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Digital Dentistry 2 > L3 CAD-CAM > Flashcards

L3 CAD-CAM Flashcards

1
Q

CAD

A

use of software to aid in the creation, modificiaton, analysis, or optimization of a design

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2
Q

universal software programs for CAD

A

not only for dental use (do not follow dental rules)

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3
Q

main advantage of universal CAD software

A

accepts complex cases and designs

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4
Q

main disadvantage of universal CAD software

A

takes logner and extra training to design a case

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5
Q

dental CAD software

A

only for dental use (follows dental rules)

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6
Q

main advantage of dental CAD software

A

faster / easier to design simple cases

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7
Q

main disadvantage of dental CAD software

A

do not accept complex cases and designs. could be limited depending on the software

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8
Q

closed system

A

-must work within a system
-accepts scans from one / limited type of scanner
-sends design to one / limited type of milling unit

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9
Q

main advantage of closed system

A

straightforward workflow

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10
Q

main disadvantage of closed system

A

limited

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11
Q

open system

A

-accepts scans from all other open systme scanners
-sends designs to all other open-system milling units or 3D printers

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12
Q

main advantage of open system

A

versatile

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13
Q

main disadvantage of open systm

A

complex workflow

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14
Q

CAM

A

the use of software and computer controlled machinery to automate a manufacturing process

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15
Q

most you can mill from chairside block

A

3 unit bridge

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16
Q

how many blocks can you mill chairside at a time?

A

one

17
Q

chairside milling materials

A

PMMA
glass ceramics
zirconia

18
Q

why use the smallest size that can mill your restoration?

A

lower cost
faster
less waste

19
Q

wet milling

A

process uses a liquid coolant to remove excess material from the cutting tool and millingmaterial

20
Q

wet milling materials

A

lithium disilicate
feldspathic porcelain
chrome cobalt

21
Q

dry milling

A

machine uses pressurized air or a vacuum to eliminate excess material

22
Q

dry milling materials

A

wax
acryllic

23
Q

materials that can be milled wet and dry

A

zirconia
titanium

24
Q

is it recommended to have a wet and dry milling machine in one?

A

no

25
Q

3-axis milling

A

x-axis
y-axis
z-axis

26
Q

4-axis milling

A

x-axis
y-axis
z-axis
a-axis (rotary movement around x-axis)

27
Q

when is 4-axis milling helpful?

A

when holes and cut outs need to be mad ein the side of a piece or around a cyllinder

28
Q

5-axis

A

x-axis
y-axis
z-axis
a-axis
b-axis (rotary movement around y-axis)

29
Q

is 5-axis milling accurate?

A

no

30
Q

main advantages of milling

A
  1. best accuracy
  2. variety of materials
  3. no polymerization shrinkage
  4. minimal post processing
  5. fastest
31
Q

stereolithography (SLA)

A

the light source in laser SLA printers is a tiny pin dot of light. this pin dot reflects off a rotary mirror and into the resin to cure resin dot by dot

32
Q

digital light processing

A

similar to SLA with one difference - where SLA machines use a laser that traces a layer, a DLP machine uses projected light source to cure the entire layer at once

layer by layer

33
Q

material jetting (MJP, polyjet)

A

similar to paper printer, but 3D. it jets resin matierals from tiny nozzles onto a build surface in rapid passes and instantly solidifies it with UV energy

34
Q

materials for 3D printing

A

resins mainly

metal printing is new and expensive

35
Q

main advantages of 3D printing

A

cheap
minimal waste
complex geometries
getting faster, but not as fast as milling

36
Q

main disadvantages of 3D printing

A

messy
weak materials
limited materials
low evidence

37
Q

when to use 3D printed materials

A

try in
provisionals
guides

Digital Dentistry 2 (5 decks)

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