C. David Hemp DDS Inc.
Cerec 3D is Unleashed 3/03!
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"Contempt for others is bred by Conceit!"
Original Quote by Doc Hemp
Original Quote by Doc Hemp
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Cerec 3 - 3D, the phenomenally accurate, CONSERVATIVE, computerized single visit porcelain (no impression) Veneer, Inlay/Onlay,
3/4 and full Crown tooth restoration system! .. A powdered (and now non powdered) image of the tooth from a cad/cam 3D camera accurate to 25 microns
is sent to a milling machine accurate to 25microns which is closer than we need as per fusion space. The dentistry of tomorrow is finally
here today! Championed by those progressive dentists (regardless of age) willing to learn new technologies and willing to re-invest their
time and very substantial sums of money into the latest dental equipment for their patients, (and themselves) ... Like Cerec, Digital Xrays,
Inta-Oral Cameras, New Sirona Digital Panos, Micro Air Abrasion, and lasers, etc.
We as dentists spend a huge part of our lives in our
offices, why not surround ourselves with best technologies possible as our practices grow? Look forward to going to work!
The purpose for me of Cerec is to save as much original tooth structure that we can. Remove all of any old filling material and replace that and the
fractured portion with very strong Industrial Ceramic that is made in 4 micron particle sizes without micro spaces just as our own enamel
rods are. These inlay/onlays are the most conservative if there is enough natural tooth left to do these. And the full crowns are so
strong and bond so well pins and buildups are no longer needed.
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Werner Mormann graduated as a dentist from the University of Heidelberg and acquired his first doctoral honors with a thesis on the
condensation of amalgam in 1969. He worked in private practice in the city of Mannheim and in the countryside in Schaan/Liechtenstein.
From 1970 on he continuously lectured operative dentistry at the University of Zurich Dental School but parallel to that specialized in
clinical periodontology completing a thesis on the gingival reaction to subgingival gold inlay margins. He used fluorescein angiography
to study gingival blood supply after periodontal flap and graft procedures, as presented in a postdoctoral thesis, and produced 37
articles in the field of periodontology and preventive dentistry.
Early in 1980, Mormann anticipated the attraction of restoring posterior teeth with tooth-colored material instead of using
amalgam or gold. He conducted studies and developed the clinical concept of bonded ceramic inlays, at the same time raising the issue
of the fast fabrication of the ceramic restorations. He planned the idea of in-office CAD/CAM fabrication of ceramic restorations specifically
to be used chair-side by the dentist to complete one or multiple ceramic restorations in a single appointment. The initial concept comprised
a small mobile CAD/CAM unit integrating a computer, keyboard, track-ball, foot-pedal and opto-electronic mouth-camera as input devices,
a monitor and a machining compartment as filed in a Swiss patent application together with the engineer Dr. Marco Brandestini, in
December 1980.
Together they solved the problems of fast 3D capturing of tooth preparations with a mouth-camera, the form-grinding of esthetic ceramic,
the manufacture of ceramic blocks and scan powder, and completed the construction of the CEREC 1 hardware and first operating software
during the years 1981 to 1985. To produce the first series of 25 CEREC 1 units they founded �Brains� Inc. with the Zurich based Proceq SA as
a financial partner. Cooperation with Siemens started in 1986 and continued with Sirona since 1997.
The original concept carried through CEREC 1 and 2 versions. In the year 2000 CEREC 3 divided the system into an acquisition/design and a
separate machining unit. Also, the "CEREC InLab", the machining unit equipped with a laser scanner or using an extra-oral scanner (inEOS)
can be operated in the dental laboratory with a personal computer. The new 3D software makes the handling illustrative and easy both in
office and in the laboratory.
Mormann is professor of operative dentistry, has published 100 articles and 10 books on chair-side CAD/CAM technology, related
materials and clinical experience, and received the (Medical Faculty, U. of Zurich) and the Engel (Academy of Continuing Education,
Karlsruhe, Germany) awards. He is founder and president of the Foundation for the Advancement of Computerized Dentistry Zurich,
Switzerland, has established the Division of Esthetic and Computer Restorations at the U. Zurich Dental School and is head of this division.
Werner Mormann was born in Goppingen and raised in Mannheim, Germany, and lives with his wife, Jeanette, daughter Viviane and son
Jan in Zurich, Switzerland. He loves skiing, hiking and wind-surfing.
