The Dent-Liner
Volume 7 Issue 3
Summer 2003
A BULLETIN DEALING WITH ISSUES FOR DENTAL HEALTH PROFESSIONALS
The Enigma
Denture System
The
Engima Denture System consists of the enigma denture tooth, the colour
tone system and a high impact denture base acrylic. Used together the range
of aesthetic possibilities becomes almost endless. This is why life like
denture teeth and gums, personalized tooth positioning and the resulting
improved lip support are all essential for improved denture appearance.
This is also why the improvements in patient self confidence and social
freedom are so dramatic and rewarding to the dental team. It is impossible
to overstate the importance of dentures to the wearer yet they remain one
for the most challenging aspects of modern dentistry. As dental health
in the population improves more patients feel embarrassed about wearing
dentures and like to keep this fact their secret. Naturally as dental professionals,
we frequently notice patients who wear dentures as do their family and
friends. Often the teeth chosen are too light for the patient’s age or
too small for their face or are set up unnaturally in perfect alignment.
However just as much a give away are teeth that look artificial or dead
through the lack of sufficient translucence, inadequate colour change from
neck to body, unnaturally wide necks or the absence of small imperfections
such as demineralization. These factors defeat privacy reducing the denture
wearers chance of feeling attractive. They lose confidence and smile and
laugh less with friends, family and work colleagues. They may even cover
their mouth with a hand while talking or smiling. This is why life like
denture teeth and gums, personalized tooth positioning and the resulting
improved lip support are all essential for improved denture appearance
and also why the improvements in patient self-confidence and social freedom
are so dramatic and rewarding to the dental team. The enigma tooth has
been created to produce life-like teeth of such vitality that the dentures
become a secret shared only between the patient and their dental health
professional. The enigma system uses advanced tooling and precise computer
control of multiple layers to reproduce the colour variations found in
natural teeth. Subtle Internal Mamelons; this is one of the features that
make the enigma teeth look real. By replicating the internal structure
of natural teeth, these mamelons make enigma dentures appear more realistic.
Greater Opalescence; this effect can be seen in natural teeth as light
travels through them. With the enigma tooth, this feature creates a three
dimensional look. Demineralization Points; small imperfections appear as
natural teeth develop. By including these subtle imperfections into the
enigma teeth, it makes the dentures look not so perfect as to be
believable. Darker Necks; by precisely layering colours, enigma teeth recreate
the many colours found in any natural teeth. Over time, natural teeth gradually
darken and their colour variation intensifies as we age. We instinctively
know something is wrong when somebody has white flawless teeth. Even naturally
light teeth contain a wide range of shades and translucencies. With the
enigma system tooth shapes are carefully chosen to look natural. They have
colour changes from the neck to the body of the teeth and subtle demineralization
points which mimic nature. These factors increase denture privacy and increase
the denture wearer’s chances of feeling attractive. As a result, the enigma
denture system will continue to create exceptional dentures and the enigma
dentures will not only look good now but will continue to do so in the
future. Source; Peter T. Pontsa RDT. For further information
contact us at info@dent-line.com
or call us at 1-800-250-5111 or Leach & Dillon at 1-800-535-2633.
Vario Soft 3 Attachments
The
Vario Soft 3 extra-coronal precision attachments are primarily selected
when the retaining abutments are relatively small and intra coronal attachments
would create over contouring. The VS3 also requires less tooth reduction
and is designed to be a passive insertion rather than snap into place.
It is ideal for patients who have limited manual dexterity, or the prosthesis
has a difficult path of insertion and removal. Traditionally extra coronal
attachments are easier for patients to insert and remove. Another problem
is that when a patient does not always wear the removable denture as in
intra coronal females on the retaining crown, food debris will accumulate
thus making seating of the removable denture difficult at best. The Vario
Soft 3 extra coronal precision attachments are resilient due to the
duro-plast retention sleeves. This allows free movement of the prosthesis,
to distribute potentially destructive forces or loads away from abutments
to support tissue and bone. The fewer abutments remaining and the weaker
the abutments are, the greater the need for resiliency or free movement.
The Vario Soft 3 is very cost effective and has been proven for many years
in thousands of cases, and guarantees success with every restoration
for both mandible and maxillary bilateral removable partial dentures. In
the case of uni-lateral free end removable partial dentures, they should
be cross check stabilized. The health professional and the patient benefit
from the Vario Soft 3 as a low cost attachment that is resilient with a
passive fit, and three retention choices. The duroplast female retention
sleeve absorbs negative movements to protect weak abutments and provide
patient comfort. The VS3 only needs a full coverage abutment preparation
and provides the patient with easy insertion and removal. The only service
requirement is the quick and easy retention sleeve replacement at chairside.
The dental lab benefits with the Vario Soft 3 since it features time saving
and simple routine techniques, and requires no additional tools or instruments.
