RCT

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otheeravneetkaur@yahoo.com - 01 Apr 2008 16:52 GMT

what r chances of failure of RCT in lower premolar with curved root in
which apical transportation had occured ,patient have no pain
recently, in postoperative radiograph master GP cone is penetrating
outward from apical 3rd

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Mark & Steven Bornfeld - 01 Apr 2008 17:05 GMT

> what r chances of failure of RCT in lower premolar with curved root in
> which apical transportation had occured ,patient have no pain
> recently, in postoperative radiograph master GP cone is penetrating
> outward from apical 3rd

I could only guess. It depends on whether the case was vital when it
was opened (a vital case will do better) and whether the entire canal
was completely cleaned before the perforation occurred. I think it's
unlikely with severe apical transportation that the apical third has
been well instrumented. But you may get lucky. Make sure you tell the
patient.

Steve

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Mark & Steven Bornfeld DDS
http://www.dentaltwins.com
Brooklyn, NY
718-258-5001

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George - 01 Apr 2008 18:54 GMT

On Apr 1, 5:05 pm, Mark & Steven Bornfeld
<bornfeldm...@dentaltwins.com> wrote:

> otheeravneetk...@yahoo.com wrote:
> > what r chances of failure of RCT in lower premolar with curved root in
[quoted text clipped - 15 lines]
> Brooklyn, NY
> 718-258-5001

I'll just add that it also depends on the extend of the GP overfill.
Historically underfilled canals have fared better than overfilled
ones. Only time will tell!

Regards,
George

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Mark & Steven Bornfeld - 01 Apr 2008 19:00 GMT

> On Apr 1, 5:05 pm, Mark & Steven Bornfeld
> <bornfeldm...@dentaltwins.com> wrote:
[quoted text clipped - 23 lines]
> Regards,
> George

I hadn't heard that. In fact, the endos were always telling us that
our gp and sealer was so biocompatible that moderate overfills weren't a
problem.

Steve

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Mark & Steven Bornfeld DDS
http://www.dentaltwins.com
Brooklyn, NY
718-258-5001

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Amatus Cremona - 01 Apr 2008 22:49 GMT

I have seen lots of overfilled canals that never were a problem. Gutta
percha does very well. Silver point overfills were a source of failure.

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/

Amatus

/

>> On Apr 1, 5:05 pm, Mark & Steven Bornfeld
>> <bornfeldm...@dentaltwins.com> wrote:
[quoted text clipped - 30 lines]
>
> Steve

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Newbie@bix.nex - 01 Apr 2008 23:44 GMT

>I have seen lots of overfilled canals that never were a problem. Gutta
>percha does very well. Silver point overfills were a source of failure.

Agree but with them new fangled apex locators, you can obturate
'dead on' almost every time.

Transportation ? MTA.

GP overfill, just keep an eye on it.

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George - 02 Apr 2008 19:29 GMT

On Apr 1, 7:00 pm, Mark & Steven Bornfeld
<bornfeldm...@dentaltwins.com> wrote:

> I hadn't heard that. In fact, the endos were always telling us that
> our gp and sealer was so biocompatible that moderate overfills weren't a
> problem.

I've done some moderate overfills that have responded well, but both
GP and all sealers are cytotoxic to some degree. I was referring to a
study I once show that analysed a number of RCTs and their follow-ups
and found that 1-2mm underfills had a higher success rate than
overfills. Perhaps that would make sense if a significant number of
those RCTs were vital cases?

Regards,
George

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