DIGITAL VS CONVENTIONAL FIXED

Clinical Steps???? (5)

Diagnosis

Dx casts/models/wax up

Tx planning

Pre prosth (stage I - caries exc. core etc)

Crown prep / temp

Conventional Lab Workflow???? (6)

Impression making

Cast pouring and sectioning dies

Wax pattern creation

Investing

Casting/prssing

Porcelain layering if needed

What is function of die spacer?

Sectioning?

Accommodates for cementation thickness

indiviudal dies

What is spruing

Attaching a sprue (a channel or pathway) to a wax pattern to allow molten metal to flow into the mold cavity during the casting process

What materials are used for Investing:

Gympsum bonded?

Phosphate bonded?

Silica bonded?

Gold alloys

Base metal alloys for FPDs

Base metal alloy partial denture

Casting is done with what material?

Pressing?

Metal

Ceramics (same thing as casting)

Digital Workflow???? (4)

Intraoral scan

Digital design

Milling/3D printing

Crystallization/Sintering

Crystallization/Sintering is done in a controlled ____ environment with a specific cycle for each _____

Can take between ____ to _____ (time)

Heat

Material

12 mins to 10 hours

What are the shared steps between digital and conventional???

Finishing and polishing

Staining/glazing if indicated

Porcelain layering (optional)

3D printing is a good option for what?

Provisionals

Trad Fab:

Technique?

Time?

Accuracy?

Pt comfort?

Aesthetics?

Cost?

Replicable?

Chairside Availibility?

Physical (PVS)

Longer (lab dependent)

Technique sensitive

Less

High

Lower upfront

Harder to

Not available

Digital Fab:

Technique?

Time?

Accuracy?

Pt comfort?

Aesthetics?

Cost?

Replicable?

Chairside Availibility?

intraoral scanner

Same day or shorter

Higher

More comfortable

Mod to high

Higher equipment cost

Easy

Possible if in office

Cast Metal (Gold):

Fab method?

Workflow type?

Wax pattern, casting (lost wax technique)

Conventional

PFM:

Fab method?

Workflow type?

Wax pattern + casting of metal sub structure & porcelain layering

Conventional

Lithium Disilicate (IPS e/max):

Fab method?

Workflow type?

Wax pattern and heat press or CAD/CAM Milling

Both

Lucite Reinforced Glass Ceramics (Empress):

Fab method?

Workflow type?

Wax pattern and heat press or CAD/CAM Milling

Both

Zirconia:

Fab method?

Workflow type?

CAD/CAM Milling, Optional porcelain layering

Digital

What material is very durable, excellent fit, biocompatible, and less aesthetic?

Cast Metal (gold)

What material combines strength of metal with better aesthetics, but has a risk of porcelain chipping?

PFM

What material has good strenght, good translucenty and aesthetics?

Lithium disilicate

What material has excellent translucency, lower strength than lithium disilicate and is a great option for veneers?

Lucite reinforced glass ceramics

What material has variable strength, translucency and low cost?

Zirconia

Preffered Technique for deep margins and sharp line angles?

Conventional

Preferred technqiue for speed/efficiency needs/patient comfort?

Digital

Preferred technique for highly aesthetic zones?

Either - slight edge for conventional

preferred technique for complex cases?

Conventional - sometimes hybrid

T or F: Digital workflows (scanning, designing, milling, or 3D printing) do fix inaccurate diagnoses, poor treatment planning, faulty preparations, wrong material selection, or weak clinical skills

F -> They do not