4. 4
“Change is the law of life. And those who
look only to the past or present are
certain to miss the future - John F.
Kennedy”
The Stone Age and Bronze Age were named for the materials
that dominated these major historical periods. Consequently,
the modern era, which has encountered an ever- increasing
assortment of ceramic materials for industrial or biomedical use
could be characterized as the “ceramic age”.
14. ZIRCONIUM
Arabic word ZARGON ( golden in colour)
zar gun
( gold ) + ( colour)
Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering
the nature of an upcoming bioceramic. Eur J Esthet Dent. 2009 ;4(2):130-51.
15. ZIRCONIUM
Exists in two forms
THE
AMORPHOUS
FORM
THE
CRYSTALLINE
FORM
White & Ductile Metal
Blue-Black Powder
Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering the nature of
an upcoming bioceramic. Eur J Esthet Dent. 2009 ;4(2):130-51.
16. Zirconia
• It is Zirconium dioxide (ZrO2)
• Poly-crystalline ceramic with high density
• Zirconia is an industrial
ceramic, used as a
BIOCERAMIC for over
20 years
Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering the nature
of an upcoming bioceramic. Eur J Esthet Dent. 2009 ;4(2):130-51.
17. Cubic
( >2370 °C )
MonoCLINIC
Pure zirconia at room temperature
stable up to 1170° C
Crystallographic phases
of ZIRCONIA
Tetragonal
(1170-2370°C )
20. Phillips’ science of dental material , eleventh edition
• Twice as of Alumina Oxide Ceramics
• 5 times greater than standard Glass Ceramics.
Flexural Strength
800 to 1500 Mpa
21. Fracture Toughness - 8 to 10 Mpa
• Twice as high as Alumina Oxide Ceramics
Phillips’ science of dental material , eleventh edition
23. The mechanical properties of zirconia
(zirconium dioxide) are the highest ever reported
for any dental ceramic, which naturally has
generated considerable interest.
Phillips’ science of dental material , eleventh edition
Hence, it is considered a
most promising dental
material.
26. Translucency of Zirconia was less sensitive
to thickness compared to that of the
glass ceramics.
J Prosthet Dent. 2013 Jul;110(1):14-20.
27. In terms of translucency, the studied
zirconia systems could satisfactorily
replace the human dentine within a
dental restoration.
J Dent. 2012 Dec;40 Suppl 2:e34-40
29. Zirconia
Composites
Inlay
onlay
Full & Partial
Coverage
Crowns
Extra Coronal
Attachments
Implant
Abutments
Veneers
Post &
Cores
Orthodontic
Brackets
Implants
Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering the nature of
an upcoming bioceramic. Eur J Esthet Dent. 2009 ;4(2):130-51.
30.
31.
32. Implant abutments
Modgi C, Aras M.Zirconia Abutments In Implant Dentistry.Int Journal Of Oral Implantlogy And
Clinical Research;2012;3(1):39-42
33. Root analogue zirconia implants
K. M. Regish, Deeksha Sharma, and D. R. Prithviraj (2013) An Overview of Immediate Root
Analogue Zirconia Implants. Journal of Oral Implantology: April 2013, Vol. 39, No. 2, pp. 225-233.
35. Grauer D, Wiechmann D, Heymann G, swift E. Computer aided design / Computer aided manufacturing technology in
customized orthodontic appliances. Journal of esthetic and restorative dentistry 2012;24 (1):3-9
DEPARTMENT OF ORTHODONTICS
Enhanced strength
Superior resistance to
deformation and wear
Reduced plaque adhesion
Improved esthetics
36. Zirconia crowns/ fixed partial dentures
DEPARTMENT OF PROSTHODONTICS
High flexural strength and fracture resistance
Y-TZP is the most recent framework material for the fabrication of all-ceramic FPDs
either in anterior or posterior sites.
The load bearing capacity is significantly higher than other conventional all-ceramic
systems.
37. Zirconia as a filler material
in denture base resins
Ceria-stabilized “znano crystals”.
High strength, toughness, and thermal stability
Offers excellent biocompatibility
More esthetic.
