BISCO's patented D.T. LIGHT-POSTS are constructed from unidirectional,
pretensed, quartz fibers bound in a resin matrix. This
design produces a post with flexural strength exceeding
that of metal posts but with a modulus of elasticity
very close to that of dentin. The low modulus dissipates
stress rather than transferring and concentrating stress
in the residual root structures as seen with cast or
prefabricated metal posts.
Due to its translucency,
BISCO's D.T. LIGHT-POST will transmit light and
can be used with light-cured or dual-cured cements and
adhesives. This post will intimately bond to
the tooth structure and core build-up composite while
its passive taper respects morphology and conserves
tooth structure.
These
instructions must be followed for
validation of the optional 6 year limited
warranty on D.T. LIGHT-POST.
CLINICAL
PROCEDURE
With
the toothendodontically treated and filled with gutta-percha,
the remaining tooth structure is prepared according
to conventional principles.
PLEASE
NOTE: D.T. LIGHT-POSTS must not be handled with
bare hands/fingers, as the oils on the skin may affect
the bond strength of the post. Gloves should be worn
or forceps used when handling the D.T. LIGHT-POSTS.
1. SELECTION OF POST SIZE
Posts
are available in four different sizes to accommodate
a variety of teeth or canal sizes. Drills and posts
are color-coded for ease in determining which drill
is to be used with each post. It also aids in size identification.
-
Size #0.5 Post: Black
Pre-Shaping Drill: Black
-
Size #1 Post and Drill: Red
- Size #2 Post and Drill: Yellow
-
Size #3 Post and Drill: Blue
A.
Size and direction of canal is determined by radiographic
examination. A mylar radiographic guide showing the
various sizes of the posts is included with each system
kit.
B.
A general recommendation can be followed for post size
selection:
- Post #0.5 - Central
and lateral mandibular incisors
Anywhere else deemed appropriate for this size
- Post #1 - Central
and lateral mandibular incisors
Mesial and distal canals of maxillary molars
Maxillary and mandibular premolars
Mesial canals of mandibular molar
- Post #2 - Lateral
maxillary incisors
Distal canals of mandibular molars
Palatal canals of maxillary molars
Maxillary and mandibular canines
- Post #3 - Maxillary
centrals and canines
Palatal canals of maxillary molars
Distal canals of mandibular molars
Large/wide canals
2.
CANAL PREPARATION
A.
General recommendations to follow for post space preparation:
- A minimum of
3-5mm of gutta-percha should remain at the apex.
- Proper isolation
must be used.
B.
Remove gutta-percha with a #1 or #2 Peeso Reamer, #3
Gates Glidden or a heated endodontic plugger.
C.
Shaping the canal:
(1) Use the D.T. Pre-Shaping Drill (black) to complete
the preliminary preparation. Sodium hypochlorite may
be used in the canal as a lubricant, coolant and cleanser
with the drill. This instrument determines the final
depth to which the post will be placed and serves to
guide the final preparation with the subsequent drills.
(2)
An endodontic rubber stopper on the shaft of the drill
should be used as a guide for determining the length
of preparation with radiographic verification. In order
to ensure against root perforation while drilling, be
sure the drill is always positioned within the canal.
(3) Remove debris from canal with a water spray, followed
by drying with paper points.
D.
Final canal preparation:
(1) Use the D.T. Drills in order, starting with the
smallest, until the desired size is accomplished.
PLEASE
NOTE: Posts require the sequential use of the drills
as follows:
- Size #0.5: Use only the Pre-Shaping Drill (black),
no additional use of other drills needed.
- Size #1: Use the Pre-Shaping Drill (black),
followed by the size #1 Drill (red).
- Size #2: Use the Pre-Shaping Drill (black),
followed by the size #1 Drill (red), followed by the
size #2 Drill (yellow)
- Size #3: Use the Pre-Shaping Drill (black),
followed by the size #1 Drill (red), followed by the
size #2 Drill (yellow), then the size #3 Drill (blue).
