Cerec-zeitung_gb_rz.qxd
NO. 3 December 2005 International Edition
PERFECT VISITING CARD
CONVINCING METHOD
All-ceramic veneers are
CEREC dentists and
Practice profile: from
unbeatable in every
inLab laboratories are
ivory to CAD/CAM
perfect partners PAGE 3
Simply try it and see
The war of the bottles
One evening recently,
BONDING AGENTS. Single-bottle bonding agents offer distinct advantages in terms of handling and con-
tended to use less aggressive
at a meeting of the
venience. But which bonding system will win in the end? Which material is best suited to which application?
solvents to dissolve this smear layer,
German Association
As far as all-ceramic inlays and onlays are concerned, the three-step total-etching technique is definitely to
for fear that phosphoric acid etching
be recommended.
would damage the pulp. This was
Assisted Dentistry, I
followed by the application of a
found myself in a
sports hall in front of
The strength and survival pros-
hydrophilic primer and an adhesive.
pects of all-ceramic restorations
To simplify matters, new primers
an indoor climbing
do not depend solely on the proper-
were developed containing organic
wall. I weigh in at around 100 kilos and
ties of the ceramic material. The
acids designed to dissolve the smear
on the evening in question was wearing
design and dimensioning of the
layer, and monomers designed
a sports jacket and ordinary shoes. All
restoration and the bonding method
to penetrate the demineralized
around me climbers were demonstrating
play a crucial role as well.
dentine. These adhesive systems
their athletic prowess by surmounting
depended on the separate etching
death-defying overhangs and crawling
Adhesive bonding or cementing
of the enamel and the dentine.
along beneath the ceiling like flies. I hesi-
If sufficient tooth substance
As such a clear separation was
tated until the coach standing next to me
remains, adhesive bonding is the
difficult to achieve, it was decided to
said, "What are you waiting for?" and
ideal technique. The adhesive bond
adopt the total etching technique,
pointed to a lady in an evening gown
transforms the remaining tooth
under which the enamel and the
and high heels who had already complet-
tissue and the restoration (inlay,
dentine were etched in a single
ed half of the course. Yes, what was I
onlay) into a single unit. The situa-
process. Unfortunately, this tech-
waiting for? The general situation was
tion is different with regard to
nique was prone to errors and re-
not going to get any better. What could
crowns and bridge abutments. In
sulted in postoperative hyper-
go wrong? Perhaps I should give it a try.
many cases little or no natural tooth
sensitivity. This prompted the devel-
How many people spend their time
enamel remains. In this case the
opment of acidic primers that
waiting for something to happen? Wait-
dentist can deploy oxide ceramic
simultaneously condition the
ing for times to improve, for new techno-
frameworks, which – due to their
enamel and the dentine. Today's
logy, for simpler adhesive bonding tech-
inherent strength – lend themselves
bonding systems deploy different
niques. Is it worth waiting? Not in most
to conventional cementing. By con-
Three-step total-etching systems have performed very well in long-term clinical trials.
strategies in order to dissolve/
cases, as experience has shown. A lot of
trast, silicate ceramics with a lower
These systems are indicated for all-ceramic inlays and onlays. By contrast, self-adhesive
remove the smear layer. The one
things are easier than they appear at first
degree of flexural strength (between
cements are easier to use and create a stronger bond with the dentine. They would
strategy involves the use of self-
sight – for example, adhesive bonding.
200 and 300 MPa) require adhesive
therefore appear to be more suitable for crowns.
conditioning monomer solutions.
Don't be intimidated by scientific theory.
