2. What is CAD/CAM?
⬡ CAD/CAM stands for
Computer-Aided Design –
Computer-Aided Milling.
⬡ It makes use of scanning
technology, 3D modeling
and computer design
applications to create a
virtual plan of the proposed
crowns, veneers, inlays,
onlays and even bridges.
2
3. 3
1971
Dr. Francois
Duret
Father of dental
CAD/CAM
technology
(SOPHA System)
1985
Dr. Werner H.
Mörmann
CEREC System
1980s
Dr. Matts
Andersson
Procera
System
Brief History on CAD/CAM in dentistry:
4. 4
1994
Siemens CEREC team
CEREC 2 system
2000
Sirona Dental Systems
GmbH, Bensheim,
Germany
CEREC 3 system
Brief History on CAD/CAM in dentistry:
8. Tooth preparation
Is the physical alteration of
the remaing tooth structure,
in which the alterations made
can accommodate the
restoration material without
worry of mechanical or
biologic failure. 8
10. Guidelines in tooth prep:
⬡ Prior to applying tooth prep,
one must decide the design of
the preparation. Always
remember the conservation of
enamel is the most vital
component.
⬡ Occlusal reduction is the first
step in preparing the tooth, in
10
11. Guidelines in tooth prep:
⬡ Reduction of the functional cusps is also
prioritized when prepping the tooth. This
is to avoid thin spots in the porcelain and
fracture of the restoration when under
stress.
⬡ Overall, one must study the process of
milling using a machine in order to
carefully prepare your porcelain
11
12. Guidelines in tooth prep:
⬡ According to Dr. Herbert T. Shillingburg, these are the 5
principles in tooth preparation.
12
Preservation
of tooth
structure
Retention
and
Resistance
Structural
durability
Marginal
Integrity
Preservation
of the
Periodontium
15. Common materials
in CAD/CAM
Nano-Ceramics
⬡ combines the resilience of resins with
the strength of ceramic.
⬡ Inlays and onlays are the best
indications for this material, because thin
margins are less prone to chipping and
there is less flexion and debonding of
the restoration.
⬡ advantages are fast fabrication, clean
milling, and easy polishing.
15
19. Take note while
scanning:
⬡ Scanning is the final impression in
the procedure, so all old rules
apply: use of packing cord,
hemostatic agents, or use of laser
surgery in order to make sure the
margins are clear and can be
visualized.
19
20. Take note while scanning:
⬡ Make sure there is proper
isolation of the tooth prep.
⬡ Check for undercuts,
occlusal clearance, and
sharp edges.
20
37. ⬡ For adding shine and realistic
esthetics to the milled crown,
glazing the finished product
with glaze spray and initiating
crystallization process by
baking in high heat.
⬡ When using spray: coat the
product until it appears frosty.
⬡ If glaze spray is not optional,
you can shine the restorative
crown with a rubber polisher
after it is baked 37
44. References:
⬡ Jain, R., Takkar, R., Jain, G., & Deora, N. (1970, January 01). CAD-CAM the
future of digital dentistry: A review. Retrieved October 14, 2020, from
https://www.semanticscholar.org/paper/CAD-CAM-the-future-of-digital-dentistry:-a-
review-Jain-Takkar/620f5cc557f48b274733767a3d96a4dfc7449016
⬡ AEGIS Communications, B. (2015, November 01). CAD/CAM Materials in
Dentistry. Retrieved October 14, 2020, from
https://www.aegisdentalnetwork.com/id/2015/11/cad-cam-materials-in-dentistry
⬡ Jpda. (2018, May 07). A Review On Cad Cam In Dentistry. Retrieved October 14,
2020, from http://www.jpda.com.pk/a-review-on-cad-cam-in-dentistry/
⬡ Geraldine M.W., & Mitchell T.Z. (2017). The Dental Reference Manual: A Daily
Guide for Students and Practitioners. Springer International Publishing
Switzerland. Indirect Restorations with CAD/CAM Technology pp162-175.
⬡ Youtube video: The Basics of CAD/CAM Dentistry. (March 10, 2017). Channel
Name: asdanet. Link: shorturl.at/nrxUZ
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