Hi Doc
Thanks for putting a link to cerec.net on your site ;-) I was thinking of setting up cerec.net meetings in the future... your idea sounds good...
let's work on that
kind regards
Alessandro
4/15/06 ... Below is a photo of the very first 2D (Free) MOD Cerec I ever did (at my office) about 4 years ago. The first bicuspid. There has
been no stain on any of the margins. The 2D full Cerec crown on the 2nd bicuspid next to it I did a short time later when the patient
fractured off an old pin and buildup crown near the gum line. You can see on the xray below the photo how little tooth was left ...
Instead of a probable extraction and implant we decided to try a fused in full Cerec crown. It is still there 3 plus (now 12) years later 10/30/15.( ;> )
Some of the internal corners could have been rounded some more, but they have all fit very well! .. Sorry the photos are so poor,
Accucam then scan = very opaque looking due to the polarizing light in the Accucam ... But in the mouth these restorations are invisible
and just disappear into the tooth! Camelion Effect!
They are a blast to do! The software is very good and easy to use now with the 3D .... just take your time and enjoy it! ..
I did opt to minimize pronounced occlusal grooves in many cases to keep the porcelain as thick as possible, eliminate possible deep fracture
lines for strength and to preserve maximum tooth structure. But .... when you have thickness, these are very easy to develop great occlusions
with by analog milling with your diamonds (with the water on!) prevents micro fractures.
12/05 ... Staining the occlusal grooves of posterior teeth and glazing is really not necessary. Staining and glazing is usually to impress other
dentists (that they hope will attend their lectures, buy their videos or equipment).
These polish up wonderfully as recommended by Sirona without glazing. The surface is the exact hardness of the enamel .. We don't need a
harder glaze. The patient likes to see a nice new clean looking tooth anyway without stain ... And almost always would rather make the
others like that rather than visa/Verse! It is not a cosmetic area that can be seen like a front veneer or crown where staining is required
many times to match adjacent teeth. It's okay to not stain and it's okay to stain ... but those that stain won't get to heaven any quicker
than those that don't! ( : > ) )
Also .... I save the Cerec milling dust to polish with.
"If you put stain and glaze over poor work it is still poor work! ... If you put stain and glaze over good work it is still good work!"
Another Doc Hemp useless quote ... grin ..
We have had ZERO sensitivity on teeth that weren't left a little high in occlusion or already sensitive and even they are better after a couple
of weeks ... just like with our bondodontics ... Etch any exposed enamel, Clearfil S.E. Prime & Bond, Tetric Flow , Best long term results over 16
years in the mouth as per Dr. Mark Morin with over 20,000 Cerec's and less than 1% failure = fracture or chip!
This above is a Powdered prep of my 2nd Cerec ever 2D software machine (the box angles could be more rounded) taken off the screen of the computer. In the past,
I would have placed 4 TMS pins and Ti-Core Build up. And then the full crown. But, the Cerec just bonds into the prep as shown without a build
up (saving the patient the old Pin & B.U. fee) or more exterior weakening tooth reduction necessary for a full crown. This is what Cerec means
to me! Conservative Dentistry ... Fewer Crowns! If one is replacing a large failed amalgam and or one or two cusps fractured of a tooth or an
old porcelain crown on a tooth that had major tooth reduction done already, a Cerec crown or inlay/onlay is a great option in my opinion.
An xray showing Cerec bonded with S.E. Prime & Bond and seated with Tetric Flow
Below is a photo of a crown we did in June 03 .... the patient a bruxer had fractured off a long time bridge at the anterior
abutment (attachment) just above the gingival (gum) line ... ( wasn't wearing her night guard) ... I cut the bridge off at the mesial of the posterior
abutment crown ... prepped the fractured stump ... placed a preformed temporary over it .. adjusted the bite perfectly ... took a Cad/Cam photo
of it and then removed it and took the image of the stump ... and the Cerec milled out a perfect crown shown below here .. no adjustments at all
.... we are now in the process of placing 2 implant crowns where the pontics (old missing teeth on the bridge) were .. again .. sorry the photo is
so bad as per after scan off the Accucam .. in the mouth this is absolutely perfect!
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The custom brochure I made just for our waiting room and our existing patients. The before and after is only an example .. not one of our own
... You can see a few of our very first ones we did above.
These brochures have long since gone now, but the photo is cute .... And no ... I didn't position her middle finger on the doll ... We didn't even
notice it till after we made the brochures .... l ;>)