Finite guy 2015-12-04 17:03:01
Hi All: I have been griping about this for about a month on this
group. My fornt cap was not made properely 6 years ago and now it
comes off on a monthly basis. My new dentist is going to make new
impessions for the post and cap to get a better fit.
Last week my dentist re cemented the cap and post with a temporay
cement. He said to be carefull with the tooth until my appointment
next week(July 14). Here it is Sunday night (July 6) and the thing is
loose again! I tried to be carefull but that front tooth is really
difficult to favor.
I was thinking about using denture adhesive as a temporary bond just
to keep the tooth from falling out while I’m talking. I realize its
not strong enough to eat (or sleep) with. Is this an okay idea? I
haven’t called my dentist yet about this.
I’ll have to get a “squeezed in appointment ” to get him to re-glue
the thing for the 3rd time in a month, just to have him yank it off
next week make the new impressions for the new post. This is getting
to be a real pain. If this tooth continues to be a problem after he re
makes the post and cap, I am going to get the implant.
Also, I was told by a dental technician that accuracy of the
impression is of utmost importance. I assume that this is the reason
why I am having so much trouble now.
Joel m. eichen 2015-12-08 15:37:54
Here is the range of possibilities:
a. A longer, thicker, better-fitting pre-fabricated screw-type
(Dentatus) or carbon-fiber or Luminescence-type post, bonded, cemented
or otherwise put in there right.
b. A gingivectomy or a “crown lengthening” (Two different procedures)
to expose more of what is left so the new crown can stay put better.
This raises the “ferrule effect” issue that I believe still is a
standing principle of crown-dentistry.
c. Cementation with C&B Metabond (by Parkell) that unfortunately makes
the cementation irreversible. This means if there is any problem with
the tooth or root, the tooth will need to be yanked. However C&B
Metabond does have its place.
d. A cast-post and cast ferrule for those cases where the root canal
space is ovoid. You see the posts are all round. This means cemented,
bonded or whatever, there is tremendous lateral forces inside the root
This is why the crown will not stay put!
Step One is always to figure out the problem! Too many dental
mysteries are approached with the shotgun Approach ~ with you the
patient paying for all of the shot!
Try C&B Metabond first!
It might stay 30 years or so.
See above ~ ovoid post space, round post!
Joel M. Eichen, D.D.S.
We re Just A Duck Call Away!
STANDARD DISCLAIMER applies ~
meaning no one IN PENNSYLVANIA
has seen the tooth or teeth in
question so take this advice in
proper context ~ its the internet!
We is guessin’!
Steven fawks 2015-12-08 15:38:25
One last factor is the occlusion and what this patient does with that
occlusion (especially at night…NTI after new crown?).
Wb 2015-12-08 15:38:31
Excellent idea, one I recommend to my patients if
they go on vacation, etc… and have a problem.
But do call the dentist, he may want to ‘fit you in’
to recement the crown.
Yes the impression is important but not the only
factor in constructing a sucessful crown.