The other approach involves total
Simply try it out for yourself, perhaps on
The adhesive bonding of all-
Dentine contains a higher concen-
way for stable adhesion to the den-
etching with the help of phosphoric
a model to begin with. Tens of thou-
ceramic restorations has meanwhile
tration of organic substances. It is
acid. (For an overview of the various
sands of dentists have taken this first
become a standard procedure in
hydrophilic and hence does not
adhesive bonding techniques see
step and can confirm the wisdom of learn-
modern dentistry. By applying 30 –
bond automatically with hydropho-
Less smear, better bond
ing by doing . By the way, the view from
40% phosphoric acid it is relatively
bic substances such as luting com-
A further obstacle to effective den-
the top of the climbing wall was fantastic
easy to create micro retentive struc-
posite. The advent of hydrophilic
tine adhesion is the smear layer.
– as was my sense of achievement.
tures on the enamel. Achieving
primers in combination with hydro-
Dissolving this smear layer is now
PD Dr. Roland Frankenberger, Polyclinic for
mechanical adhesion to the dentine
phobic bonding agents represented
standard practice for all bonding
Conservative Dentistry & Periodontology,
Dr. Wilhelm Schneider
represents more of a challenge.
a real breakthrough and paved the
systems. In the old days dentists
Head of CEREC product marketing atSirona
CEREC turns 20
CEREC Masters Symposium in Johannesburg
On 17 and 18March 2006
KNOW-HOW TRANSFER. Anterior
of Computerized Dentistry (ISCD)
a single treatment session. In
CEREC restorations are easy to learn
in Johannesburg last August.
typical "hands-on" fashion Rich
Published by: Sirona Dental Systems GmbH,
– and profitable
During this two-day event, 59
Masek showed a new method for
20th birthday of the CEREC system at a
Fabrikstraße 31, D-64625 Bensheim,
CEREC users profited from the milling anterior crowns with
special symposium ("20YC") in Berlin.
Tel.: +49 6251-16-0, Fax: +49 6251-16-2591,
Organized in collaboration with Professor
CEREC is not the sort of system in-depth knowledge of various reduced labial surfaces prior to the
that stands around unused in a
CEREC experts, including Dr. application of ceramic veneering
Mörmann and the Quintessenz publishing
Responsible for content:
corner of the treatment room. Quite
Klaus Wiedhahn (Buchholz/ Ger-
material. Both processes involve
company, the 20YC Symposium will be the
Dr. Wilhelm Schneider,
the opposite. Typically, dentists
many) und Dr. Rich Masek (San
just a few steps. The attendees
Sirona Dental Systems GmbH
perfect blend of science and entertainment,
begin with relatively simple restora-
Diego/California), both of whom
enjoyed not only their encounters
learning and celebration. Leading clinicians
Editorial team: Wilhelm Schneider, Hans-
tions such as premolar crowns specialize in highly aesthetic with these exceptional teachers,
Georg Bauer, Antje Casimir, Iris Hauer, Birgit
and academics will describe how easy and
Möller, Manfred Kern, Andrea Hamacher,
and inlays. They then progress to
anterior CEREC restorations. The
but also the classy surroundings
profitable it is to integrate CEREC into exis-
Christoph Nösser,
[email protected]
onlays and tooth-conserving partial
experts lectured on the basic prin-
of the Johannesburg convention
ting dental practices. There will be ample
Design and production:
crowns. The final step is the crea-
ciples of CAD/CAM restorations as
scope for informal discussions. To this extent
ergo Kommunikation, Köln/Frankfurt a.M.,
tion of veneers, anterior crowns and
practised in Europe and North
the 20YC Symposium is ideal for existing
implant superstructures. CEREC is
America. The attendees had ample
CEREC users and for all those who want to
Printing: PrintService Vertriebsgesellschaft
great fun to learn and use. This was
opportunities to put what they had
join their ranks in the near future.
von Wirth mbH, Willy-Messerschmitt-Str. 4,
very much in evidence at the recent
learned into practice. In an im-
Anterior CEREC Masters Sympo-
pressive live session Klaus Wied-
i Further information and registrations:
sium staged by the South African
hahn demonstrated how four
i Further information about next year's sympo-
CEREC Magazine is published every three months.
branch of the International Society
veneers can be created and placed in
sium is available at: www.iscd-africa.com
2 CEREC Zeitung
No. 3 December 2005
CEREC is grown up
Acceptance of new technologies
SETTING A STANDARD. It is 20 years since the launch of CEREC 1, the
become a normal procedure, taught
first computer-aided system for preparing all-ceramic inlays. At the time
as standard in all universities
Acceptance
few scientists or industry experts thought the new technology had a
today. Now there are materials on
the market that can be worked aseasily as conventional bonding
It took a little luck – and the right without framework for the anterior cements.
