CEREC 3D The Revolution Begins! Industrial Ceramic CAD/CAM Technology
Another Non Commercial and Unofficial Web Site by C. David Hemp DDS Inc.
Cerec 3D is Unleashed 3/03!
"Cerec 3D Is Here To Stay!"
"Contempt for others is bred by Conceit!" Original Quote by Doc Hemp
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 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 reinvest 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, Panelypse
Xray Machines, 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 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 name of
the game! .... Many are losing sight of this and doing far to many full crowns
with this technology ... Some because the patients insurance might cover better
with full coverage, etc. One can never allow an insurance company to do our
diagnosis and dictate the standard of a patients care! We want only patients
that care as much about their own teeth as we do!
7-6-09 Update ... Along with Cerec.net, etc. now also join the new "Retro Cerec instant &
Easy Email
Goup" Dentnet ... Avanced Dental Net.
It has members from when Cerec started ... get the old feeling back and for newbies
.. get
the help you need quickly from those that have seen and done it all!
12-20-08 Update .. printing a few more Christmas card photos for Becky ...
and reflecting
on the wonderful opportunities for those going into dentistry today ..
I am more excited about dentistry now than I was in 1968 when I graduated
from LLU ... The wonderful electric handpieces, Cad/Cam, digital radiography,
intra-oral photos, implants, etc.
Our first one hour appointment available in our office is the end of Feb ..
Really loving what we do and taking the time to do it the best way we
can really pays off in the long run in every way possible .. If you are
a kid not quite sure what you want to do and are contemplating dentistry
contemplate no longer ... Get To It!! I am almost 66 yrs old and still
have a good 20 yrs left if I can stay fit .. and beat the the Big C.
And Yes ..the Cerec is still doing it's thing ...did a really tough full
crown on #2 Thursday .. came out so beautiful it gave me goose bumps!
Short Cut to Our New Cerec Emails Received and Cerec
Instructional Link Site
Many dentists and patients have their first exposure to CAD/CAM from our wild and
wacky general dentistry site to this page or from the top of numerous search engines
and follow our links first. This new page is devoid of all my personal rhetoric
MEET THE CREATOR OF CEREC CAD/CAM
Prof. Dr. Werner M�rmann
(As Shown and printed on Sirona's Web Site)
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.
M�rmann 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.
3/11/06 ... I have just added a couple photos of and from one of our Cerec colleagues
.... Alessandro Devigus ... He owns the www.cerec.net
web site Tell em Doc Hemp Sentcha! ... This is also a good site to find a Cerec
dentist near you.
Today he posted these photos of himself ... It does show the longevity of these Cerec
restorations and why ours are doing so dang well. You must remember that this was
in the year Cerec was invented and was made with one of the first Cerec prototype
machines. The subsequent Cerec 2 & 3 machines have gotten even better. Below is
the email and photo's Alessandro sent.
Dear colleagues
Here are 5 CEREC inlays (showing both sides) I received in 1986 as a student at the
Zurich dental school... the inlays where made with the yellow CEREC prototype...
they don't look nice but they are still there ... and CEREC has improved over the
last 20 years.
Alessandro Devigus
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
Note ... I had suggested a Cerec meeting and or regular type work shop at a main
stream USA national or San Francisco type Dental Meeting that all Cerec and non
Cerec dentists could attend. And at the normal affordable costs ... not the $2000
per head meetings that almost all the current cult type meetings currently are.
Doc Hemp
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 years later. I still
don't opt for deep grooves ... want all the strength we can get. ... Oh ... and
I charged for that one ... ( ;> )
This page has turned into a verbose journal like page where I update my experiences
randomly and periodically with this product. There will be redundancy, etc. so
those thinking of purchase can see how a newbie evolves month by month and now
year by year with this new technology. As always we NEVER get any free perks
from anybody or SELL anything that might influence my rambling. This is all
my personal opinion and summed up from my personal experience. Use
what you can, can what you can't, you can can it can't you?!
8/13/07 .... Well ... We finally had our first fractured Cerec in over 5 years ....
The mesial fractured in one of our large Cerec MODFL inlay/onlays ..... BUT BUT BUT
.... It was on one of my very good friends that is not human! ..... I had finally
gotten him to quit smoking ... but un-be-knownst to me he went to Chewing tobacco
with sugar in it and kept it inside his cheek along side his teeth ... He had a
decay problem before that now escalated into rampant decay with decay below the
mesial and distals on the root surfaces of several teeth. The Cerec lost
it's support and fractured into the space. It had been in place for about 4
years with no problem.
