preparationPrinciples of tooth preparation
Principles of tooth preparation
pragy mallik
 
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
Indian dental academy
 
Stainless steel crown (Dr AMBILI AYILLIATH)
Stainless steel crown (Dr AMBILI AYILLIATH)Stainless steel crown (Dr AMBILI AYILLIATH)
Stainless steel crown (Dr AMBILI AYILLIATH)
MINDS MAHE
 
full coverage restorations.pptx
full coverage restorations.pptxfull coverage restorations.pptx
full coverage restorations.pptx
Akash Raut
 
posterior partial veneer crowns - Kelly
 posterior partial veneer crowns - Kelly posterior partial veneer crowns - Kelly
posterior partial veneer crowns - Kelly
Kelly Norton
 

Similar to All ceramic crown preparation seminar (20)

full veneer tooth preparation principals and steps
full veneer tooth preparation principals and stepsfull veneer tooth preparation principals and steps
full veneer tooth preparation principals and steps
 
Class iii cavity preparation
Class iii cavity preparationClass iii cavity preparation
Class iii cavity preparation
 
prin of tooth prep
 prin of tooth prep prin of tooth prep
prin of tooth prep
 
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
 
Bevels and flares in dental restoration
Bevels and flares in dental restorationBevels and flares in dental restoration
Bevels and flares in dental restoration
 
Intra & extra coronal restoration resistance form /certified fixed orthodont...
Intra & extra coronal restoration resistance form  /certified fixed orthodont...Intra & extra coronal restoration resistance form  /certified fixed orthodont...
Intra & extra coronal restoration resistance form /certified fixed orthodont...
 
Tooth Preparation for full veneer crown
Tooth Preparation for full veneer crown Tooth Preparation for full veneer crown
Tooth Preparation for full veneer crown
 
crown lec1- principles of tooth preparation(v.good)
crown lec1- principles of tooth preparation(v.good)crown lec1- principles of tooth preparation(v.good)
crown lec1- principles of tooth preparation(v.good)
 
The partial veneer crown , inlay and onlay.pptx
The partial veneer crown , inlay and onlay.pptxThe partial veneer crown , inlay and onlay.pptx
The partial veneer crown , inlay and onlay.pptx
 
principles of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptxprinciples of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptx
 
principles of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptxprinciples of tooth preparation - ann george final.pptx
principles of tooth preparation - ann george final.pptx
 
Porcelain Fused to Metal Crown in prosthodontics.pptx
Porcelain Fused to Metal Crown in prosthodontics.pptxPorcelain Fused to Metal Crown in prosthodontics.pptx
Porcelain Fused to Metal Crown in prosthodontics.pptx
 
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...
 
Types of tooth preparations
Types of tooth preparationsTypes of tooth preparations
Types of tooth preparations
 
CERAMIC LAMINATE VENEERS.pptx
CERAMIC LAMINATE VENEERS.pptxCERAMIC LAMINATE VENEERS.pptx
CERAMIC LAMINATE VENEERS.pptx
 
Principles of tooth preparation
Principles of tooth preparationPrinciples of tooth preparation
Principles of tooth preparation
 
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
Metal ceramic and partial veneer crown/certified fixed orthodontic courses by...
 
Stainless steel crown (Dr AMBILI AYILLIATH)
Stainless steel crown (Dr AMBILI AYILLIATH)Stainless steel crown (Dr AMBILI AYILLIATH)
Stainless steel crown (Dr AMBILI AYILLIATH)
 
full coverage restorations.pptx
full coverage restorations.pptxfull coverage restorations.pptx
full coverage restorations.pptx
 
posterior partial veneer crowns - Kelly
 posterior partial veneer crowns - Kelly posterior partial veneer crowns - Kelly
posterior partial veneer crowns - Kelly
 

Recently uploaded

SAR of Medicinal Chemistry 1st by dk.pdf
SAR of Medicinal Chemistry 1st by dk.pdfSAR of Medicinal Chemistry 1st by dk.pdf
SAR of Medicinal Chemistry 1st by dk.pdf
KrushnaDarade1
 
