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Science Forum Index » Medicine - Dentistry Forum » cerec proglem
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Message |
| JAG |
 Posted: Wed May 30, 2007 12:07 pm |
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I am 72 years of age and have had a number of cerec restorations over
the last 10 years. However, they frequently fall out (at about the
rate of one every three or four months or so). My dentist re-inserts
them and tells me that there is nothing that can be done. Is this
true? I'm beginning to think they are not worth the cost. |
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| Steven Fawks |
| Posted: Wed May 30, 2007 8:47 pm |
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JAG wrote:
Quote: I am 72 years of age and have had a number of cerec restorations over
the last 10 years. However, they frequently fall out (at about the
rate of one every three or four months or so). My dentist re-inserts
them and tells me that there is nothing that can be done. Is this
true? I'm beginning to think they are not worth the cost.
I think some dentist that grab onto Cerec think that they can
bond a hunk of porcelain on any shape of left over tooth and have
success.
Though I don't use Cerec myself, I have seen several restorations.
Some are very well done and look like they will last forever.
Others have been brought to me in a Zip-lock bag and have a little
stub of a tooth that isn't going to last long no matter who bonds
it back on.
'Course there are also patients who are clenchers. They can tear
up almost any dental work in short order.
JME,
Steve |
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| Amatus Cremona |
| Posted: Thu May 31, 2007 7:42 am |
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After eight years of CEREC use, I find some will "pop" off. these are the
ones where I am playing the role of the "hero", and trying to coax an extra
year or three out of a virtually hopeless tooth which has very little
remaining solid tooth structure. If there is adequate tooth structure
remaining, and the restorations "pop" off, then there is a problem in the
preparation. The bonding of these restorations is extremely strong in
compression and tension. However, shear strength is not so great. If the
floor of the preparation is slanted, shear forces will tend to "pop" them
off. This usually simply requires that the floor be reshaped, and a new
restoration made. No big deal.
--
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Amatus
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"Steven Fawks" <tuthjockey@myturbonet.com> wrote in message
news:1180575336_2245@news.newsville.com...
Quote: JAG wrote:
I am 72 years of age and have had a number of cerec restorations over
the last 10 years. However, they frequently fall out (at about the
rate of one every three or four months or so). My dentist re-inserts
them and tells me that there is nothing that can be done. Is this
true? I'm beginning to think they are not worth the cost.
I think some dentist that grab onto Cerec think that they can
bond a hunk of porcelain on any shape of left over tooth and have
success.
Though I don't use Cerec myself, I have seen several restorations.
Some are very well done and look like they will last forever.
Others have been brought to me in a Zip-lock bag and have a little
stub of a tooth that isn't going to last long no matter who bonds
it back on.
'Course there are also patients who are clenchers. They can tear
up almost any dental work in short order.
JME,
Steve |
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