The Dent-Liner
Volume 2 Issue 2
Summer 1998
A BULLETIN DEALING WITH ISSUES FOR DENTAL HEALTH
PROFESSIONALS
New Bredent VKS HL Attachment
A dental laboratory owner from Montreal was discussing a
treatment
plan for a family member with our technical director just recently.
This individual stood six feet two inches and weighed two hundred and
twenty pounds. With a large individual like this, you usually have a
large mandibular to match. They were both concerned about the case and
how to go about about it. The lab owner was going to make an implant
bar on the existing six implants. He also wanted to incorporate the new
VKS-HL universal
male since the advantages of a pre manufactured male were required.
This HL universal male is composed of gold, palladium and platinum,
which can be cast on or soldered on. The high melting point is 1400
degrees Celsius. The plan was to incorporate six males on to the
implant bar and place six metal housings into the over denture. The
idea was not to activate all six immediately and have the option to do
so in the future if additional retention was required. Case
planning is a free service. For more information contact Dent-Line
of Canada at 1-800-250-5111 or e-mail us at info@dent-line.com.
Over Denture Stud Snap HL Universal
New From Bredent
Bredent's new Universal HL Patrix
The
new male is cast on or solder on. It is composed of gold, palladium and
platinum, with a melting point of 1400 Celsius. Available in 2.2 mm or
1.7 mm ball.
Stud-snap precision attachments are
primarily used on roots and implant bars for retaining either removable
partials or over dentures. the stud snap attachments must be
parallel to each other to provide ease of insertion and removal and
reduce wear potential. Do not engage labial soft tissue undercuts with
the denture base flange, as this will alter the path of insertion and
cause excessive wet and servicing requirements. Stud-snap attachments
are low in profile to reduce leverage upon the retaining abutments, are
easy for patient hygiene maintenance, allow physiological movement of
abutments and are easy to service. The advantages to the stud-snap are
that they may be used in a limited space since there are two sizes; 2.2
mm and 1.7 mm. They are easy to service and have an adjustable female.
They have a vertical and rotational movement. They are time proven and
the most cost effective over denture connector while easy to fabricate
with less tools or instruments required. The ball and socket movement
is kind to abutments and the hygiene maintenance for the patient is
very convenient.
Macro Aesthetics in Implants
Macro aesthetics comprises the external facial configuration. The
object of prosthodontics is to set parameters that go beyond the
restoration and improve the oral and facial composition by
incorporating a synergy between the soft tissue, the dentine and the
lips. This case study will incorporate Bredent's VKS Attachment System.
The goal is to acquire an acceptable occlusal vertical dimension and
rest vertical dimension creating a freeway space. Notably the right
size implant with a surgical template will ensure functional movements
with acceptable macro aesthetics. The lack of freeway space, however,
would affect the soft tissue between the upper lip and the nose, by
stretching them beyond their limits. the clinical procedure involved a
fifty year old male with a hybrid style, screw retained maxillary
prosthesis supported by six root form implants. The patient's
complaints included an inability to speak properly, clicking teeth
while he spoke, an inability to close the lips at rest and substantial
amounts of food collecting under the palatal of the fixed restoration.
The placement of the implants impeded the freeway space. A health
professional team composed of a prosthodontist, an oral surgeon and a
dental technologist performed a comprehensive restoration procedure in
order to improve the condition. First the existing implants were
removed and new ones were placed in strategic locations. After an
appropriate healing time, a low profile bar was fabricated to ensure
freeway space and that the vertical dimension was measured for
accuracy. Due to the patients lack of digital dexterity, the clinician
favoured the Vario Stud Snap attachment from
Bredent. The system is composed of 2.2 mm castable plastic male and
three replaceable dura plast
females with different degrees of friction (reduced, normal and high)
allowing three varying degrees of retention. A suitable cast frame work
was fabricated and the restoration was invested and processed utilizing
heat-cured acrylic resin. Afterward the OC normal matrices were
inserted in the housings on the cast frame work. When the prosthesis
was placed in the mouth, labial support to the lips and cheeks and
about 3 mm of freeway space in the anterior region were successfully
provided. Source: Practical Periodontics & Aesthetic
Dentistry, March 1998, Volume 10 No 2.
For further details contact us at 1-800-250-5111 or
e-mail us at info@dent-line.com
APS News Brief
The American Prosthodontic Society Scientific Programme will get
underway at the Hyatt regency Chicago on February 18, 19 and 20 of
1999. The theme will be "It's Not the Goals You reach, But the
Road You Travel". Some
of the seminars will be "The Current status of Colourless Metal Ceramic
restoration" by Dr. C. Goodacre, "Overview of Ceramic Systems" by Dr.
R.J. Cronin, "Prosthetis and Bio-mechanical Considerations of Implants"
by Dr. D.L. Root. There will be many more seminars that you can
participate in order to receive your continuing education credits. Don't
miss out!
Soldering the HL
When soldering the attachment one should position the male on the post
coping or bar with the parallel mandrel and fix with sticky wax. Invest
the coping and / or bar so as to get optimal positioning of the flame
and solder. Cleanliness is important. The surface of the units to be
soldered must be smooth and clean to allow wetting of the metal by the
solder. During the heating and actual soldering, the reducing portion
of the flame should maintain this cleanliness. The gold solder selected
should melt at a temperature low enough to permit flowing with out
injury to the alloy being soldered. It should flow easily at a
temperature only slightly above the upper limit of its melting range.
Afterward, divest, pickle in acid if necessary and polish to a finish
without polishing the surfaces of the HL attachment.
The Dent-liner; Vol. 2, No. 2
Publisher: Peter T. Pontsa RDT
Editor: A. Van Breemen BA
E-Mail: info@dent-line.com
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