(2) Ideally, the final canal preparation allows sufficient
space for the post and 30 microns around the post for
bonding materials.
3.
DETERMINING POST LENGTH
A. To determine the total length of the post:
Try-in the post and slide the rubber ring to mark the
desired position.
B.
Remove the post from the canal and cut with a diamond
bur or diamond disc.
WARNING:
Never use pliers to cut the post since the pressure
can destroy the structure of the post. In addition,
surface alteration of the post (sandblasting or roughening
with a bur) is contraindicated.
| When removing
the color-coded rubber ring, do so outside the mouth
to prevent accidental aspiration or swallowing of
the ring by the patient. |
4.
POST CEMENTATION
A. Post Space Preparation:
(1) To the canal, apply UNI-ETCH®* w/ BAC
(32% phosphoric acid) for 15 seconds and rinse with
water.
(2) Blot the canal with a paper point to remove excess
moisture.
(3) Apply adhesive (ONE-STEP®*/ONE-STEP PLUS OR ALL-BOND 2®*):
ONE-STEP/ONE-STEP PLUS
a. Apply 2 coats of ONE-STEP/ONE-STEP PLUS.
b. Blot the canal
dry with a paper point; repeat with a new paper point
until the paper point returns dry from the canal.
c. Light cure ONE-STEP/ONE-STEP PLUS
for 10 seconds. Position the light as close as possible
to the canal opening. Light access is necessary for
curing ONE-STEP/ONE-STEP PLUS in the canal.
NOTE: Using a halogen curing unit, such as VIP™* junior, with a minimum output of 500mW/cm2,
light cure for 10 seconds at close range (0-2mm). If
the light intensity is lower and/or curing occurs at
a distance (10mm), light cure for greater than 10 seconds.
ALL-BOND 2
a. Apply 2 consecutive coats of PRIMERS A & B to
root canal surface with endo brush.
b. Air dry for 5-6
seconds. Blot the canal dry with a paper point; repeat
with a new paper point until the paper point returns
dry from the canal.
PLEASE NOTE: The paper point step is important for removal of
any pooled adhesive or primers so that there is no interference
in complete seating of the post.
c. Apply a thin
layer of PRE-BOND™* Resin into the canal with endo
brush. DO NOT LIGHT CURE.
B. Post Cementation:
(1) Coat the post with ONE-STEP/ONE-STEP PLUS and light cure for 10
seconds OR place 2 coats of ALL-BOND 2
Primer B on the post and lightly air dry.
(2) Apply cement (DUO-LINK™* Base and Catalyst
Paste OR DUO-LINK Dual-Syringe):
DUO-LINK Base and Catalyst Paste
a.
Mix equal amounts of DUO-LINK base and catalyst into
a uniform paste (10-15 seconds).
b. Fill a UNIT-DOSE
NEEDLE-TIP with the cement, insert the plug and place
in the unit-dose syringe.
c. Inject the cement
into the canal. Start at the apical end of the canal
and withdraw the tip towards the pulp chamber. (As an
alternative, a lentulo spiral or paste filler may be
used to carry the cement into the canal.)
DUO-LINK Dual-Syringe
a.
Remove the Dual-Syringe cap and express some material
from the Dual-Syringe cartridge to confirm that it is
free of voids.
b. Attach intraoral tip to mixing tip and then attach
mixing tip to Dual-Syringe cartridge.
c. Express DUO-LINK
directly into the canal. Use of a lentulo spiral or
endodontic file will aid in coating the canal walls.
(3)
Place some cement on the post and seat in into the canal
gently. Maintain firm pressure for 5-10 seconds once
the post is seated.
(4) Remove excess cement and light cure for 40 seconds
by placing the light tip on the post.
(5) Once the cement has set, proceed with the core build-up.
5.
CORE BUILD-UP
(1)
Clean all surfaces that will receive the core material
(including the post) with a slurry of pumice and CAVITY
CLEANSER™* (disinfectant) or pumice and water.
Rinse and dry.
