> > My dentist seems rushed and rough. What can go wrong with a crown,the usual
> > things?
[quoted text clipped - 8 lines]
> standpoint, a dentist who can't cut a crown in 15 minutes really needs
> to work on his/her speed.
> I respectfully disagree.
>
> There are too many factors which influence the preparation of a tooth
> for a crown. Accessibility and angulation factors may increase the
> difficulty and the time for a crown prep.
That's true, too. But they become less of an issue as you become more
experienced. Really, how many times must you keep drilling to get a 1
mm shoulder/bevel?
And believe me, no one enjoys going to the dentist, let alone having
to open their mouth for long time.
Also, I have to consider the
> possibility today that many of the teeth being prepared for crowns may
> not even need a crown -- it's easier and faster to make an ideal prep
> on an ideal tooth -- but if the tooth is ideal, why is a crown being
> made?
Most dentists prep for crowns when there's an MOD decay, a coronal
fracture, and/or a large old filling that is marginally failing. Of
course, you can still do the tradtional composite restoration on them
but haven't we all learned of how large fillings will break or fail? I
don't want to put up with tightwad patients who talk of how it was ME
who put in the filling that broke. You also can't reproduce the
original tooth anatomy anyway.
> In many cases also, existing restorations may require complete removal
> and careful buildup of a tooth for crown prep. That takes additional
> time and effort.
When I come across those, and if they have a pre-existing deep
filling, I also suggest to the patient a prophylactic root canal.
Will it cost a bit more to the patient? Yes but I'd rather charge the
patient more and get the job nailed completely rather than risk a
nasty phone call in the future explaining to me how the crown is
starting to hurt like hell and that I am responsible for it.
It's not like the past. People are no longer as naive and you have to
protect yourself. Saving tooth enamel doesn't bear much meaning to the
average patient. They only know what looks good, how good it feels,
and if it'll last.
> I have received many phone calls over the years from patients whom I
> have never seen before, asking if they can come in to "put a crown
[quoted text clipped - 6 lines]
> wonder how much of a factor the "speed" was in the dentist's
> priorities for that patient.
Actually, I sometimes end up over-prepping and result in a teepee
crown prep because I was spending too much time on one tooth. And,
even with the best of intentions, it's not uncommon to accidentally
overreduce for occlusal clearance when trying to drill just a tiny bit
for that perfect 1.5 -2.0 mm space.
For anything you do, I won't argue that rushing through a procedure is
likely to create mistakes. But I wouldn't establish causation between
time spent and a poorly done crown. There's not enough evidence.
Amatus Cremona - 20 Nov 2008 01:46 GMT
Machine milled onlays

Signature
/
Amatus
/
On Nov 19, 2:49 pm, Bill <dental...@hotmail.com> wrote:
> I respectfully disagree.
>
> There are too many factors which influence the preparation of a tooth
> for a crown. Accessibility and angulation factors may increase the
> difficulty and the time for a crown prep.
That's true, too. But they become less of an issue as you become more
experienced. Really, how many times must you keep drilling to get a 1
mm shoulder/bevel?
And believe me, no one enjoys going to the dentist, let alone having
to open their mouth for long time.
Also, I have to consider the
> possibility today that many of the teeth being prepared for crowns may
> not even need a crown -- it's easier and faster to make an ideal prep
> on an ideal tooth -- but if the tooth is ideal, why is a crown being
> made?
Most dentists prep for crowns when there's an MOD decay, a coronal
fracture, and/or a large old filling that is marginally failing. Of
course, you can still do the tradtional composite restoration on them
but haven't we all learned of how large fillings will break or fail? I
don't want to put up with tightwad patients who talk of how it was ME
who put in the filling that broke. You also can't reproduce the
original tooth anatomy anyway.
> In many cases also, existing restorations may require complete removal
> and careful buildup of a tooth for crown prep. That takes additional
> time and effort.
When I come across those, and if they have a pre-existing deep
filling, I also suggest to the patient a prophylactic root canal.
Will it cost a bit more to the patient? Yes but I'd rather charge the
patient more and get the job nailed completely rather than risk a
nasty phone call in the future explaining to me how the crown is
starting to hurt like hell and that I am responsible for it.
It's not like the past. People are no longer as naive and you have to
protect yourself. Saving tooth enamel doesn't bear much meaning to the
average patient. They only know what looks good, how good it feels,
and if it'll last.
> I have received many phone calls over the years from patients whom I
> have never seen before, asking if they can come in to "put a crown
[quoted text clipped - 6 lines]
> wonder how much of a factor the "speed" was in the dentist's
> priorities for that patient.
Actually, I sometimes end up over-prepping and result in a teepee
crown prep because I was spending too much time on one tooth. And,
even with the best of intentions, it's not uncommon to accidentally
overreduce for occlusal clearance when trying to drill just a tiny bit
for that perfect 1.5 -2.0 mm space.
For anything you do, I won't argue that rushing through a procedure is
likely to create mistakes. But I wouldn't establish causation between
time spent and a poorly done crown. There's not enough evidence.