Re: Fibre Posts


"W_B" <no_one@xxxxxxxxxxx> wrote in message
news:dtna5119klkeiual4oo10ir1qngrn4j2r2@xxxxxxxxxx
> On Thu, 7 Apr 2005 11:41:50 -0400, "Joel M. Eichen" <joeleichen@xxxxxxxxx>
> wrote:
>
>>> Cemented gold does not require a 'ferrule'.
>>
>>R E P L Y
>>
>>We are talking ending on solid tooth structure as opposed to ending on
>>composite or core buildup. A ferrule is like what holds a decent shovel
>>handle into the shovel itself.
>>
>
> Shovels always break at the ferrule.

No. They break above or below the ferrule. A ferrule is a metal ring or
cap that forms encirclement around something (pole, shaft, tooth, etc).
If you don't create a ferrule effect around a tooth with a post, then the
post gets all of the lateral stress from occlusion and transmits it down the
canal space.




.

Relevant Pages

  • Re: Fibre Posts
    ... > cutting away all of that extra core material while prepping the crown. ... That's the point of the ferrule. ... >>> the post first contacts the tooth. ... >> If a weaker fulcrum is further out along the lever arm than the stronger ...
    (sci.med.dentistry)
  • Re: JME/DrSteves Ferrule?
    ... >the ferrule, EVERY TIME. ... I spent enough years with a shovel in my hands to ... >know this first hand. ... the tooth become noticeably narrower. ...
    (sci.med.dentistry)
  • Re: Fibre Posts
    ... >>> Cemented gold does not require a 'ferrule'. ... A ferrule is like what holds a decent shovel ... > It is the ideal goal to end on solid tooth structure. ...
    (sci.med.dentistry)
  • Re: Fibre Posts
    ... > But crowns don't snap off the tooth at the height of contour. ... If your crown prep does not extend epically beyond the height of contour, ... >>> The internal stresses are enormous without the ferrule effect. ... >>> in compression. ...
    (sci.med.dentistry)
  • Re: Fibre Posts
    ... >>>composite or core buildup. ... A ferrule is like what holds a decent shovel ... > cap that forms encirclement around something (pole, shaft, tooth, etc). ...
    (sci.med.dentistry)