Maturation phase
people. The decision by Prof. Dr.
and premolar regions stay in place
Werner H. Mörmann and Dr.
permanently. Since 2003 the soft-
Marco Brandestini to start with
ware has become much easier to
Looking back it is now clear that
computer-aided production of
use, following the introduction of
the advent of CEREC 20 years ago
inlays rather than crowns, and to
CEREC 3D. And the adhesive bond-
opened up a new chapter in dentis-
leave the detailed finishing of the
ing of all-ceramic restorations has
try. This is a cause for celebration.
occlusal surface to the dentist, had
the effect of drastically reducingtechnology costs. By September
Number of CEREC systems sold
The acceptance of new technologies follows a classic S-curve. First of all, the available
1985 an initial CEREC prototype
technology and the initial applications have to come together and learn to negotiate
was ready to be patient-tested. As
the market in question. The technology and the applications then mature, the technolo-
luck would have it, August Behne
gy becomes easier to use, and the concept has to demonstrate that it can replace tradi-
and Harald Burger, departmental
tional methods. Towards the end of this phase the technology reaches full maturity and
and regional managers in the
catches on more generally. CEREC is now in this last phase.
Dental Division of Siemens AG,
chose to ignore the sceptics andpress ahead with the development
In association with publishers
There will also be plenty of op-
of the new invention. They had
Quintessenz, Sirona invites you to
portunities to compare notes with
recognized that computer-aided
a scientific symposium on 17/18
colleagues. And arrangements have
dental restoration would come to
March 2006 in Berlin. Here distin-
been made, in collaboration with
occupy a firm place in modern den-
guished speakers from all over the
the ISCD (International Society
tistry. Today CEREC is a standard
world will present their findings on
of Computerized Dentistry), to
procedure. A number of factors
the clinical acceptance of CEREC.
have 50 practising CEREC
have played their part: long-term
Practitioners and scientists will
"experts" on hand throughout the
clinical studies have shown that all-
show how easy it is to integrate the
congress to answer any questions
ceramic inlays, onlays, partial
CEREC is now recognized as a standard procedure. More than 16,000 CEREC systems are
method into the work of a dental
about CEREC, no matter how
crowns, veneers and full crowns
currently in use worldwide.
practice, and how profitable it is.
conditioning bonding systems con-
adhesion plays a crucial role.
tain an enamel and dentine adhesive
According to initial findings,
One, two or three which is separate from the acidic RelyXUnicem competes effectively
primer. Examples include AdheSE
with other more complicated bond-
ADHESIVE BONDING METHODS. Various methods are currently in
(Ivoclar Vivadent), Clearfil SE Bond
ing systems.
Silver Club use: three step, two-step and all-in-one.
