Dentaltown February 2023 - 18

MESSAGE BOARD 1
#8 Dark Root Stump Remedy
This Townie gets help matching the shade of a central incisor
ccay
Post: 1 of 24
12/16/2022
Hi, all-this is a patient I am seeing for crowning of #8. I sent this photo to the lab and had the lab fabricate a
zirconia crown with facial cut-back for porcelain. Unfortunately, it didn't work because the gray shadow showed
through the crown, so I will need to cut it off for a redo.
I have a few thoughts about what might work, just want to get some ideas from you all.
1. Looking at the photo, if the patient still wants to go for a
porcelain crown, does it help to do a nonvital bleaching first
before going for the zirconia cutback for buccal porcelain?
Will the color normally relapse? If it does, does it show
through the crown?
2.
If the patient refuses nonvital bleaching, is PFM a better
option?
I cemented the crown with GC FujiCem. Any tips for easier
removal of the zirc crown? Any specific burs? Cut a slot through
and pry the restoration open or prep away? The last thing I want
to do is to damage the tooth of a not-so-happy patient. Thanks a
bunch! n
Danishteeth
Post: 2 of 24
Had a case like this. The patient's face is on, so I won't upload. How we solved the issue:
1. More facial reduction than you have.
2. The patient went for a live shade test at the technician.
3. Panavia opaque cement.
At first, I didn't want to cement the crown because I still saw just a slight tint. Used " try-in paste. " Tint was completely
gone and the crown looked gorgeous and couldn't tell apart from her other teeth.
I tried internal bleaching at first; it did help some. (Mine was far darker than yours.) But I am pretty convinced
the opaque cement is what is needed, along with enough space for it to block out. That or use a slight buildup of the
facial while reprepping, using an opaque shade. n
12/16/2022
Rick Knecht
Post: 3 of 24
12/16/2022
I agree-a bit more reduction is needed.
One option is to use a more opaque material like metal, which will require a porcelain margin to optimize aesthetics.
But that also needs to be opaque to block the color and value.
Another option is zirconia with an opaque liner that can be put in the intaglio to block out the underlying value
and chroma (#7 is a katana coping with a liner over a yellow oxidized titanium abutment).
FEBRUARY 2023 | 18 | DENTALTOWN.COM
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Dentaltown February 2023

Table of Contents for the Digital Edition of Dentaltown February 2023

Dentaltown February 2023 - Intro
Dentaltown February 2023 - Cover1
Dentaltown February 2023 - Cover2
Dentaltown February 2023 - 1
Dentaltown February 2023 - 2
Dentaltown February 2023 - 3
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Dentaltown February 2023 - Cover3
Dentaltown February 2023 - Cover4
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