• Save
Advances in All Ceramic Restorations
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

Advances in All Ceramic Restorations

on

  • 9,517 views

a presentation on advances of all ceramic restorations, giving some details on dental materials used in esthetic zone.

a presentation on advances of all ceramic restorations, giving some details on dental materials used in esthetic zone.

Statistics

Views

Total Views
9,517
Views on SlideShare
8,124
Embed Views
1,393

Actions

Likes
9
Downloads
0
Comments
0

18 Embeds 1,393

http://dentaldominion.blogspot.com 821
http://bds-bachelorofdentalsurgery.blogspot.com 318
http://dentaldominion.blogspot.in 166
http://dentaldominion.blogspot.ca 39
http://dentaldominion.blogspot.com.au 13
http://dentaldominion.blogspot.ae 10
https://bds-bachelorofdentalsurgery.blogspot.com 6
http://www.dentaldominion.blogspot.com 5
http://www.dentaldominion.blogspot.in 4
http://dentaldominion.blogspot.de 2
http://dentaldominion.blogspot.co.uk 2
http://dentaldominion.blogspot.sk 1
http://dentaldominion.blogspot.jp 1
http://dentaldominion.blogspot.mx 1
http://dentaldominion.blogspot.pt 1
http://bds-bachelorofdentalsurgery.blogspot.com HTTP 1
https://www.blogger.com 1
http://dentaldominion.blogspot.kr 1
More...

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Advances in All Ceramic Restorations Presentation Transcript

