The dentist has changed the occlusal morphology of the tooth. You (or the
treating DDS) added or removed a sloped surface. If the lower tooth impacts
on the mesial slope of a cusp, but never did before, parafunctional activity
will work to push the tooth distally. I have not had much success with
adding contour to redirect forces mesially, but it is always a thought.
Predictability says you need to either use elastics to close the gap, then
reshape the occlusal anatomy, or re-make the occlusion (new crown) paying
close attention to all sloped surfaces.
In the absence of parafunctional activity, the tooth does not drift
distally. You need constant application of a distalizing force to achieve
that. The act of making a crown does not create a *constant* force.

Signature
~+--~+--~+--~+--~+--
Stephen [What's a Temporary?], D.D.S.
Michigan, USA
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This posting is intended for informational or conversational purposes only.
Always seek the opinion of a licensed dental professional before acting on
the advice or opinion expressed here. Only a dentist who has examined you
in person can diagnose your problems and make decisions which will affect
your health.
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>> P
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> Perhaps. But these folks seldom have spacing back there prior to crowning
> the tooth. What accounts for that?
NOYB - 01 Aug 2005 21:39 GMT
> The dentist has changed the occlusal morphology of the tooth. You (or the
> treating DDS) added or removed a sloped surface. If the lower tooth
[quoted text clipped - 8 lines]
> distally. You need constant application of a distalizing force to achieve
> that. The act of making a crown does not create a *constant* force.
I must say that since I've been paying close attention to the force vectors
on the most distal crowns when I cement them, I get a lot less drifting than
I used to. Thanks for the heads up.
Susan (Schwarzkopf) Burkard - 03 Aug 2005 14:27 GMT
Wow I didn't think I'd create such a flurry regarding this issue! I
went yesterday for my checkup and they took out the stitches. They said
the pain should subside more now after removing the stitches. The
peridontist said he moved the gum up around the crowned tooth to prevent
the buildup of food and bacteria from happening again. I hope he's
right. It is still very difficult for me to chew on that side of my
mouth.
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>
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>
>
NOYB - 03 Aug 2005 15:59 GMT
>> The dentist has changed the occlusal morphology of the tooth. You (or
>> the treating DDS) added or removed a sloped surface. If the lower tooth
[quoted text clipped - 13 lines]
> vectors on the most distal crowns when I cement them, I get a lot less
> drifting than I used to. Thanks for the heads up.
Susan,
Unless there's a tight contact between the two teeth now (ie--floss "snaps"
when you insert it), you'll continue to have the problem. "Moving the gum
around" will only close what's called the embrasure space...which is a gap
below the contact point of the two teeth. Get a temporary crown with a
tight contact on there ASAP.