(2) Etch the tooth structure using an etchant, such
as UNI-ETCH or ETCH-37™*, according
to the manufacturer's instructions.
(3) Apply an adhesive, such as ALL-BOND, ONE-STEP or
ONE-STEP PLUS, according to the manufacturer's
instructions.
(4)
If using Unit-Dose Tips, LIGHT-CORE™* may be injected
directly into preparation, otherwise, dispense desired
amount of core material onto a light-protected mixing
pad by turning the syringe handle clockwise.
NOTE: To prevent excessive material from extruding from syringe,
turn handle counterclockwise immediately after the desired
amount is dispensed.
(5)
Place core material into preparation (and around post)
in increments (not to exceed 5mm).
(6)
Light cure each increment: TRANSLUCENT for a
minimum of 20 seconds at 500mW/cm2; BLUE for a minimum of 30 seconds at 500mW/cm2.
6.
FINAL PREPARATION
Conventional
principles of tooth preparation (Ferrule Effect) must
be followed for optimal results.
- Preparation
for final restoration must end on sound tooth structure.
- There must be 1.5mm of sound tooth structure beyond
the core material.
- Positive horizontal and vertical walls should exist.
7.
POST REMOVAL
A D.T.
LIGHT-POST REMOVAL KIT is available through BISCO. See
POST REMOVAL TECHNIQUE description and instructions
available with the D.T. LIGHT-POST REMOVAL KIT. (X-80692P)
INFECTION
CONTROL
|
PRODUCT:
D.T. LIGHT-POST |
RECOMMENDED |
NOT
RECOMMENDED |
DISINFECTION
All Chemical disinfection solutions
|
|
x |
CLEANING
Alcohol eg. Ethanol: 1-5 minutes
Boiling
Ultrasonic cleaning |
x |
x
x |
STERILIZATION
Hot air sterilization 120° C
Posts must be packed in a sterilization pouch/bag
Gas sterilization/Chemiclave
Steam sterilization/Autoclave Posts must be packed
in a sterilization pouch/bag |
x
x
|
x
|
| *
Unapproved sterilization may render the post unusable. |
STORAGE:
Store at room temperature (22°C/72°F). See individual
component labels for specific expiration dates.
PRECAUTION:
Unpolymerized resins may cause skin sensitization in
susceptible persons. In case of contact with the skin,
wash thoroughly with soap and water. Phosphoric acid
of UNI-ETCH is a severe eye irritant and tissue irritant.
If accidentally instilled into the eye, flush with copious
amounts of water and seek medical attention immediately.
In case of contact with other tissues, rinse immediately
with plenty of water for several minutes. Injury may
result if UNI-ETCH is allowed to remain on the skin
or mucosa for extended periods of time.
WARRANTY:
BISCO, Inc. recognizes its responsibility to replace
products if proven to be defective. BISCO, Inc. does
not accept liability for any damage or loss, either
direct or consequential, stemming from the use of or
inability to use the products as described. Before using,
it is the responsibility of the user to determine the
suitability of the product for its intended use. The
user assumes all risk and liability in connection therewith.
Optional 6 year limited warranty is available.
CAUTION:
U.S. Federal law restricts this device to sale by or
on the order of a dental professional.
* D.T. LIGHT-POST
is a registered trademark of RTD France.
UNI-ETCH, ONE-STEP, and ALL-BOND 2 are registered trademarks
of BISCO, INC.
VIP, PRE-BOND, DUO-LINK, CAVITY CLEANSER, ETCH-37 and LIGHT-CORE are trademarks of BISCO, INC.
U.S. only.
BISCO, INC.
1100 W. Irving Park Road
Schaumburg, IL 60193
U.S.A.
847-534-6000
1-800-BIS-DENT
www.bisco.com
CE ADMINISTRATOR
Bisico France -
Mr. Fred Picavet
L'Opera- BP. 60
13680 Lançon De Provence
France
Phone: 33-490-42-9292
Fax: 33-490-42-9261
U.S. Patent: 5,328,372
IN-083R5
Rev. 4/07
|
