Lecture Midterm Indirect II Flashcards by Tedman McMahon

All imaging systems can do:

single crown, inlay, onlay, veneer

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Only imaging system that can do partial design:

TRIOS

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Only imaging system that can’t do partial FDP:

Cerec Blue Cam

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Only imaging system that can do interim partial FDP:

CEREC BlueCam Triangulation

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3 imaging systems that can do implant restoration:

Trios, Cerec Omincam, E4D Optical Coherent Tomography, LAVA Chairside Oral Scanner, Active Wavefront Sampling)

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2 imaging systems that can do PrepCheck:

CEREC BlueCam Triangulation, CEREC Omnicam Triangulation

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Only maging system that can do ortho appliances:

Active Wavefront Sampling, LAVA Chairside Oral Scanner

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Pixel-by-pixel imaging:

confocal

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Types of confocal imaging:

Spot, parallel

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2 imaging systems that require coating powder:

Lava Chairside Oral Scanner (AWS), CEREC BlueCam Triangulation

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Imaging systems w closed platforms:

CEREC Omniocam, CEREC BluCam didn’t say

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Physical models are possible with these imaging systems:

Lava Chairside Oral Scanner (AWS), E4D Optical Coherent Tomography, I-Tero and Trios (both Confocal)

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Only imaging system to use video capture:

Lava Chairside Oral Scanner (AWS)

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Need for CC resto:

lots of coronal damage, high need for res and ret, short crown, correction of axial, endo tx

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Resto material w superior esthetic:

ACC,excellent translucency similar to tooth

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TF? ACC is a more conservative prep?

T. (than what though?)

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Disadv of ACC’s:

Proper prep needed for mechanical success (isn’t this true for all?)

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Contraindications for ACC:

If you can’t get adequate support or even shoulder of 1mm all around

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Incisal reduction for anterior prep:

1.5mm

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Bur for finish line, ACC:

modified shoulder

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Width of finish line for ACC:

1mm

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occlusal reduction, Post ACC Prep:

1.5mm – 2.0mm (depends on whether monolithic or layers)

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Axial reduction, ACC post prep:

1.5mm

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Reduction at gingival margin, posterior ACC prep:

1mm

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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.

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.

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