Radio-opaque
Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering the nature of an
upcoming bioceramic. Eur J Esthet Dent. 2009 ;4(2):130-51.
38. VENEERS
DEPARTMENT OF CONSERVATIVE
DENTISTRY AND ENDODONTICS
MERITS
• Both Enhance esthetics and strength
• Minimally invasive restoration
• Good chemical and dimensional stability
• High mechanical strength and toughness
• Ability to alter the color of the
dark tooth.
Therefore, it is assumed that, due to the
inherent opacity of the zirconia core.
The clinical application of zirconia bilayer
veneers may offer High-strength veneer
restoration with better masking ability for a
given discoloration.
40. Zirconia post and core
Marghalani TY,Hamed MT,Awad MA, Naguib GH, Elragi AF. Three-dimensional finite element analysis of
custom-made ceramic dowel made using CAD/CAM technology.J Prosthodont.2012 Aug;21(6):440-50
41. Zirconia-filled Composite Resins
Adhesive Bonding of Zirconia with Single-liquid AcidicPrimers and a Tri-n-butylborane Initiated Acrylic Resin
Daisuke Nakayamaa/Hiroyasu Koizumib/Futoshi Komineb/Markus B. Blatzc/ Naomi Tanoued/Hideo Matsumurae
Nano-sized particles (“Znano”)
• Superior wear resistance
• Enamel-like hardness
• Improved marginal integrity
• Provide sufficient transparency
• Good workability
• Radiopacity
43. The advent of zirconia ceramics, in
combination with computer technology, has
led both dental science and industry to
experience their own “dream.”
“zirconia dream” could be defined as
highly biocompatible zirconia ceramic
material
44. “The Technology You Use
Impresses No One .. The
Experience You Create
With It Is Everything”
Sean Gerety
45. conclusion
The technological evolution of dental ceramics
has been remarkable over the past four
decades- from feldspathic porcelains to
zirconia-based all-ceramics.
The journey is not over yet….
46. The Technology Is Achieving New Milestone
Everyday . In Today's Fast Paced World,
CAD/CAM Systems Have Become An
Essential Part Of Dentistry . Technology is
Changing Rapidly, so its important to gear up
and move along with it…..
47. Wish you all dazzling smiles!!!
Crafted by a PROSTHODONTIST!
Editor's Notes
All dese terms cm in our mind whn patient demands esthetics beyond imagination
Yes….. i m taking about a wonder material - zirconia
Nothing succed like success same goes for ceramics and its evolution in dentistry which started from
A Tiny drop of water which was conventional ceramics
From here the journey had begun…..
Which is still going on with
So here we are……. standing at the cross road where our quest of knowledge is un ending that had led to evolution of wonder material
Starting wid the basics
In periodic table atomic no of zirconium is 40
It is derived from an arabic word zargon …which when splitted into 2 words zar is gold and gun is colour.
also knows as zirconioum dioxide
Taking about diff phases of Z , it exist in 3 phases. However the most desirable property is in tetragonal phase. T phase allows ceramics with improved mechanical property to be obtained.So it is desirable to maintain its property for which we have to add diff stabilizers like---
Now the que which knocks my brain is…. Why zirconia is preferred may be the answer lies… because of
Other desirable properties like
We have discussed about various properties of zirconia like strenght , fracture toughness‘ biocompatibility
Bt in dis modern era whn everybody is concern about esthetics
The question arises…. Can zirconia be used in esthetic zone….
Yes….
Studies have shown dat…
Nw lets have a look at dental applicaion of zirconia….
We have an endless list of application of zirconia….
From revolution to evolution
In 1980 we have titanium implants which are revolunised to complete zirconia implants.
Coming to the applicaion of zirconia in oral surgery and periodontics
Coming on to the field of orthodontics…..
Because of the high flexural strenght and fracture resistance……. zirconia is used as a framework material for the fabrication of all ceramics fixed partial dentures either in anterior and posterior sites.
Radio-opacity
Zirconia ceramic post systems have been introduced to satisfy this trend toward a heightened awareness of esthetics.
Can be prefabricated or custom made….
Z nano particle are also use as a filler particle in composites resin because of superior…
