Intro to 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

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

WHAT CAN WE DO WITH CAD/CAM?
(6)

A

*Single tooth restorations on natural teeth
* Multi-unit restorations on natural teeth
* 3-unit bridges
* Implant restorations
* RPD Frameworks
* Complete Dentures

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5
Q

*Single tooth restorations on natural teeth
(4)

A

ØCrowns
ØInlays
ØOnlays
ØVeneers

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6
Q
  • Implant restorations
    (4)
A

ØCustom abutments
ØCement retained crowns
ØTitanium milled bars for full arch restorations
ØMulti-unit frameworks for implant bridges

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7
Q

Why use CAD/CAM?
(8)

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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8
Q

BENEFITS OF
DIGITAL
TECHNOLOGY

A

The multilevel quality
improvement afforded
through digital
technology is
recognized in workflow
and efficiency, record
keeping, data fidelity
and therapeutics.

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9
Q

LONGEVITY’OF’RESTORATIONS’
‘’Posterior’singleFtooth’restora4ons’fabricated’from’intraoral’scans’by’
using’CAD/CAM’technology’have’acceptable’results’for’
(4)

A

shade,’contour,’
marginal’adapta4on’and’occlusion’“

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10
Q

Survival rates:
—% after up to 17 years of clinical service
—% in 5.5 years vs —% for gold
—% in 5 years, —% in 10
—% in 9 years

A

88.7
88.8, 93.3
97, 90
98.4

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11
Q

Pre-requisite of Digital Imaging
(3)

A

*Digital Camera.
*Software.
*Production Unit.

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12
Q

CEREC® Bluecam System
(4)

A

*Inlays/ Onlays.
*Visible Blue Light (LEDs).
*Powder is required.
*Digital on-screen ArRculaRon.

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13
Q

CEREC Generation Comparison: CEREC Omnicam
Imaging Technique
3 D scan in color
Powder Usage
Area of Application
Advantages

A

Continuous data acquisition
Y
N
Single tooth, quadrant, and full
mouth

*Powder free.
*Easy handling
*Precise 3D image in natural
color.

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14
Q

CEREC Generation Comparison: CEREC Bluecam
Imaging Technique
3 D scan in color
Powder Usage
Area of Application
Advantages

A

Multiple shots joined together
N
Y
Single tooth, quadrant (full mouth
is possible)

*High precision.
*Rapid scan in powder coated
surfaces.
*Easy to use.

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15
Q

*Data Acquisition:
(2)

A

*Direct.
*Indirect.

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16
Q

*Accessibility to STL Files:
(2)

A

*Open.
*Close.

17
Q

*Production of final restoration:
(3)

A

*Chair-side Production.
*Laboratory Production.
*Centralized Production Centers.

18
Q

*DIRECT:

A

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

19
Q

*INDIRECT:

A

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

20
Q

*OPENFILES:

A

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

21
Q

*CLOSEFILES:

A

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

22
Q

CAD / CAM Production Concepts In Dentistry
(3)

A

Chair-side Production
Laboratory Production
Centralized Production

23
Q

CONVENTIONAL:
Initial Cost:

Additional Cost

A
  • PVS + Registration Material ~
    $17.
  • Trays, Dispensers, and Stone/
    Shipping.
24
Q

DIGITAL:
Ini$al Cost:

Addi$onal Cost:

A

*Scanner $20,000 -$30,000.
*Milling unit $110,000 -
$120,000.

  • Electronic Lab
    PrescripCons, Blocks, Burs,
    and Maintenance.
25
Conventional Vs Digital *Time (2)
*Go Digital and Save Time!! *Time is $$.
26
Conventional Vs Digital Time CONVENTIONAL: (12)
*Tray Selection/ Custom Tray. *Mixing Time. *Setting Time. *Remake. *Opposing Arch. *Inter-occlusal records. *Disinfection/ Clean-up. *Pour the impressions. *Mont the casts. *Ditch the dies. *Shipping. *Restoration.
27
Conventional Vs Digital Time DIGITAL: (9)
*Learning Curve. *Lab Prescription. *Scan (Prep, Opposing and Buccal). *Evaluate the scan. *Rescan. *Disinfection/ Clean-up. *Send (Electronically). *Cast (Printing/ Milling). *Restoration.
28
Conventional Vs Digital Tissue Displacement (3)
*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
29
Conventional Vs Digital Time CONVENTIONAL *~ min (Teeth) *~ min (Implants)
41 43.12
30
Conventional Vs Digital Time DIGITAL *~ min (Teeth) *~ min (Implants)
13 30.63
31
Digital Versus Conventional Impressions in Fixed Prosthodontics: A Systematic Review Ahlholm P, Sipilä K, Valli8u P, Jakonen M, Ko=ranta U J Prosthodont 2016 Aug 2 PMID: 27483210
*SystemaCc Review. *Accuracy of ConvenConal Vs Digital impressions. *In-vitro Studies. *19 papers included. *Same level of accuracy for Crowns and FPDs. *Digital impressions showed a clinically accepted results, shortened the treatment Cme. *ConvenConal impressions are sCll recommended for full-arch restoraCons.
32
Conventional Vs Digital Internal & Marginal Fit Tsirogiannis P, Reissmann D, Heydecke G J Prosthet Dent 2016.
*Systematic Review. *Marginal fit of single ceramic restoration ( CAD/CAM Vs CI). *In-vitro & In-vivo. *63 papers were included. *In-vitro: *Conventional: 58.9 μm (95% CI: 41.1-76.7 μm). *Digital: 63.3 μm (95% CI: 50.5-76.0 μm). *In-vivo: *Conventional: 79.2 μm (95% CI: 59.6-98.9 μm). *Digital: 56.1 μm (95% CI: 46.3-65.8 μm). No significant difference was observed regarding the marginal gap of single-unit ceramic restorations obtained from digital or conventional impression techniques.
33
Digital versus conven@onal impressions for fixed prosthodon@cs: A systema@c review and meta-analysis Chochlidakis K, Papaspyridakos P, Geminiani A, Chen C, Feng I, Ercoli C J Prosthet Dent 2016;116:184-190
*Systematic Review. *Marginal fit of fixed prosthesis.*Conventional Vs Digital.*Marginal and internal gaps with conventional technique were greater than the digital technique, (P-value <0.05).*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.
34
Conclusion (2)
*Digital impression can produce clinical acceptable impressions. *For Full-arch impressions, Conventional Impression techniques shows superior accuracy.
35
Some advantages of the Optical/Digital Technique: (4)
*More comfortable to the patient. *Better Marginal fit (both clinically accepted). *Improve Dentist/Lab communication. *Cut down the turn around time.