(Kuraray), and One Coat SE Bond(Colténe-Whaledent). Together with
To sum up: dentists should decide
CEREC Club members save
their three-step total-etching counter-
on a case-by-case basis
money and are always up to
Three-step selective etching: This
between the ceramic restoration and
parts, these systems have the advan-
The three-step total etching method
long-established and by no means
the primed dentine. The adhesive
tage that the bonding agent is hydro-
has performed very well in long-term
obsolete method is applied in combi-
penetrates the demineralized den-
phobic. As a consequence their clinical studies. It is the recommend-
CEREC 3 is undergoing continu-
nation with adhesives such as Syntac
tine, where it forms so-called "tags"
dentine adhesion performance is ed method for all-ceramic inlays and
ous development. In the spring
(Ivoclar-Vivadent) and A.R.T. Bond
in the tubuli. This creates a so-called
deemed to be excellent. However,
onlays. The clinically proven multi-
we regularly issue new updates
(Colténe-Whaledent). After the ena-
hybrid layer. In this way the dentine
there is a lack of clinical data with
ple-step procedure should be used in
designed to boost efficiency and
mel margins have been selectively
is effectively sealed. The following
regard to the stability of the enamel
difficult cases, especially when the
enhance the user's job satisfac-
etched using phosphoric acid, the
products are designed for three-step
bond in cavities which are subjected
enamel margin is not clearly defined.
tion. For example, we have exten-
dentist applies one primer (A.R.T.
total etching: Syntac, A.R.T. Bond,
to heavy occlusal stress.
Simplified bonding systems (inclu-
ded the spectrum of clinical indi-
Bond) or two primers (Syntac) in
Gluma Solid Bond, OptiBond FL and
ding all-in-one adhesives) are a con-
cations, simplified the user inter-
order to condition and infiltrate the
Adper Scotchbond Multi-Purpose
All-in-one adhesives: These so-
venient and labour-saving alternative
face, introduced new tooth data-
dentine. The adhesive then forms a
called "all-in-one" systems (self-
in less demanding applications (e.g.
bases and automated the design
firm bond with the enamel and the
conditioning primer-adhesives) are
small filling volume, low mechanical
dentine. All the products belonging to
Two-step total etching method:
applied in a single solution. Examples
load, low retention requirements, low
this generation can also be deployed
The desire for greater simplicity
include Adper Prompt L-Pop (3M
aesthetic demands.). However, the
within the framework of the total-
prompted various manufacturers to
Espe), One Up Bond F (Tokoyama),
multiple-bottle systems have the best
etching method.
develop multi-component adhesives.
and iBond (Heraeus-Kulze). These
long-term clinical data.
These "one-bottle" systems are
products contain a combination of
Three-step total etching method:
deployed in combination with the
hydrophobic/hydrophilic esters and
PD Dr. Roland Frankenberger
1) Simultaneous conditioning of the
total-etching method. Examples
acid esters and perform the functions
enamel and dentine with phosphoric
include Prime & Bond NT
of an etching agent, primer and adhe-
acid (maximum contact time for the
(Dentsply), Excite (Ivoclar-Vivadent),
sive. The dentist can dispense entire-
dentine: 15 seconds). 2) Application
and Gluma Comfort Bond (Heraeus
ly with phosphoric acid etching and
The secret of success
of a hydrophilic primer. 3)
Kulzer). These products combine the
hence saves time. However, clinical
Application of a hydrophobic adhe-
functions of a primer and an adhe-
studies describe the adhesive perfor-
Adhesively bonded restorations are
sive. The acid not only removes the
sive. The principle of re-wetting mance of these products as variable.
permanently joined ("force-locked") to
smear layer but also demineralizes
corresponds to that of the three-step
According to the respective manufac-
the hard tooth substance. As a result
process. However, each of these
the dentine down to a depth of
total etching method. Long-term in-
turers, these products are not inten-
tensile forces cannot act on the under-
updates costs money. This is why
approx. 5 mm. If the cavity is over-
vitro studies have revealed that the
ded for the adhesive bonding of all-
side of the restoration. This prevents
it's definitely worth joining the
dried following the etching procedu-
two-step method produces an infe-
ceramic restorations.