The plastic male component burns out cleanly and it may be cast in any
alloy to eliminate soldering and dissimilar alloys. The extra coronal design
provides for a properly contoured abutment that will enhance aesthetics
of the restoration. The laboratory procedure can include either single
or double abutments. After preparing the master model and dies, determine
the path of insertion, then wax full coverage crown patterns. Place the
males in a surveyor or paralleling instrument and position them on the
model adjacent to the wax patterns. Males must be vertically parallel and
should be positioned over the crest of the gingival ridge. The adjoining
area of the attachment is concave, thus allowing the male to be placed
in close proximity to the wax pattern, thus reducing the amount of leverage
exerted on the attachment. A milled in lingual rest will act as a stress
breaker. The male pattern has no sharp edges and can be adapted to the
ridge, respectively it can be shortened up to 40% in cases with limited
inter occlusal space. Once the male is fitted just cut off the parallel
mandrel and cast the retaining crowns. Then finish the cast crown and male
attachment. It is important to obtain a smooth surface without reducing
the size and shape of the male. Caution must be exercised to prevent alterations
to the dimensions of the male during finishing although a slight amount
of milling is permitted. Seat the finished casting on the master model
and also the yellow female sleeve over the male adjusting it to conform
to the dimensions of the male. The yellow female sleeve must be used when
duplicating as this ensures that the interior dimensions of the housing
sleeve are correct. Prepare the model for the casting. A wax housing sleeve
is included in the VS3 assortment. Place it on the refractory model over
the sleeve. The wax pattern guarantees that the housing is of uniform thickness,
when cast in chrome cobalt. This prefabricated wax component is quickly
fitted to the refractory model. Fill the area contracting the ridge with
wax so as to reproduce it fully in chrome cobalt. Next design and wax up
the
chrome cobalt casting according to the standards of practice. Place
Bredent retention crystals over the attachment in order to
provide the necessary mechanical retention for the acrylic. Trim and
polish the chrome cobalt casting. Do not electro-polish the inner
surface of the cast housing, as this could adversely affect its fit over
the female. Process the partial denture to the standards of practice, taking
care to keep acrylic from getting into the housing for the female retentive
sleeve. Insert the desired female using the insertion pin; red indicates
high friction, yellow normal, and green, reduced friction. For easy insertion
by the patient the top of the male should be slightly beveled or rounded.
To service and rebase the VS3, the female retention sleeve can be easily
removed using a pointed instrument to slide it from the housing. The replacement
retention sleeve be it high or reduced friction and can be inserted
effortlessly with the special insertion pin provided in the kit. The relining
is completed utilizing the standards of practice and should be done routinely
since failure to a reline will place excessive loads upon the attachment
and abutments causing potential fracture and failure. So a patient recall
program is important.
For more information on the Bredent attachments, contact us at
1-800-250-5111 or e-mail us at info@dent-line.com
Source: Peter T. Pontsa RDT
Ceramic
Separating Liquid
Bredent’s
Ceramic Separating Liquid Set consists of a die stone sealing liquid and
a ceramic separating liquid. After the sealing liquid has dried for two
minutes, the ceramic separator is applied. The extremely thin separating
film provides outstanding separation. Porcelain materials are layered directly
on the wet ceramic separator and because of its special composition it
prevents discoloration of the porcelain. It is suited for all commercial
porcelains including low fusing and can be utlilised for porcelain shouldered
margins, contact points and pontics areas.
Source: Peter T. Pontsa RDT. For further information, call Dent-Line
of Canada Inc. at 1-800-250-5111 or e-mail us at info@dent-line.com
Locking Pin System
The implant bar type over denture is quickly becoming a viable treatment
option. Although with the aid of riders and sleeves to improve retention,
the bars unfortunately are vulnerable to “Lift-Off”. The best solution
so far is a Locking Pin System which engages the bar through a hole in
the bar or through a canti- levered extension. The Locking Pin E from Bredent
will prevent “Lift-Off” even with a Class III occlusion and also will prevent
lateral movements which often create sore spots. The new plastic sleeve
design incorporates a positive snap in and out position which prevents
the attachment from disengaging unintentionally. The sleeve itself is made
of duro-plast, a thermo plastic material which can be replaced if the snap
wears out. The housing is made of bio-compatible titanium and its plunger
provides positive security and resistance to dislodgement. The Locking
Pin E can also be utlilised in existing cases where the initial retention
has failed, such as on an existing implant bar. In a typical case we used
the Locking Pin E on a maxillary with four implants. Plastic UCLA castable
cylinders were fitted to Bredent wax bars to create a one piece bar.
The Bredent Mutli-Drill 1.5 mm is used to drill completely through the
bar. The modeling pin E is inserted into the drilled hole up to the stop.
The modeling pin will provide the pin space in the denture wax up so that
when the denture is processed, there will be an area to cold cure the locking
pin and its housing directly into the denture. By using this process the
duro-plastic sleeve is not subject to the heat generated by the denture
processing procedure and will remain resilient from the onset. The locking
pin will ensure predictable stability and retention by preventing
lift off which results in a prosthesis with superior function and comfort.
Source; Peter T. Pontsa, for further details contact us at Dent-Line
of Canada Inc., toll free, at 1-800-250-5111.
Featured
Product: Renfert's New Wax-Profi
The Wax-Profi
is a wax heater that melts base waxes for full and partial dentures to
their optimum working temperatures. The large pot used in conjunction with
an electric wax knife or bunsen burner, produces outstanding results. The
pot maintains the wax consistency from liquid to spreadable and saves valuable
time waxing the denture to completion. The unit has an LED display which
indicates the temperature or heating status and the temperature can be
adjusted from 40º to 110º. The large wax pot can accommodate
four basic sheets of modeling wax.
For further information call Dent-Line of Canada Inc., at 1-800-250-5111.
Trade
News: Perfect Your Practice Conference
The Denturist Association of Ontario held their annual Perfect Your
Practice Conference at the University of Guelph this past June 5th, 6th
and 7th, 2003.
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| Here Peter T. Pontsa, RDT, on behalf of Dent-line of Canada, is presenting
his seminar on Precision Attachments for Implant Bars as interested delegates
look on. |
Dent-Line of Canada was also one of the exhibitors at the conference;
many exhibitors showed off the latest in dental materials and techniques.
|
The Dent-liner; Vol. 6, No. 3
Publisher: Peter T. Pontsa RDT
Editor: A. Van Breemen BA
E-Mail: info@dent-line.com
