Crown Replacement
A 48 year old patient contacted us with a wish for aesthetic correction of a more than 20 years old crown on tooth 15
According to the RVG, the crown leaks and the root canal filling is not apically ideal.
At this point, it is a good idea to ask the patient about teeth whitening.
The patient did not desire a lighter color, so we started by removing the unsatisfactory metal-ceramic crown.
Massive horizontal preparation in combination with inaccurate crown fabrication caused circular caries.
It's positive that mostly when changing preparation to vertical, the decay is simply removed by preparation without the need to restore the tooth around the perimeter where we plan to finish the margin of the new crown.
The tooth surface is then smoothed with a 30 µm Eva system. Note intrasulcular bleeding due to the intentional “gingitage” procedure. The blood clot formation will initiate the gingiva tissue biologic response, guided by the crowns profile.
Introducing Teflon tape to define the new location of the provisional crown.
Unfortunately, the distal caries extended into the root canal filling, so it will be necessary to make RCRT
First provisional crown.
After two weeks the gingiva is nicely healed.
It is necessary to realize that the dark brown colored root will always shine through a little in the area of marginal and attached gingiva.
Final impression.
Great ability to model Teflon horizontally and vertically gives us the ability to end the margin of the crown exactly where we want it.
In this case, the dental technician was given information to emphasize the Emergency profile and to slightly recontour the margin so that the marginal gingiva would be slightly anemized during placement.
With proper pressure on the marginal gingiva, the anaemia disappears within a few seconds/tens of seconds.
Check-up after 1 year.