Lecture Midterm Indirect II Flashcards
All imaging systems can do:
single crown, inlay, onlay, veneer
Only imaging system that can do partial design:
TRIOS
Only imaging system that can’t do partial FDP:
Cerec Blue Cam
Only imaging system that can do interim partial FDP:
CEREC BlueCam Triangulation
3 imaging systems that can do implant restoration:
Trios, Cerec Omincam, E4D Optical Coherent Tomography, LAVA Chairside Oral Scanner, Active Wavefront Sampling)
2 imaging systems that can do PrepCheck:
CEREC BlueCam Triangulation, CEREC Omnicam Triangulation
Only maging system that can do ortho appliances:
Active Wavefront Sampling, LAVA Chairside Oral Scanner
Pixel-by-pixel imaging:
confocal
Types of confocal imaging:
Spot, parallel
2 imaging systems that require coating powder:
Lava Chairside Oral Scanner (AWS), CEREC BlueCam Triangulation
Imaging systems w closed platforms:
CEREC Omniocam, CEREC BluCam didn’t say
Physical models are possible with these imaging systems:
Lava Chairside Oral Scanner (AWS), E4D Optical Coherent Tomography, I-Tero and Trios (both Confocal)
Only imaging system to use video capture:
Lava Chairside Oral Scanner (AWS)
Need for CC resto:
lots of coronal damage, high need for res and ret, short crown, correction of axial, endo tx
Resto material w superior esthetic:
ACC,excellent translucency similar to tooth
TF? ACC is a more conservative prep?
T. (than what though?)
Disadv of ACC’s:
Proper prep needed for mechanical success (isn’t this true for all?)
Contraindications for ACC:
If you can’t get adequate support or even shoulder of 1mm all around
Incisal reduction for anterior prep:
1.5mm
Bur for finish line, ACC:
modified shoulder
Width of finish line for ACC:
1mm
occlusal reduction, Post ACC Prep:
1.5mm – 2.0mm (depends on whether monolithic or layers)
Axial reduction, ACC post prep:
1.5mm
Reduction at gingival margin, posterior ACC prep:
1mm
Only ceramic wo 2 phases:
polycrystalline
2 phases of all ceramics except for polycrystalline:
Glass Phase, Crystalline phase
Ceramics are in this phase most of the time:
glass phase
glass phase of ceramics:
silica (SiO2)
Crystalline phase of ceramics:
Leucite, LiDi, Alumina, Magnesia, Zirconia
Least to most crystalline (most to least flexural strength):
feldspathic –> Pressed leucite –> LiDi –> Alumina –> Zirconia
Does translucency inc or dec as the amount of crystalline inc?
dec
Fabrication techniques of ceramics:
conventional powder/slurry/ castable, pressable, slip-casting, machinale
conventional powder/slurry is used for:
porcelain jacket crown, layers on stronger, alumina based, core and framework
These have props close to glass:
Castable Ceramics
ONLY porcelain crown made by a centrifugal casting technique:
Castable ceraminc
How is glass recovered from castable ceramics?
sandblasting
Define ceramming:
heat treatment process by which the glass is strengthened, develops microscopic crystals of mica, improve strength of glass, red transparency of glass, making it more opague and glass-like
Ceramics that can be used for veneer, anterior crown, inlays and onlays:
Conventional Powder/Slurry Ceramics and Castable Ceramlics, Pressable Ceramics (Leucite & LiDi)
Material to use for 3-unit anterior FDP:
LiDi
What type of material is IPS E. max?
LIDi
Can LiDi be used for 3-unit ant FDP’s?
yes
Spinnel is only rec for:
Ant corwns
Limitation of In-Ceram Zirconium:
Ant not ideal
Preferred in-ceram material for ant resto:
Spinnel
IN-Ceram is what type of casting?
slip casting
In-Ceram Allumina is used for:
any crown, anteriors FDP
When to use In-Ceram Spinnel:
ONLY anterior crown!
When to use In-Ceram Zirconia:
any FDP, posteriro crowns, anterior crowns sometimes
Slip casting materials that can be used for 3-unit anterior FDP;s:
LiDi, Alll-Ceram Zirconium, All-ceram Alumina
Only slip casting material that can be used for 3-unit posterior FDP:
In-Ceram Zirconia,
Why to add ceramic in large bulk when casting slip durign slip casting?
it shrinks
Aplly this after sintering slip ceramic:
class glass, sinter again
Machinable ceramics:
Feldspathic, Leuicite, LiDi, In_ceram Alumina/ zirconia, procera alumina, Ytrium-stabilized airconium oxide
Lower complication rate, ACC or conventional crown?
ACC
Most common complications of ACC:
fracture, loss of retention (LOR)_, need for endo
5y survival In-Ceram Alumina/Spinnel crowns:
92-100%, similar to MCC
TF? In-Ceram Alumina/Spinnel crown have a similar survival rate to MCC.
T
TF? For single-rooted anterior teeth, clinicians may select from any all-ceramic system for laminate veneers, intracoronal restorations such as inlays and onlays, and for full-coverage restorations.
T.
Check crown fit in this order:
Proximal contacts
Margin
Stability
Occlusion
Alumina Particles abrasion and silica coated alumina particle aabrasion are both what type of abrasion?
air
Air abrasion is aka:
micro etch
Predominantly glass ceramics are derived from:
feldspar material, silicon, and aluminum oxides
When to use glass ceramics:
vneer over metal or ceramic coping/ framework, jacket crown, inlays, onlays
TF? Predominantly glass ceramics are not very esthetic.
F. very esthetic
Adv of predominantly glass ceramics:
esthetic, biocompatible, resistant to abrasive and compressive forces
Use this when delivering Feldspathic crown:
adhesive cement
Why must predominantly gals ceramics be adhesively-cemented?
to resist fracutre
Adhesive cementation of predominantly galss ceramics to dentin or enamel req:
adhesive system + resin cement
IPS Empress, low or high filled?
low filled
Use this to deliver low-filled particle glass ceramics:
adhesive cement, to improve strength
IPS e.max Press is what type of ceramic:
Intermediate particle-filled ceramic
When to use intermediate particle-filled ceramic:
veneers, single crown, coping (no inlays or onlays, hunh?)_
Disadv to low-paricle-fillled glass ceramic:
low strength
When to use low-particle fille dceramics:
low stress areas: veneers, inlays, onlys,
Use this to deliver high-filled particle glass ceramics:
cement adhesively or non-adhesively for full coverage crown
When to cement intermediate particle-filled ceramic rtestos:
partial coverage (veneer, inlay, onlay), short, clinically nonretentive preparations
TypesTypes of polycrystaline ceramics:
aluminum or zirconium oxide:
Types of aluminum osxides:
Procera Alumina, Nobel Biocare, Zurich
