1 Clinical Applications of CAD/CAM and All Ceramic Restorations in 2014 Practicing Minimally Invasive Dentistry In light of Current Technologies Practicing Minimally Invasive Dentistry with Durability and Esthetic in Mind Current status of ceramic restorations 50%-80% Glidewell Laboratories Glidewell Laboratories Most commonly suggested all ceramic restorations in 2013 Indications Contraindications Clinical parameters Clinical procedures Suggested products Laboratory communication Commonly Suggested Dental Ceramics A. Lightly filled, high silica, low crystal, so-called feldspathic. B. Heavily filled, low silica, high crystals, i.e. e. max 1. Press 2. CAD C. Polycrystalline, no glass 1. Monolithic 2. Layered
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Clinical Applications of CAD/CAM and All Ceramic Restorations in 2014
Practicing Minimally Invasive Dentistry In light of Current Technologies
Practicing Minimally Invasive Dentistry with Durability
and Esthetic in Mind
Current status of ceramic restorations
50%-80%
Glidewell Laboratories Glidewell Laboratories
Most commonly suggested all ceramic restorations in 2013!
u Indications!u Contraindications!u Clinical parameters !u Clinical procedures!u Suggested products!u Laboratory communication !
Commonly Suggested Dental Ceramics!A. Lightly filled, high silica, low crystal, so-called feldspathic. B. Heavily filled, low silica, high crystals, i.e. e. max 1. Press
2. CAD C. Polycrystalline, no glass
1. Monolithic 2. Layered
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Commonly Suggested Dental Ceramics!
A. Lightly filled, high silica, low crystal, so-called feldspathic.
Minimally Invasive with Etched Ceramic Bonded veneers
Commonly Suggested Dental Ceramics!
B. Heavily filled, low silica, high crystals, i.e. e.max 1. Press
2. CAD
Commonly Suggested Dental Ceramics!
C. Polycrystalline, no glass 1. Monolithic 2. Layered
The basic color on centrals is opacious,
A less translucent polycrystalline ceramic creates the desire color
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5-7 mm
IPS e.max Lithium-Disilicate
A high translucent clinical outcome is best achieved with a high silica ceramic
Etched Ceramic restorations
Reminiscent of minimally invasive procedures
An artistry Norm vs Exception
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Variables involved
u Different conditions
All Ceramic Restorations in 2014 Variables involved
u Truth and myth u Current status u Digital or analog or both u Minimal invasive procedure u Polychromatic restorations u Cementation / bonding u Handling
Digital Dentistry, CAD/CAM Technology
MPa Ultradent Jig
Bond or Cement
Universal simplified adhesives
Scientific Information Variables involved u Different luting and bonding Materials
All Ceramic Restorations in 2014
u Sufficient enamel. u Canine guided occlusion u Surface texture and characterization u Good harmonious color u No parafunction
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u Monolithic zirconia u Layered zirconia u Monolithic e.max u Layered e.max u Layered feldspathic
Layering technique and feldspathic is suggested when prerequisites are met
It is technically difficult to fabricate ���single anterior monolithic lithium disilicate or zirconia restorations
Patient desire
• Tooth color restorations • Less open bite
Ideal restorations
Layered feldspathic crowns
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Ideal treatment option
Functional occlusion and selection of ceramic
Ideal occlusion, sufficient enamel, no flexural loading, excellent color
Three of them are covered with a similar strength silica based porcelain
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Important
Under the ideal condition, three three of them provide similar
clinical outcomes
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Tight over-jet
u Extensive build up with composite!u Short ferrule extension !u Sub-gingival margin!u Light occlusal contacts!
Endodontically treated # 8, restored with DT Post���
Pre-op; Feldspathic Post-op; Zirconia
Restored with facially layered Zr crown All Ceramic Restorations
u Layered feldspatic
Excellent for anterior etched porcelain bonded to enamel veneers (non- discolored teeth)
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All Ceramic Restorations u Layered feldspatic u Lithium-disilicate (e.max )
A. Pressed
Excellent for anterior etched porcelain bonded to enamel veneers (discolored teeth, excessive flexural loading and insufficient tooth structure )
360-400 MPa
A layered CAD/ CAM e.max
All Ceramic Restorations u Layered feldspatic u Litium-disilicate
A. pressed B. CAD
Excellent for single posterior FPD
360-400 Ma 360-400 MPa
All Ceramic Restorations Lithium-disilicate ( e. max ) A. pressed B. CAD/CAM
Both pressed and CAD/CAM e. max may be layered to enhance the esthetic of the restoration
IPS e.max indication u Short span anterior bridge ?
u Short span posterior bridges
Not suggested
Ø Single unit crowns (anterior & posterior)
IPS e.max Indications
Veneering discolored teeth
Anterior teeth with extensive build ups
All Ceramic REstorations
u Layered feldspatic u Monolytic Litium-disilicate u Monolytic zirconia
Recommended for stress bearing posterior FPD (single or multiple unites)
900-1000 Mpa
All Ceramic REstorations u Layered feldspatic u Monolytic Litium-disilicate u Monolytic zirconia
Recommended for stress bearing posterior FPD (single or multiple)
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All Ceramic Restorations u Layered feldspatic u Monolytic Litium-disilicate u Layered Litium-disilicate u Monolytic zirconia u Facially veneered zirconia
Anterior FPD bridges
All Ceramic Restorations u Layered feldspatic u Monolytic Litium-disilicate u Layered Litium-disilicate u Monolytic zirconia u Fully veneered zirconia u Facially veneered zirconia
All Ceramic Restorations u Layered feldspatic u Monolytic Litium-disilicate u Layered Litium-disilicate u Monolytic zirconia u Fully veneered zirconia u Facially veneered zirconia Suggested for all anterior
and posterior zirconia Restorations located in
esthetic zone
There is no reason to veneer the lingual or occlusal surfaces of a strong and esthetically acceptable zirconia restorations
The veneer layer is a silica based ceramic and susceptible to fracture
upon excessive loading
There is no reason to veneer the lingual or occlusal surfaces of a strong and esthetically acceptable zirconia restorations
What we did
What we do
In light of current clinical observation, bonded or cemented monolytic Zr
crowns are suggested for all posterior teeth when full coverage is indicated