Eukaryotic Transcription Presentation.pptx
Eukaryotic Transcription Presentation.pptxEukaryotic Transcription Presentation.pptx
Eukaryotic Transcription Presentation.pptx
RitabrataSarkar3
 
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Leonel Morgado
 
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Sérgio Sacani
 
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốtmô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
HongcNguyn6
 
ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptxESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
PRIYANKA PATEL
 
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
vluwdy49
 
The cost of acquiring information by natural selection
The cost of acquiring information by natural selectionThe cost of acquiring information by natural selection
The cost of acquiring information by natural selection
Carl Bergstrom
 
Equivariant neural networks and representation theory
Equivariant neural networks and representation theoryEquivariant neural networks and representation theory
Equivariant neural networks and representation theory
Daniel Tubbenhauer
 
Phenomics assisted breeding in crop improvement
Phenomics assisted breeding in crop improvementPhenomics assisted breeding in crop improvement
Phenomics assisted breeding in crop improvement
IshaGoswami9
 
Basics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different formsBasics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different forms
MaheshaNanjegowda
 
Immersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths ForwardImmersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths Forward
Leonel Morgado
 
The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically youngThe debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young
Sérgio Sacani
 
NuGOweek 2024 Ghent programme overview flyer
NuGOweek 2024 Ghent programme overview flyerNuGOweek 2024 Ghent programme overview flyer
NuGOweek 2024 Ghent programme overview flyer
pablovgd
 
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero WaterSharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Texas Alliance of Groundwater Districts
 
Micronuclei test.M.sc.zoology.fisheries.
Micronuclei test.M.sc.zoology.fisheries.Micronuclei test.M.sc.zoology.fisheries.
Micronuclei test.M.sc.zoology.fisheries.
Aditi Bajpai
 
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defectsThe binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
Sérgio Sacani
 
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdfwaterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
LengamoLAppostilic
 
20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx
Sharon Liu
 
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxThe use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
MAGOTI ERNEST
 

Recently uploaded (20)

SAR of Medicinal Chemistry 1st by dk.pdf
SAR of Medicinal Chemistry 1st by dk.pdfSAR of Medicinal Chemistry 1st by dk.pdf
SAR of Medicinal Chemistry 1st by dk.pdf
 
Eukaryotic Transcription Presentation.pptx
Eukaryotic Transcription Presentation.pptxEukaryotic Transcription Presentation.pptx
Eukaryotic Transcription Presentation.pptx
 
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
 
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
 
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốtmô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
 
ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptxESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
 
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
 
The cost of acquiring information by natural selection
The cost of acquiring information by natural selectionThe cost of acquiring information by natural selection
The cost of acquiring information by natural selection
 
Equivariant neural networks and representation theory
Equivariant neural networks and representation theoryEquivariant neural networks and representation theory
Equivariant neural networks and representation theory
 
Phenomics assisted breeding in crop improvement
Phenomics assisted breeding in crop improvementPhenomics assisted breeding in crop improvement
Phenomics assisted breeding in crop improvement
 
Basics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different formsBasics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different forms
 
Immersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths ForwardImmersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths Forward
 
The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically youngThe debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young
 
NuGOweek 2024 Ghent programme overview flyer
NuGOweek 2024 Ghent programme overview flyerNuGOweek 2024 Ghent programme overview flyer
NuGOweek 2024 Ghent programme overview flyer
 
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero WaterSharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
 
Micronuclei test.M.sc.zoology.fisheries.
Micronuclei test.M.sc.zoology.fisheries.Micronuclei test.M.sc.zoology.fisheries.
Micronuclei test.M.sc.zoology.fisheries.
 