cracking. The restoration is significantly
CEREC Silver Club. For a fee of
re, the collagen network in the denti-
rior bond with the dentine. This is
more durable. Preconditions for adhesive
?99.00 (£75.00) per month
ne may collapse. In such cases re-
due to the fact that the monomer
Self-adhesive cements: RelyX-
bonding are as follows: the etching of
members are automatically enti-
wetting is required in order to re-
compound remains hydrophilic even
Unicem is an easy-to-use self-adhe-
the tooth enamel; the conditioning of the
tled to all new software updates
store the penetrability of the dentine
after it has been cured and hence is
sive cement. As is the case with the
ceramic surface (etching with hydro-
and upgrades, as well as all new
(but only when acetone or ethanol-
capable of absorbing water from a
all-in-one adhesives, the strength of
fluoric acid followed by silanization); and
tooth databases. One thousand
based adhesives are used). Water-
moist environment. The adhesion to
the enamel bond is subject to varia-
the application of a luting composite. To
dentists in Europe have already
based systems contain enough water
the tooth enamel is the same as in
tion. By contrast, the dentine adhe-
prevent postoperative problems the
joined the Silver Club.
to restore the structure of the colla-
the case of multiple-bottle systems.
sion performance of this product is
exposed dentine must be sealed by
gen network. Next, a primer is ap-
very promising. In other words,
means of a dentine adhesive. In addition,
plied in order to enhance the wett-
Two-step self-conditioning bond-
RelyX-Unicem is suitable for bond-
dentine adhesives also contribute to the
ability of the dentine for the adhesive
ing systems: In this case it is no ing all-ceramic crowns, including
overall stability of the bond.
i Authorized CEREC dealers
(bonding agent). The function of the
longer necessary to etch the enamel
those with a flexural strength of less
adhesive is to create a uniform bond
with phosphoric acid. Two-step self-
than 200 MPa. In this case dentine
No. 3 December 2005
CEREC Zeitung
3
In pursuit of Veneers – the perfect visiting card
total quality
Where does my practice stand?
OUTSTANDING AESTHETICS.
A perfect smile is the ideal adver-
tisement for your dental practice.
It is not always easy for dentists to
assess the quality of their treatment
Harmonious anterior teeth testify
services. Many work on their own
to the dentist's commitment to
and have no basis for comparison.
total quality.
There is a lack of reliable bench-marks and statistics. In addition, thehealthcare systems in most countries
All-ceramic veneers are un-
beatable in terms of function
impose serious financial constraints
and form. They offer a permanent
that run counter to the provision of
and tooth-conserving therapy
top quality services. Against this
option in the case of multiple,
background the German Ceramic
defective fillings, malpositioned
Dentistry Working Party ("AG-Kera-
teeth, fractures, gaps, misshapen
Before: Anterior teeth prior to treatment. The CEREC procedu-
After: The finished product. Harmoniously and aesthetically
mik") has developed a special quality
teeth and staining (e.g. after the
re is performed in a single treatment session.
designed all-ceramic veneers.
assurance system for CEREC users –
administration of tetracycline).
a system that involves only a mini-
Veneers can also be used for the
mum input of time and effort. Each
intraoral repair of crowns and
participant selects a group of 30
bridges. The spectrum of indica-
patients and monitors a predetermin-
tions has expanded in recent years
All-ceramic veneers are scientifi-
The milled veneers can be individu-
ing veneers is child's play, thanks
ed set of parameters relating to the
and now includes palatinal veneers
ally characterized in the dental
to the three-dimensional visualiza-
initial restoration as well as its sub-
for the canines, interlocking Clinical studies extending over a
practice. It requires relatively little
tion of the preparation and the
sequent performance. The dentist re-
restorations following orthodontic
period of up to 15 years have proved
experience to create natural and
restoration on the computer moni-
examines the patients at regular
treatment and – last but not least –
that all-ceramic veneers are long-
aesthetic results. One particularly
tor. In addition, the CEREC soft-
intervals and sends the findings to
the use of occlusal veneers for bite
lived. The survival rates according
easy option is to apply composite
ware boasts several user-friendly
AG-Keramik. This data remains
adjustment in the premolar region.
