Retreatment with preservation of crown|
From: Marga Ree
Sent: Friday, February 17, 2006 11:11 PM
Subject: [roots] Retreatment with preservation of crown
Not the most beautiful crown, but the patient was very happy that
we could recement the crown after the retreatment. Removal of crown
with crown remover, removal of post with US, easy retreatment,
cementing of fiber post, used the crown as a mould for the new
In these cases the most challenging thing is to keep the field dry,
I use retraction cord impregnated with aluminum chloride, and finally
Expasyl (the green stuff, works great), before I make the build-up
and place the crown.
I see him back in 6 months, and told him it might be necesssary to
do surgery, if the complaints will not subside or the lesion will persist.
|The opinions and photos within this web page are not ours. Authors have been
credited for the individual posts where they are|
Geez Marga....this is fanstastic Tx.
What did you obturate with? I would have placed some MTA....thinking
if I need to do surgery...it's already there...I just gotta remove the
amalgam and replace it with enough retention. - Joey D
Thanks Joey, great point, why didn't I thought of this myself............
.maybe because I usually do MTA treatments in 2 appointments, and
I wanted to finish this one in one appointment, because of the removal
of the crown. - Marga
Hey....I do MTA in one appt's...especially on rotten kids with big apices.
...and it seems to work anyway. - Joseph Dovgan
Marga, you posted a case some weeks ago , where you used the metall lift .
Any specific reason you decided to use the crownremover in this case?
BTW excellent handled ( as usual). Best regards - Jörg
Jörg, The metalift cannot be used on anterior teeth, because of the path
of insertion of the crown. - Marga
Oooops, I should have answered my question by myself! Still a long way to go.
Marga: I have to respectfully disagree on this point. The metalift can be
used on anteriors, and I have done it successfully on many occasions. The
trick is to make the initial penetration and subsequent tapping parallel
to the long axis of the tooth in the cingulum area. Your case may have
had an unusual path but we have been largely successful in the removal of
both anterior and posterior crowns. - gary
hei Gary! you forgot closing your sandwich technique here!! ;-)
(I thought this could be of help in the future:
GARY, You are absolutely right, I was too imprecise in my response. I remember
having read in the users manual that it is only possible in certain situations,
like you described, when you can tap the precision channel parallel to the
long axis of the tooth in the cingulum area. I tried this on 2 different
occasions, but I was not lucky. The metal was way too thin to get a catch.
If you say that it can be done, I will try it next time. - Marga
Lol! To be clear, I have done far less on anteriors than posteriors for
obvious reasons, but I have been successful. In cases with poor cingulum
development, it may not work well. I don’t want to infer that it is universally
applicable. The only thing I have found that is is a carbide bur slotting
the crown and then a flat instrument expanding the crown, of course requiring
a new crown. gary