Like I said this is no ordinary person ... Richard is a 2 time world champion drag
boat racer that I have since gotten into car racing too after I talked him into
buying a Ford GT 40 ... He wails on his teeth like he does his boats and cars!
.... In fact this past year he hasn't done so well .... Everything has been breaking
on his boat (and now his teeth too!). What I did was bond a Heliomolar MO into the
space. No sense doing more until he can get back on track.
We did have one other natural facial cusp fracture off an upper bi-cuspid and it
took a little bit of the Cerec with it when a gal tried to open a metal can of
glue that had a metal lid with her teeth ... I simply made a chairside veneer and
bonded it into the cerec.
11/24/06 Update ... Now well into our 5th year ... And .... I finally had an entire
lingual natural tooth fracture off adjacent to an existing occlusal facial Cerec a
couple of months ago in a very traumatic situation. I sand blasted, pinned and
fused back into the existing Cerec ... no more problems yet. ... But ... We still
have not had even one Cerec fracture yet and than includes an inordinately large
amount of 2nd molars too.
... Reflecting our extraordinary success rate I feel it may be due to the fact that
we only do Cerecs on the deeper and larger old amalgams or fractures where this
industrial strength porcelain has a lot of thickness for strength ..... areas
where I routinely have 2 + millimeters of minimum thickness ... not where I have
to remove good tooth structure to squeeze in a minimum thickness. And we also
still use the S.E. P & B along with the Tetric Flow technic on all cases ... but
... Whatever it is ... We still love it as well as the patients do!
10/07 .... In fact I recently had Doc Mike do 3 Cerec's on me with the same above technics and there is ZERO sensitivity!
1/01/06 Update .... I know many of you will not believe me but it is the truth ... Almost 4 yrs. and no Cerec failures yet ... Not one cracked, chipped or even the edge of a tooth next to one ... Plus ... Not one that is even sensitive! .... It is amazing and an extra ordinary run and only a matter of time ... but even then most should be repairable.
And our very close friend Doc Mike Birkhoff (who taught me everything I know about Cerec!) has now done over 10,000 Cerec restorations in the past 10 yrs. .... With very few remakes!
Doc Mike is like the brother I never had! ... We have been riding Harleys together for years! ... Becky and I have been over to Germany (Our Heimatland) many times and our two families are very close. He, Bridgette, Mike Jr. and Mandy stay with us over here also. His email is listed in our links below for any Cerec questions you might have. ... Just don't ask me! And ....(Click Here for Mikey's) How to Maintain your Cerec Milling Unit to keep it for a long time
11/19/05 .... Update .... Went to another Ray Bertolotti and Tin Man lecture ... Had Ray, Ryan and families out to breakfast and our place to ride the train. Went over with Ray this amazing success we are having with these Cerec's and no fractures or even one that is sensitive! He said it is no surprise to him for virtually these 4 reasons ... The cases we choose, the time and care we take, the way we are bonding them in. and due to the fact that they are milled out of industrial strength porcelain.
At the lecture he showed PJC's fractured with Unicem .. He doesn't' recommend it! ..I also told him about others experiences of black lines around the margins usually within a year.
Ray Bertolotti's Adhesion DDS Site Ray has been a friend of mine for a lot of years .... We both started doing bondodontics and porcelain veneers over 20 yrs ago. I started after I attended one of his very first lectures. He has done more for dentistry than any other one person I know of ... Without adhesion bondodontics there would be no Cerec, etc. .... Some of us may even talk him into Cerec some day (:>))
Now ... Back to the old stuff on this site ...
..... I do mostly fractured cusp and cracked tooth syndrome cases ... and anything with deep amalgams we can get an O.I. on ... I use the Cerec as a conservative tool to circumvent the need for full tooth cut downs as in full crowns. We haven't done as many per year as most ... but I pick our cases by doing the ones with the deepest fillings already with plenty of room for porcelain. .... I still us full gold especially on 2nd molars I we can't get a good O.I. ... Porcelain to gold with Gold occlusals in esthetic cases .... But our Cerec crowns are holding up very well too and look fantastic. I use these where we can get a good unobstructed image and there is plenty of room.
I am sorry but I am often just too busy to keep this and most of the other 200 web sites I started up to date anymore.
But .... I did take time to purchase 20,000 of Schick Technologies 9/30/05 yesterday ...Especially since it very well may be merging with Sirona in early 2006! ... And, even if they don't ... we have had their digital xrays for nearly 10 years now ... It is the future and can hardly go wrong.