to Kaplan-Meier are in excess of 90
stains to the rear surface of the
functions such as a veneer database
anonymous. The dentist can easily
All-ceramic veneers are popular
percent. As a result all-ceramic
veneer. The translucency of the
and the mirroring of contralateral
compare his results with the average
with patients, as they allow dentists
veneers have been officially recog-
ceramic material leads to a natural,
teeth. The practical benefits are
values recorded for his colleagues.
to conserve as much of the natural
nized by the German Society of
deep-seated shading effect. After a
obvious – and are evident as soon
In the case of deviations he can deter-
tooth tissue as possible. A key
Dental, Oral and Craniomandi-
few trial runs dentists soon realize
as the patient smiles. If the out-
mine to what extent his treatment
advantage of the CEREC procedure
bular Sciences (DGZMK). After 9.5
that the secret lies in choosing the
come is convincing, patients will
procedures differed from those of the
is that treatment can be completed
years CEREC chairside veneers
right degree of brightness. The so-
be more willing to pay more for
other participating dentists and take
in a single session. There is no
made of feldspar ceramic displayed
called "chameleon effect" of the
high-quality treatment services –
corrective action if necessary. This
need to fit temporaries. All-ceramic
a survival rate of 93 percent. The
silicate ceramic material compen-
and recommend the dentist to their
service is already available in
veneers are durable and retain adhesion to natural teeth is better
sates for any small differences in
friends and family.
Germany, Austria and Switzerland
their pristine appearance. Above
than the adhesion of intraoral
the colour shade.
and will soon be extended to all the
all, they are "gum-friendly". Gingi-
repairs to crowns and bridges.
Large numbers of CEREC users
other European countries.
val retraction and discolouration
(Wiedhahn, Int. J. Comp. Dent.
have included veneers in their stan-
can be practically ruled out.
dard treatment portfolio. Design-
lion successful restorations, dentists can rely implicitly on the
Building bridges with dental labs
clinical performance of the CERECceramic materials – regardless of
finalizing the design on the com-
whether these are processed in the
TIONS. Inlays, onlays, veneers
puter, the technician logs into the
dental practice or in the laboratory.
and all-ceramic crowns are typical
web portal www.infiniDent.de and
Numerous clinical studies have
CEREC applications in the dental
orders the abutment from the
confirmed that crowns and bridges
practice. But CAD/CAM technology
Strauman CARES production cen-
made of zirconium oxide – correct-
is capable of a lot more besides.
ly fabricated and bonded – are
With the help of inLab dental tech-
easily on a par with conventional
nicians are in a position to create
The right material for every
materials in terms of longevity. The
crown copings, bridge frameworks,
extension of CAD/CAM technology
telescopic crowns and implant
For many years Sirona has main-
to dental laboratories has enhanced
abutments in tried-and-tested
tained a close working relationship
the clinical applications spectrum
with two leading material manu-
of CEREC, especially with regard to
facturers. VITA Zahnfabrik and
large-sized restorations. inLab is
Dentists have CEREC; dental labs
Ivoclar Vivadent supply fine-struc-
the perfect solution for CEREC
have inLab – i.e. a clinically,
ture feldspar ceramics as well as
users who are under time pressure.
aesthetically and economically
infiltration and oxide ceramics with
And in cases where the highest
convincing method for producing
a higher degree of flexural strength
aesthetic standards have to be met,
all-ceramic restorations. Launched
and fracture resistance. The inLab
the dental technician has the option
in 2001, the inLab system deploys
3D software now includes the Merz
of applying manual layering tech-
the same CAD/CAM technology as
Dental artegral® tooth database.
niques after the restoration has
CEREC and hence embodies two
This means that dental labs can
been milled.
whole decades of acquired CEREC
offer prefabricated anatomically
know-how. Together, the two
shaped resin-based tooth restora-
CEREC practices and inLab labora-
systems cover a complete spectrum
tions. Last but not least, Sirona co-
tories are an unbeatable combina-
of clinical indications. "It's in-
operates with BEGO Medical in the
tion for aesthetic, clinically proven
credible what the small inLab
area of metal alloys. Two different
and cost-effective dentistry. The
system is capable of," says Dr.