  • 1. Alaa AlQutub Umm AlQura University, Faculty of Dentistry
  • 2. Types of materials used in esthetic zone
    • Metal ceramic restoration:
    • Metal ceramic alloy features :
    • Produce surface oxide
    • Coefficient of thermal expansion is greater than that of porcelain veneer
    • Melting range higher than the fusing temperature of dental porcelain.
    • Not distort at firing T. of porcelain
    • Ease of use
    • Biocompatible
  • 3.
    • Classification of dental casting alloys:
    • Based on functi on -> (type I,II,III, IV)
    • Based on color or composition ->
    • yellow golds
    • White golds
    • Low gold
    • High palladium
    • Silver palladium
    • Palladium silver
    • ADA classification :
    • High noble (noble metal content >60 % and gold >40%)
    • Noble (noble metal content >25% )
    • Predominantly base (noble metal content <25%).
  • 4.
    • Chemical components of dental porcelain :
    • Kaolin , Feldspar , Quartz , Alumina
    • Component of dental porcelain kit :
    • Opaque porcelain :
    • Made by addition of insoluble metallic oxides----high refractive indices
    • Thickness of this layer depends on: brand of porcelain and the shade ) Minimum thickness .2mm and the maximum is .5mm (
    • Function: it establish the metal porcelain bond
    • it masks the color of the metal
  • 5.
    • 2 . Dentine porcelain:
    • It correspond in color to the dentin of natural teeth
    • The bulk of the crown is made by it
    • Major determinant for shade
    • It may extend to the incisal one third or occlusal surfaces  
    • 3. Enamel porcelain :
    • More translucent than the dentin porcelain
    • Restricted range of shades
    • Not restricted to one area of a tooth
    • 4. Translucent porcelain:
    • Don’t allow for transmission of all light
    • Applied to the entire surface of the crown
    • Gives depth and natural enamel like translucency
  • 6.
    •  
    • 5. Stains :
    • Contain less silica or alumina more sodium and potassium oxides
    • Mixed with lower fusion point porcelain
    •  
    • 6. Glazes:
    • Colorless low fusing porcelain
    • Fills small surface porosities and irregularities
    • Re creats the glassy appearance of natural tooth
  • 7.
    • Mechanism of bonding :
    • Van der waal forces
    • Mechanical retention
    • Compression bonding
    • Direct chemical bonding
    • Requirements to bond to metal:
    • High CTE
    • It should have slightly lower CTE than that of the alloy
    •  
  • 8.
    • Oxidation:
    • Cleans the metal of organic debris and remove trapped gases
    • It allows specific oxides to form on the metal surface 
    • Over oxidation responsible for bond failure
    •  
    • Post oxidation treatment:
    • For removing oxide layer :
    • Chemical method
    • Mechanical method
  • 9. II . All ceramic materials
    • Aluminous core ceramic:
    • . Composed of aluminum oxide crystal in a glassy matrix.
    • . an opaque inner core composed of(50%) alumina for high strength . this core was veneered with a combination of esthetic body and enamel porcaline.
    • . 40% stronger than traditional porcalin.
    •  
    • Slip cast ceramic(in- ceram):
    • . Used in crowns and veneers
    • . In ceram is about 3-4 times greater than earlier alumina
    • . 2 modified porcalin (in ceram ) :in ceram S pinell(mgal 2o4) - in ceram zirconia(zro2)
    • . Adv :. high strength .high fracture toughness
    • . Dis: fair marginal fit. High enamel abrsiveness
  • 10.  
  • 11.
    • Machined ceramic (CAD/ CAMsystems )
    • Cerec system:
    • consist of computer integrated imaging and milling system at lest 3 materials can be used(vita mark dicor. MGC .procad)
    • Disadvantages : poor marginal fit , lack of sophistication marginal adabtation of cerec 2 is improved and the occ anatomy can be shaped
    • Celay system :
    • uses a copy milling technique to manufature ceramic inlay and onlay
    • Advantages : marginal ccuracy seem to be little better than the cerec 2
    • procera system:
    • advantages : very high fracture togh medium strength
    • Disadvantages : fair marginl fit
    •  
  • 12.
    • Metal reinforced :
    • Types:
    • Captec system and electroformed (produces a thin pure gold coping)
    • Advantages:
    • good marginal fit - excellent esthetic -medium enamel abrasion - medium fracture tough
    • disadvantages :
    • low strength
  • 13.
    •  
    • Indi cation :
    • optimal esthetic need .
    • decrease wear to opposing teeth .
    • conservative abutment prep use of adhesive luting tech.
    • metal free
    • Contraindications :
    • inability to maintaine fluid control .
    • long span needed.
    • pt with parafunctional habit.
    • Unglazed opposing porcelain.
    • Pt who abuse alcohol
    • Advantage : 
    • Good flexure strength and other physical characteristics.
    • FRC is translucent and require no opaque masking.
    • FRC have been to make two –phase all –polymer prostheses (internal glass fiber reinforced composite covered by a particulate composite)
    •  
    •  
    III. Fiber reinforced composites
  • 14.
    • Available materials:
    • Classified according to :
    • 1 . type of fiber ( glass ,polyethylene and carbon )
    • 2 . fiber orientation ( unidirectional , braided and woven )
    • 3 . whether the fiber is impregenated by the dentist or lab:
    • there are available non - impregnated materials (polyethylene weaves and glass weaves). Or preimpregnated material (Vectris , Fiberkor , splint-it ) .
    • 4 . whether the material is formed by hand or with a machine.
  • 15. Tooth Preparation For All Ceramic Restoration
  • 16.
    • Indications:
    • High esthetic requirement
    • The tooth should be relatively intact with suffient coronal structure to support the restoration
    • Favorable distribution of the occlusal load
    • Contraindications:
    • When more conservative restoration can be used
    • Rarely recommended for molar teeth
    •  
  • 17.
    • Preparation:
  • 18.  
  • 19.
    • Preparation steps:
  • 20.  
  • 21.
    • Preparation steps:
  • 22.
    • Difference between preparation of all-Ceramic restorations and other types of preparation especially preparation of fiber-reinforced composite restorations
  • 23. Cast Restorations Intra-Coronal Intra-Radicular Inlays Onlays Post & Core Extra-Coronal All Metal Full Coverage Partial Coverage All Ceramic PFM Modif. ¾ Crown Pin modif ¾ crown Proximal ½ crown 7/8 Crown Revere ¾ Crown ¾ Crown
  • 24. Metal Ceramic preparation (PMF)
  • 25. Partial Coverage
  • 26.  
  • 27.
    • anterior
  • 28.  
  • 29.  
  • 30. Fiber-Reinforced composite FPD
  • 31.  
  • 32.