Page 66 - CEREC Q4|2012

62 | cerecdoctors.com | quarter 2 | 2013
in this recurring section of cerecdoctors.commagazine, we share a sample of conversations occurring online:
In this discussion thread, cerecdoctors.commembers discuss how to achieve ideal fit with the CEREC.
Open Margin a Product of
Prep Flaws? Please Advise …
d i s c u s s i o n f o r u m | | |
Compiled fromwww.cerecdoctors.com/discussion-boards/view/id/18130
Kevin Potts | Dallas
A theme that seems to be recurring often enough
that I wanted to see what sort of advice or down-
right jackslapping you guys may have for me: What are the
problem areas that are either making these crowns not seat
100% or are causing the margins to be open or short?
Thanks for any advice.
Kent Mosby | Coeur d’Alene, Idaho
I think that this is a margin-
ation issue (Figs. 1 and 2).
This is from the underside
of the prep. Themargin does
not reach the edge of the
prep (Fig. 3).
This shows the adhesive
gap not at the edge of the
margin from the underside
(Fig. 4).
I only use the manual
margin finder and if I am
unsure I will look from
below. I hope this helps.
Kevin Potts
Mark – My contacts usually have some spots of
green on them, but mostly a light blue. I check
them each time since it seems to vary so often ... which I
wonder if it’s related to axis of insertion sometimes.
On this case, I did have to do some manual adjusting to
get the crown to seat, but at the time of the photo I was
happy with the interproximal tightness.
Mark Fleming (Faculty & Magazine Editor)
Scottsdale, Ariz.
What camera? Adhesive gap setting? Margin
thickness setting?
Kevin Potts
Omnicam
Adhesive gap: 120 (I am assuming spacer)
Milling offset: -175
Prox str: 0
Min thickness rad: 600
Min thickness Occ: 600
Margin thickness: 100
Mark Fleming (Faculty & Magazine Editor)
Yes, I meant spacer. Are your interproximal
contacts tight? What color on proposal?
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