9/14/04 .. a note on powder removal ... as soon as the image computes correctly we remove the powder with water .. I use a new applicator brush and scrub the powder away as the assistant washes with the water spray .. comes of easily ... try it. .... Like I have said .. never a failure or sensitivity .. So .. It works .. I then turn and show the patient the design instead of me being almost done before the assistant is through struggling to remove the powder by herself.
10/11/04 .... You can not match the esthetics, strength, lack of sensitivity and durability of Tetric Flow with Clearfils S.E. Prime & Bond for all Cerec Inlay/Onlays, 3/4 and full crowns. The light will penetrate these too due to the 4 micron density of the industrial blocks we carve them out of. I still use Photo Bond and the Tetric Flow or a thinned down Densply TPH for our Veneers
The milled porcelain is the same hardness, thermocoeffiecent of expansion and 4 micron particle size as our natural enamel. It is fused into and onto our damaged teeth with great strength and success! Negating the need for full caps or crowns in many cases! It is not for everything, but will decrease our initial full crown coverage by probably 75 - 85%. It is the next step in our conservative bondodontics approach to dentistry. Dr. Mark Morin has actually milled 2 anterior crowns out of human enamel grown in petri dishes ( even with Fluoride introduced so it won't decay) grown at one of our leading universities as part of the human DNA body parts reproduction experiments. So .. in the not so far future we will be able to actually fuse human enamel back into our teeth damaged by decay and weakened by old silver fillings! .... When they sort the political ramifications out.
I love using it, especially instead of the old TMS pins and build up technic followed by the full coverage crowns! .. It is great for molars and bicuspids with one or more fractured cusps .... just remove 100% of the old amalgam and run your Cerec onlay over the missing cusp or cusps ... almost no build ups ever required any more, saving our Cerec patients these extra build up costs!! .
I still do traditional high noble crown and bridge, Composites and amalgams .. We never recommend replacement of good, well placed amalgams where there is still plenty of tooth strength. But this Cerec phenomenon is one of the most exciting things I and our patients have ever been involved with! .... But .. if you are going to Cerec and you are already as busy as you can possibly be anyway ... don't do it simply to make more money ... you only save what you might have paid in lab bills and the difference above and beyond which you would have done during the cerec time anyway. It is not necessarily a quick pay off. Fortunately I didn't get it for that, and I refuse to work any more hours or days! The patients love and will demand the Cerec ... Our cancellation list is usually very full and I have always been booked 1 - 2 months ahead anyway. Economically It would be a great practice builder for anyone with open book time or one wanting to expand and take on an associate or put in more hours.
2/20/04 .. Again .... This Cerec is just one more part of our armamentarium, not the only part, to treat the patient completely in the best way possible. In my opinion, old subgingival restorations, etc. are still best served with a high noble full gold crown, with bonded build ups or even Amalgam. We never use the Mercury scare tactic to unnecessarily remove all of a patient's good functioning amalgams. We still send most multiple porcelain veneers & crowns to the lab. It is just more energy, time and cost effective.
6/15/03 a breaking note about cracked tooth syndrome ... We always have isolated the flexing and painful cusp with the "Tooth Slooth" and then placed only high noble full coverage which are usually sensitive for some time after placement .. but I have now done quite a few of Cracked tooth syndrome cases with Cerec porcelain inlays & onlays over the flexing cusp ... using our standard S.E. Prime & Bond with Tetric Flow ... no sensitivity on any of them from the day they were placed to only 2 weeks or so, so far during the past year and one half. .... Even with our full high noble gold crowns in the past with ZnPo4 cement, we had sensitivity for several weeks to months afterwards followed by a root canal occasionally. Cracked tooth syndrome can not be repaired with a composite filling period! .... This is one place the Cerec stands alone ... Conventional 3week laboratory porcelain inlay/ \onlays have never worked. The immediate fusing in of the Cerec and it's compatibility to natural tooth structure has to have a lot to do with the miraculous curing of this problem.
Below see .. some of our very first Cerec Cases during our first week almost 4 years ago now.
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. And of course now with Cerec 3D one can do more with the software but it is important not to be game playing when one can polish it in in seconds anyway.
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 uncut 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!
Lower Bicuspid By the time he came back in the entire Amalgam had fractured out along with some more of the tooth.
This above is a Powdered prep of my 2nd Cerec ever (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.
After photo Designed in Extrapolation Raised the lingual cusp up a little in MR in Projection.
