Shortening the post should be done outside of the mouth.
The use of rubber dam is recommended.
The crown must cover the preparation of at least 1.5 mm of healthy dentin in order to get the ferrule effect.
ADVERSE REACTIONS
None known to date.
STEP-BY-STEP INSTRUCTIONS
1.
Root canal preparation: remove gutta-percha to preplanned depth with a Gates-Glidden, Peeso reamer
or Largo. Radiographic verification is recommended.
2.
Select the correct D.T. post size. Determine the post size according to the anatomical situation of the
tooth using the radiograph and the plastic calibrating card.
3.
Determine the length of the coronal build-up, which will account for
1
/
3
of the final post length. Remove
the root filling with the
D.T. Universal Drill
(rotation speed 1000-2000 rpm) as deep as necessary for
the post to be inserted to
2
/
3
of the root length. At least 4 mm of root canal filling should remain in the
apical region. In case of curved canal, this calculated length is not suitable.
4.
Shape the canal with the
D.T. Finishing Drill
corresponding to the selected D.T. post size, (rotation
speed 1000-2000 rpm).
5.
Try in the post, to check that the post is properly seated in the canal
6.
For D.T. LIGHT-POST position the colored O-ring as a cutting mark and then remove post. Shorten the
post to its final length with a diamond disc outside of the mouth.
Never use a crimping instrument, such
as wire cutters, as the pressure can destroy the structure of the post
. Remove the O-ring.
7.
Clean the post with alcohol.
8.
Apply etchant in the post space and to the exposed dentin for 15 seconds*. Rinse for 10 seconds.
Remove the excess water with paper points but leave surface moist. Do not put the etchant in con-
tact with the gingiva.
9.
Apply 2 coats* of the primer with a thin brush (e.g. Composibrush RTD) in the post space. Remove
excess using paper points and gently air dry all surfaces. Enamel and dentin surfaces should have a
uniform, glossy appearance. If not, repeat application. Light-cure the primer* inside the post space for
10 to 20 seconds.
10.
Apply a single coat of primer to the post. Gently air dry 5 seconds and light-cure the post for
10 to 20 seconds (if needed) outside the mouth*.