The dental lab takes care of the more complex restoration assignments – for example,
products are available: the high-
dentists and the dental technician
Bregler from Offenburg. In his dual
multiple-unit bridges (here: zirconium oxide)
gold alloy Bio PontoStar++ and the
apply the same basic technology.
role as dentist and dental technician
cobalt-chrome alloy Wirobond C+.
This provides the basis for a perfect
he is ideally qualified to assess the
nium oxides are used, it is possible
scanned by the inLab system.
Frameworks made of these materi-
division of labour: the dentist is
extent to which inLab has pushed
to create bridge frameworks with Before the milling process com-
als – as well as their high-strength
responsible for chairside restora-
back the frontiers of computerized
an anatomical length of up to 40
mences the software checks that the
ceramic counterparts – can be de-
tions and assigns more complex
millimetres. WaxUp 3D is the ideal
restoration complies with the pre-
signed "in-house" and then ordered
tasks to the laboratory, secure in the
choice for complex restorations
scribed minimum wall thickness,
from the infiniDent production
knowledge that he or she will re-
3D software delivers extremely
(e.g. implant superstructures and
thus eliminating any potential weak
centre in Bensheim. At present
ceive tried-and-tested CEREC quali-
stress breaker attachments design-
points. Unveiled at IDS 2005, the
infiniDent is available in Germany,
The software component Frame-
ed to compensate for differing
Abutment 3D software component
Switzerland and Austria. In the
Work 3D is intended for the fabrica-
insertion axes in multi-unit
allows the technician to design cus-
coming months the service will be
tion of crown copings and bridge
bridges). In this case a conventional
tom abutments for the Straumann
extended to France and the USA.
frameworks. If high-strength zirco-
wax model is created, which is then
Dental Implant System. After
On the basis of more than 12 mil-
4 CEREC Zeitung
No. 3 November 2005
From ivory to CAD/CAM ceramics
Jacques Raynal, a dentist practising in Lodève, upholds the best traditions of French dentistry
while also being receptive to modern treatment methods. He has offered CEREC restorations since 2001.
French dentists pioneered the use Parisian dentist Nicolas Dubois de viates the need for in situ impres-
of natural enamel-coloured
Chémant enlisted the aid of apo-
sions and temporary restorations.
materials for dentures. As early as
thecary Alexis Duchateau to fire
In recent years he has achieved a
1723 Pierre Fauchard wrote a stan-
dentures in porcelain. Dentistry has
success rate of 99.4% with the new
dard work on dentistry in two vol-
come a long way from ivory to method (taking into account the
umes entitled "Le chirurgien den-
silicate ceramics: but French den-
start-up phase).
tiste, ou, traité des dents". Because
tists have always been receptive to
it contained detailed treatment
Patients and practitioner alike
instructions, the book was also
benefit from the new method.
translated into German and French.
Raynal opts for the CEREC system
Today the CEREC procedure is an
Fauchard showed how a mobile
Jacques Raynal opened his dental
integral part of Raynal's practice
denture made of ivory could be practice 20 years ago, after gradu-
concept. His patients appreciate the
attached to the remaining jaw struc-
ating from the University of
aesthetic benefits and the per-
ture by means of a metal socket.
