Re: prognosis for this molar?

From: Dr. Steve (drsteve_at_no-spam.com)
Date: 10/21/04 

Date: Thu, 21 Oct 2004 01:45:15 GMT

On 20 Oct 2004 07:02:37 -0700, kenneth2002grant@hotmail.com (ken
grant) wrote:

>Recently I had a CEREC onlay done on my lower left first molar, as it
>had a crack running through one of its rear cusps (*exactly through*
>the cusp, not around it - it then appeared to curve around on the
>cheek side until it ran parallel to the gumline, three or four
>millimetres above the gum). The tooth had a large occlusal amalgam
>filling.
>
>The dentist said it just needed an onlay, and so only ground about
>two-thirds of the tooth down, leaving a third above the gumline. He
>used an intra-oral camera and pointed out to me that there was a crack
>running through the floor of the filling cavity, probably a
>continuation of the cuspal crack that I'd originally spotted. He said
>it wasn't a good idea to 'chase' the crack by grinding more of the
>tooth, so he just fitted the onlay (I was glad I'd found such a
>'minimally-invasive' dentist, BTW!)
>
>The restoration hurt on biting down for a few days (just like a
>freshly-filled tooth, in fact), but it's fine now.
>
>But what I'm wondering is: what sort of lifespan will this tooth have?
>I always thought that a crack in the floor of a filling cavity meant
>the tooth just had to be extracted - but is there more to it than
>this? I also seem to remember him saying this was a crack along the
>midline of the tooth - again, I thought this was the worst type, but
>then, all I know is gleaned from the Web.
>
>I asked the dentist about this and he just said that whereas I had a
>filling that was causing a wedge effect, I now have a strongly bonded
>onlay that's working to keep the tooth together. I understand that,
>but my main worry is: how long?
>
>I know it's impossible to comment on my case without seeing my teeth,
>but has anyone here got experience of how such a crack behaves once a
>CEREC onlay is in place?
>
>Thanks in advance
>
>Ken

I do this all the time. Once we start using 12x magnification, or
more, we see more cracks & can treat these sooner. If the crack
extends onto the roots & is advanced enough to allow bacteria to pass
down it, the tooth becomes hopeless. IL the dentist was able lo remove
all stained fracture, then longevity depends on Your nighttime
acting. Wearing an NTI every night will help. I feel this explains
why 4% of "normal" Crowns need RCT
..
Stephen Mancuso, D.D.S.
Troy, Michigan, USA

Writing on a tablet PC,so forgive me if the PC misreads my poor handwriting.

Relevant Pages

  • Re: prognosis for this molar?
    ... >>Recently I had a CEREC onlay done on my lower left first molar, ... >>continuation of the cuspal crack that I'd originally spotted. ... >>onlay that's working to keep the tooth together. ...
    (sci.med.dentistry)
  • prognosis for this molar?
    ... Recently I had a CEREC onlay done on my lower left first molar, ... two-thirds of the tooth down, leaving a third above the gumline. ... used an intra-oral camera and pointed out to me that there was a crack ... I always thought that a crack in the floor of a filling cavity meant ...
    (sci.med.dentistry)
  • pain from cracked tooth after onlay
    ... left jaw) treated for a crack which ran right through the rear inner ... The dentist gave it a Cerec onlay (which reaches down ... stretching in a curve from the cusp across the centre on the tooth. ... began to notice quite a lot of pain on biting. ...
    (sci.med.dentistry)
  • Re: pain from cracked tooth after onlay
    ... Cracks in teeth are NOT due to chewing. ... extends into a tooth without extracting the tooth and sectioning it. ... the crack can act like a "wick". ... will infect the pulp of the tooth and cause pain. ...
    (sci.med.dentistry)
  • Re: For VitreBond_naysayers and dental_naysayers and Joel_M_Eichen_naysayers ........ VITREBOND
    ... There is a crack in the tooth....... ... > new ideas about what might be wrong with his/her tooth, ... > some Vitrebond, and the pain I had while chewing is gone! ... > I doubt any nightguard would solve a sensitivity problem. ...
    (sci.med.dentistry)
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