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fixed pros. > digital dentistry > Flashcards

digital dentistry Flashcards

1
Q

What is Digital Dentistry?

A

The use of dental technology or device
that incorporates digital or computer-
controlled components in contrast to
that of mechanical or electrical alone

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2
Q

CAD

A

Computer Aided Design
The use of computer programs to create two- or three-dimensional (2D or 3D) graphical representations of physical objects.

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3
Q

CAM :

A

CAM : Computer Aided Manufacturing /Milling
The use of computer software to control
machine tools and related machinery in
the manufacturing of work pieces.

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4
Q

why use cad/cam
* materials?
* cost?
* labor?
*speed of production process?
* dimensions?
* wastage?
* energy consumption?
* quality control?

A

*Application of new materials
*Better cost effectiveness (some have estimated the savings in lab bills to range from 60%-70%)
*Reduction in labor
*Faster production process
*Precise dimensions
*Minimizing wastage of material
*Reducing energy consumption
* Better quality control

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5
Q

longevity of cad/cam restorations

A

very good long term success

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6
Q

point cloud triangulation

A

used by cad systems, scans objects and creates points in space that are then connected via triangles to form object

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7
Q

STL files

A

standard triangulation angle files
still use triangluation to form 3d object, more points used for this will result in a more accurate image

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8
Q

req for digital imaging

A

camera
software
production unit

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9
Q

cerec bluecam uses what light source

A

LED blue light

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10
Q

what is req on teeth for cerec bluecam

A

aluminum powder to reflect blue light

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11
Q

is there articulation wth cerec blue cam

A

yes onscreen articulation

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12
Q

omnicam vs blue cam imaging technique

A

omni: continous acquisition
blue: multiple shts joined together

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13
Q

omni vs blue, 3D scan in color?

A

omni: yes
blue: no

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14
Q

omni vs blue, powder?

A

omni: no
blue: yes

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15
Q

omni vs blue, areas of use?

A

omni: single tooth, quad, full mouth
blue: single, quadrant, full is possible

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16
Q

omnicam advantages

A

no powder
easy use
precise 3d colored image

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17
Q

bluecam advantages

A

high precision
rapid scan of pwodered surfaces
easy

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18
Q

prime vs omni scan procedure

A

prime: dynamic depth
omni: triangulation

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19
Q

prime vs omni, powder?

A

prime: none
omni: none

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20
Q

prime vs omni, scan metal surfaces?

A

prime: yes
omni: yes, may need powder tho

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21
Q

prime vs omni, color scan?

A

both can

22
Q

prime vs omni, photorealistic scans?

A

both

23
Q

prime vs omni full mouth scan time?

A

prime: 2-3 min
omni: 8-12 min

24
Q

prime vs omni, autoclavable?

A

prime: yes
omni: no

25
Q

how to classify a digital restoration

A

classified with data acquisition, accessibility to STL files and production of final restoration

26
Q

direct data acquisition

A

The data are directlyobtained from the patient’smouth via intra oral scanner.

27
Q

indirect data acquisition

A

The data are indirectlyobtained in the lab either from an impression or a stone
cast.

28
Q

open STL files

A

Are not dependent on the manufacturer, can be used with any
software to fabricate the final restoration.

29
Q

closed STL files

A

The data are controlled and manipulated by the owner
(manufacturer).

30
Q

cad/cam production methods

A

Chair-side Production
Laboratory Production
Centralized Production

31
Q

itero, 3m lava, sirona: optical techs

A

itero: parallel confocal/ telecentric
3m lava: wavefront sampling
sirona: LED/ laser

32
Q

which digital impression system req powder

A

3m lava

33
Q

which digital impression system has a closed interface

A

3m lava

34
Q

which digital impression system is only up to 4 UB and single restorations

A

3m lava

35
Q

chair side production

A
36
Q

lab production

A
37
Q

centralized production

A
38
Q

CEREC AC
Working principle
Light Source
Image Type
Necessity for Coating
In-office milling

A

Active triangulation
Visible blue light
Multiple images
Yes
Yes

39
Q

iTero
Working principle
Light Source
Image Type
Necessity for Coating
In-office milling

A

Parallel confocal microscopy
Red Laser
Multiple images
No
No

40
Q

E4D
Working principle
Light Source
Image Type
Necessity for Coating
In-office milling

A

Confocal microscopy
Laser
Multiple images
Optional
Yes

41
Q

LAVA COS
Working principle
Light Source
Image Type
Necessity for Coating
In-office milling

A

Active wavelength
Pulsative visible Blue light
Video
Yes
No

42
Q

TRIOS
Working principle
Light Source
Image Type
Necessity for Coating
In-office milling

A

Confocal microscopy
Not Disclosed
Multiple images
No
No

43
Q

conventional vs digital inital costs

A

con: PVS + Registration Material ~ $17.
digital: Scanner $20,000 -$30,000 and Milling unit $110,000 -$120,000.

44
Q

conventional vs digital additional costs

A

con: Trays, Dispensers, and Stone/ Shipping.
digital: Electronic Lab PrescripCons, Blocks, Burs, and Maintenance.

45
Q

conventional vs digital time

A

*Go Digital and Save
Time!!
*Time is $$.

46
Q

Conventional Vs DigitalTissue Displacement

A

*Tissue Displacement is a MUST for both Techniques.
*Dry Field is a MUST for both Techniques.
*0.5 mm of tooth structure apical to the
finish line.

47
Q

lit review of digital restorations results and time

A

*Digital impressions showed a clinically accepted results, shortened the treatment Cme.

48
Q

what method should be used with full arch restorations

A

conventional

49
Q

lit review finding for single unit ceramics digital vs conventional

A

No significant difference was observed regarding the marginal gap of
single-unit ceramic restorations obtained from digital or conventional
impression techniques.

50
Q

Digital versus conventonal impressions for fixed
prosthodontics: A systematic review and meta-analysis

A

Conclusion: Although conclusions were based mainly on in vitro studies, the digital impression technique provided better marginal and internal fit of fixed restorations than conventional techniques did.

51
Q

Some advantages of the Optical/Digital Technique:
*comfort
* Marginal fit
* communication.
*turn around time.

A

*More comfortable to the patient.
*Better Marginal fit (both clinically accepted).
*Improve Dentist/Lab communication.
*Cut down the turn around time.

52
Q

review tables in slides for completion

A

fixed pros. (11 decks)

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