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defectsThe binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
 
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdfwaterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
 
20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx
 
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxThe use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
 

All ceramic crown preparation seminar

  • 1.
  • 2. Today: we will talk about all ceramic crown preparation.
  • 3. DefinitionDefinition • Non metallic full coverage ceramic restoration . Restoring the prepared ant. Teeth functionally & esthetically
  • 5. Excellent translucency Good tissue response Conservative reduction of facial surface Appearance of restoration influenced by color of luting agent
  • 6. DisadvantagesDisadvantages  Absence of metal substructure Reduced strength of the restoration  Significant tooth reduction is necessary on proximal & lingual surface  Difficulty in obtaining well fitting margin
  • 7. * Not effective as retainer for fixed prosthesis * Wear observed on functional surface of natural tooth * Wear may occur on functional surfaces of natural teeth that oppose porcelain restoration •
  • 8.  IndicationsIndications in ant. Teethin ant. Teeth ** Discolored toothDiscolored tooth ** Tooth with enamel defectsTooth with enamel defects ** Fracture teethFracture teeth ** Bilateral proximal decay with incisalBilateral proximal decay with incisal angle involved (class 4 ).angle involved (class 4 ). ** Unilateral proximal decayUnilateral proximal decay
  • 9. • ** Excessive attrition toothExcessive attrition tooth ** at rampant cariesat rampant caries ** malformed and rotated teethmalformed and rotated teeth *functions:*functions: **All ceramic is used as foundationAll ceramic is used as foundation restorationrestoration ** for endodontically treated teeth tofor endodontically treated teeth to overcome esthetic problem associatedovercome esthetic problem associated with metal post and core systemwith metal post and core system
  • 10. •ContraindicationContraindication ** With posterior teethWith posterior teeth ** young patientsyoung patients → large pulp,high epithelium→ large pulp,high epithelium attachmentattachment ** Deep or heavy bitesDeep or heavy bites Bad habits ( ex. nail biting )Bad habits ( ex. nail biting ) ** If occlusal load is unfavorableIf occlusal load is unfavorable ** At long span bridgeAt long span bridge ** when other more conservative rest. iswhen other more conservative rest. is indicatedindicated
  • 11.
  • 12. PrecautionsPrecautions • Over tapered prepared cingulum → ↓ Resistance & Retention → exert wedge like force thus ↑ stress causing fracture •Horizontal surface at the junction of prepared fossa & lingual wall should be preserved → reduce stresses
  • 13. • Lingual ridge of canine not completely reduced → ↑ rotational resistance
  • 14. Facial reductionFacial reduction Placing depth orientation groove Depth of grooves should be 0.8 mm as at finishing become 1 mm Reduce the areas between grooves Two planes in preparation to provide adequate esthetics without affecting pulp . 1st plane is on incisal two third . 2nd plane is on one-third
  • 15. * facial reduction should extend around the facial-proximal line angles & fade out on the lingual aspect of the proximal surface * end of flat end diamond forms shoulder finishline
  • 16. Incisal reductionIncisal reduction • reduction 1.5 : 2 mm clearance to provide esthetic & adequate strength restoration • 45 degrees towards lingual surface • 3 depth grooves approximately 1.3 mm to allow additional loss during finishing • tooth structure between the grooves should be reduced • Incisal reduction should be perpendicular to the plane of incisal half of labial reduction
  • 17.
  • 18. Lingual reductionLingual reduction Cingulum reduction is done by FootballCingulum reduction is done by Football shaped diamondshaped diamond  care should be taken to prevent over atcare should be taken to prevent over at the junction between cingulum & lingualthe junction between cingulum & lingual walwal ll A short lingual wall reduces the retentionA short lingual wall reduces the retention of the restorationof the restoration
  • 19.
  • 20. Proximal reductionProximal reduction * The shoulder should be at least 1.0 mm wide * care should be taken to avoid undercuts at the junction of axial walls & the shoulder finish line
  • 21. Finishing the preparationFinishing the preparation ** All axial surfaces should be smoothed usingAll axial surfaces should be smoothed using finishing stones & bursfinishing stones & burs ** Roundation of any remaining sharp lineRoundation of any remaining sharp line angles to avoid porcelain fractureangles to avoid porcelain fracture ** Uniform width of shoulder finish lineUniform width of shoulder finish line (approximately 1mm ) to resist forces directed(approximately 1mm ) to resist forces directed from the incisalfrom the incisal
  • 22. prepared by :prepared by : Moataz AbodiefMoataz Abodief Mostafa El-SadicMostafa El-Sadic Nour MohammedNour Mohammed Waleed MohammedWaleed Mohammed Dentistry College ; Assiut UniversityDentistry College ; Assiut University thanksthanks