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Proud members of D.I.A.C. since
1992
Dental
Industry Association of Canada
Association
Canadienne de l'Industrie Dentaire
dent-line of canada inc.,
1170 Concession Road 4, Loretto,
Ontario, Canada, L0G 1L0
Customer Service:
1-800-250-5111 for Canada
Tel. 519-942-9315
Fax. 519-942-8150
Exclusive
Distributors of Bredent Products in Canada since 1991
Proud Distributors for Renfert USA since 1991
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The Dent-Liner
Volume 4 Issue 4
Fall 2000
A BULLETIN DEALING WITH ISSUES FOR DENTAL HEALTH
PROFESSIONALS
Locking Pin System
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Locking Pin Snap E
The
Locking Pin Snap E incorporates metal parts made of titanium. The
bio-compatible plastic female provides long service life and soft snap
friction.
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The
bar type over denture is fast becoming one of the most common treatment
modalities prescribed to date. Although these bars improve retention,
they unfortunately are vulnerable to "Lift Off" in side to side or
anterior to posterior movements. The best solution so far is a locking
pin system which engages the bar through a hole in the bar or through
the cantilevered extension. The Locking Pin E from Bredent will prevent
Lift Off even with a Class III occlusion and also prevent lateral
movements which often creates sore spots. The Locking Pin E can
also
be utilized in existing cases where the initial retention has failed,
such as on an existing implant bar and also removable partial dentures,
such as in bilateral cases. The Bredent Locking Pin E (made of
titanium) can be glued to metal or set in to acrylic, where as the
Locking Pin A (a gold alloy) can be waxed in and cast to the bar. The
soft resin supported guidance sleeve results in a soft snap of the
locking pin when the locking pin is in the closed position. Also upon
opening, the snap indicates to the patient that the lock is
completely
open and the denture can be removed.In a typical case we used the
Locking Pin E on a maxillary with four implants. They were placed in
areas 13, 23 and 15 and 25. Plastic UCLA castable cylinders were fitted
to Bredent wax bars (1x6x8mm) to create a one piece bar. The bar was
cast and fitted to the model. The areas between 13 & 15 plus 23
& 25 were selected for pin placement. The position of the locking
pin is determined with the Bredent HM centre drill, with it a small
depression is prepared. Then the Bredent Mutli-Drill 1.5 mm is used to
drill completely through utilizing the Bredent milling & drilling
oil to reduce heat and the drill bit from jamming. The modeling pin E
is inserted into the drilled hole up the stop. This pin contains the
locking pin housing which is integrated in the over bar chrome casting
using Bredent Pi-Ku Plast modeling resin. Once set the rest of the
chrome casting superstructure is waxed. After completion of the pattern
the modeling pin E is removed by turning slightly with a pair of pliers
leaving the housing integrated into the pattern. Once cast the chrome
cobalt framework and locking pin housing is sandblasted with 100 micron
Al. Ox2. Bredent FGP Insulating Liquid is applied, 2 to 3 mm around the
pin hole, the contact area of the locking pin on the superstructure ,
the locking pin stud and pin sleeve and contact areas where the
adhesive may flow. The over denture bar and chrome casting are
assembled. A drop of the Bredent DTK adhesive is evenly spread in the
hole on the bar and chrome casting. The locking pin sleeve is covered
with a thin layer of DTK adhesive and pressed into the chrome casting /
bar assembly. Excess adhesive residue is removed after hardening (12
minutes or 5 minutes with UV light). After eight hours the locking pin
can be exposed to the stresses of opening and closing. The case is then
finished to the standards of practice. Locking Pin A or Locking Pin
E,
whichever locking pin attachment system you use, is an effective
alternative to traditional over denture bar attachments. They also
ensure predictable stability and retention by preventing lift off. This
results in a prosthesis with superior function and comfort for the
patient through reliable lab products.
Source: Peter T. Pontsa, R.D.T.
Bredent Products used in this case description:
| Locking Pin Snap E |
44000652 |
| Locking Pin Snap A |
44000654 |
| HM Centre Drill |
33000660 |
| Diatit Multi-Drill |
33000730 |
| Milling & Drilling Oil |
55000008 |
| Wax Bars 1x6x8mm |
43002650 |
| PiKuPlast Model Resin |
54000173 |
| FGP Insulating Liquid |
54001027 |
| DTK Metal Adhesive |
54000106 |
For more information on any bredent products mentioned
please call Dent-Line at 1-800-250-5111 or e-mail us
at info@dent-line.com.
Research Information on VKS
Latest
findings have shown that in a very limited number of cases, deposits
may be formed on natural teeth, dentures and fixed restorations in the
oral environment. If, due to insufficient oral hygiene, these crystals
are not removed, some exceptional cases of inclusion of these crystals
in the surface of the plastic matrix might result. This leads to an
abrasive effect on the stud of the patrix resulting in the possible
loss of snap. Very rare cases of this unexplained and previously
unknown phenomenon have been reported for the Stud-Snap attachments
sold (1 of 5000 patients). Extended service life of the Vario-Stud Snap
attachment is only ensured, if a transverse force distributor with
interlock in a 0o milling has been prepared by the dental technician.
Accordingly Bredent recommends the exclusive use of hard alloys (450
VH) and to clean the teeth, the denture and the fixed restoration two
times a day as well as to have them regularly checked by the dentist.
To ensure perfect function of the Vario-Stud-snap attachment, it is
necessary that the patient searches the snap point with his/her finger
when inserting the denture and locks it by pressing on it with his
finger.
Source: Bredent Research Department
Dentist gives Siberian Tiger a Root Canal
CORPUS CHRISTI, Texas (AP) -- Corpus Christi dentist Haysam Dawod has
had patients growl at him before, but never like
this. Dawod
performed a root canal Tuesday night on Thor, a 400-pound Siberian
tiger from the Corpus Christi Zoo. Thor really didn't want to go to the
dentist. It took five men to drug the reluctant feline and drag him
into Dawod's dental office. "He's not one happy camper," Dawod said. It
all started last week when Thor snapped his right lower canine after it
got stuck in a fence. Thor was able to tolerate the pain of an exposed
nerve, but couldn't eat his usual ration of quartered cow carcasses,
said Steve Dornin, Thor's owner and trainer. Dawod had never worked on
animals before, but volunteered for the dangerous task after one of
his patients, a zoo volunteer, asked him because veterinarians
don't
specialize in dentistry. After getting the tiger into a room in
the
dentist's office, veterinarian Steven Lee tried to put a gas mask on
Thor, but the tiger wanted no part of it and tried to leave. "Easy,
Thor, easy," Dornin said, as others cleared out of the way. He made a
bigger gas mask from an empty gallon milk jug and packing tape, and was
able to sedate the tiger. For nearly two hours, Dawod, Dornin and Lee
worked in short intervals, sedating the cat about every 10 minutes.
Dawod said it went well, but Thor will probably be cranky for several
days. The tiger will be fitted later for a gold cap. "I've had some
patients that have had the characteristics of a tiger, but never a
tiger," Dawod said. "Hopefully, this will be my first and last."
Source: Texas News, Thursday April 2, 1998
The Dent-liner; Vol. 4, No. 4
Publisher: Peter T. Pontsa RDT
Editor: A. Van Breemen BA
E-Mail: info@dent-line.com
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