Montpellier. Over the years he
manence and durability of the
His contemporary Claude Mouton,
extended his range of treatments ceramic work, while Raynal likes
official dentist to the French King,
to include fissure seals for children,
the reduced lab costs. The money
published his "Essay d'odonto-
periodontal treatments, endo-
saved here is used to expand the
technie" in 1746. Here he described
dontics and surgical procedures
technical facilities of the practice
the manufacture of gold crowns
involving implants. From the outset
and allow him to offer additional
and the treatment of root canals. In
his main concern was to offer his
modern treatment methods. This
addition he suggested the appli-
patients biologically sound and is, of course, good news for
cation of an artificial enamel clinically tested dental care. In 2001
Raynal's patients, who are sprea-
coating to the labial surfaces of Raynal decided to add all-ceramic
ding the word fast throughout the
his metal constructions. Etienne
restorations to his range of treat-
local region. As a result, the CEREC
Bourdet, another royal dentist,
ments. Having compared a number
method is becoming more popular
Available as an option since 2001, the CEREC method is very popular with Jacques
experimented with artificial teeth
of different CAD/CAM options, he
by the day in the département of
Raynal's patients. Raynal charges between 200 and 650 euros for a CEREC restoration,
made from ivory. And in 1790 the
chose the CEREC system, as it ob-
depending on complexity.
sionalism and speed
BUILDING CONFIDENCE. Fifty UK dentists who regularly carry out
CEREC treatments attended a special refresher course at the old Formula
One racing circuit at Goodwood.
One day's training on the CEREC patients. CEREC practitioners were
system and one day's training
encouraged to tackle the pre-
in the cockpit of a racing car: paration of veneers with increasedthe Goodwood meeting offered
confidence: it's much easier than
CEREC-trained dentists in the UK
one might think! And of course
the perfect blend of work and plea-
they were given lots of helpful hints
sure.Two days, one motto: "Perfec-
and tips, which is exactly what
tion, professionalism and speed".
CEREC dentists want: one small
On day 1 the CEREC practitioners
pointer can make a huge difference,
learned about the professional
particularly in terms of making the
bonding of inlays and onlays. For
software easier to use. On day 2
i Auskunft erteilt:
[email protected]
maximum security dentists are
the emphasis was on fun and re-
advised to use traditional adhesives
creation: time to hit the race track,
for this purpose. As the discussion
with a choice of Ferrari, Maserati,
between participants and speakers
Porsche, vintage car or full-blown
showed, CEREC practitioners were
racing car. Whatever the vehicle,
all agreed that all-ceramic crowns
the driving challenge is always the
without framework can be self-
same – to find that ideal line
adhesively bonded in place with no
through the bends that gives you
clinical risk. And this method also
the perfect lap. And it was like
saves dentists a lot of time. Another
the day before: most people
section of the program looked at the
discover that they have hidden
appeal of CEREC veneers for
C O M I N G S O O N
27/28 January 2006 CEREC Advanced Training Course (with live treatment sessions)
Bensheim Course conducted in English Dr. Helmut Götte Details from: Birgit Moeller,
Tel. +49 6251 16 2096,
[email protected]
17/18 March 2006 20 Year CEREC Anniversary Symposium Berlin Conference
language English with German translation More information at: www.20YC.com
8 April 2006 CEREC Veneer Course London Course conducted in English
Dr. Alessandro Devigus Details from: Birgit Moeller, Tel. +49 6251 16 2096,
[email protected]
Source: http://www.sirona.it/ecomaXL/files/cerec_zeitung_international_issue_03_2005-12.pdf&download=1
Excretion & internal environment of the body. In vertebrates the two functions of excretion and osmoregulation are • Excretion is the elimination to waste products from performed by kidneys and their associated structures in urinary system. • Waste products are unwanted and toxic by-products • The organs which form, store and void the urine
ESTADO NUTRICIONAL EN NIÑOS CON DREPANOCITOSIS DE UN HOSPITAL UNIVERSITARIO DE TERCER NIVEL DE ATENCIÓN DE CALI, COLOMBIA Y POSIBLES FACTORES DE RIESGO SOCIODEMOGRÁFICOS DIANA SORAYA RENDÓN-CEBALLOS, M.D. , CARLOS ALBERTO VELASCO-BENÍTEZ, M.D. , CARLOS ANDRÉS PORTILLA-FIGUEROA, M.D. , MARÍA VICTORIA BOLAÑOS-GALLARDO, Bact. ,