Before Photo After Photo
Powdered prep taken off the computer
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!
I must say Sirona has done a wonderful job in designing this Cerec 3 and now the 3D! History will show they have revolutionized dentistry! They have some of the best engineers in the world! They have the best manufacturing in the world! Patterson Dental has taken the bull buy the horns with this technology and run with it! Have invested millions and brought it to main stream dentistry. They should be applauded for this. .... But .. they have grown so fast they are not supporting their current users with parts and service like they should. And especially with used Cerec purchasers.
Maybe now with Madison/Dearborn having bought Sirona out things will improve ... And like I said Becky and I have bought some Schick (and hopefully soon to be Sirona stock too) because I believe in this process so much (and so far a very nice increase indeed!)
After 38 years of dentistry now! .. Almost 63 yrs old ... still going strong and enjoying myself immensely! "When we as dentists work because we want to, instead of because we have to, we have reached our personal Nirvana!" And some of us have been blessed with that attitude throughout our whole career. And we will not be financially stressed If we reinvest back into our practices regularly and properly instead of get rich schemes to retire early.
Maybe you can use some of the insights from our many pages. .. I enjoy all phases of dentistry and life in general ... My open attitude and humor irritate, offend and shock some ... No one can please everyone and no one has all the answers! ... So .."Use what you can, can what you can't! You can can it can't you?" "Use the best ... shine the rest!" "Don't be a Pest" ..... Remember ..."Contempt for others is bred by Conceit!".... Right J.K.? ... I for one, plan on still doing dentistry into my 80th year if my health holds out. Metamucil has already contacted me to sponsor our sites! (grin) ....
Here is a quote I ran across on the Cerec Chat group by William Davidson DDS which he gave me permission to use, which I think has merit in some cases.
"Some people who put down CEREC need to do so to justify their decision not to
make a large investment in bettering their patient care. No argument will
convince someone who is being righteous to cover up being cheap!"
William Davidson DDS.
Subject:
[cerec] CEREC at USC Dental School
Date:
Tue, 02 Mar 2004 23:50
From:
"Armen Mirzayan"
well,
hell has frozen over, pigs are flying, the world has come to an end.
University of Southern California Dental School has picked up a few
CEREC machines.
have any of you Europeans heard of Dr. Pascal Magne from Geneva. He
was jsut appointed to a prestigious position at their new Center. Has
a heavy background in adhesion and ceramics. was a big whig at the
university of Geneva dental school. i look forward to meeting this
chap
is this a sign of progress?
Update ... I did indeed receive an email from the new director of the USC CAD/CAM division verifying this ... So USC will probably become one of the top teaching spots in the Western USA for these new systems ... Cerec 3D The Hempster!
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 ;>)
11/30/06 ... Becky rented this suit to suprise a long term very favorite patient that always calls me Elvis ... We did a Cerec on her today .... a lot of laughs! ... We always have a lot of fun and the patients love it ... They usually say if we had a bar they'd stay all day .... ; - ) ... Enjoy the journey! ... Click on the photo for the low down
Since 12/28/05 ... But It fails and resets to 0 a lot.
Sorry, But we have over 3000 patient in the computer now and no plans for an associate
... So ..New patients are only seen by referral from one of our existing patients
and then only accepted if they don't have too much work to do, are willing to wait
their turn, and agree to regular appointments in the future. I have told perspective
patients for over 30 years that "If they don't care as much about their own teeth as
we do ... they need to find a dentist that thinks as little of their teeth as they
do!" (Another Doc Hemp Original Quote)
Cerec Instructional Link Site Our New Cerec Emails Received and Cerec Instructional Link Site
Many dentists and patients have their first exposure to CAD/CAM from our wild and wacky general dentistry site to this page or from the top of numerous search engines and follow our links first. This new page is devoid of all my personal rhetoric
Ray Bertolotti's Adhesion DDS Site Ray has been a friend of mine for a lot of years .... We both started doing bondodontics and porcelain veneers over 20 yrs ago. I started after I attended one of his very first lectures. He has done more for dentistry than any other one person I know of ... Without adhesion bondodontics there would be no Cerec, etc. .... Some of us may even talk him into Cerec some day (:>)) ... And Ray and Family Ride on our Steam Train
The World's 1st International Cerec 3D Lecture.
"During the first days of june 2003, 17 dentist from 7 different countries and 4
continents met in a secret place deep in the heart of Germany to learn all the tricks about the new 3D software!" .. Plus ... Many photos of the Rhine, Castles, German Cadillac Car Club!
