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Post Lava Crown: Black Line Still Present?

asked 1 year ago by Seekingforhelp in India
Latest answer by J. Willis Baker, DDS
Question viewed 809 times
Tags: black, dark, molars, replacement, spaces

I got three old PMF crowns (molars) replaced with three Lava crowns just recently. I am wondering why there is still some kind of darkness in between the three crowns and a black line on the back of the crowns (just where the visible black line of the PMF´s from the metal used to be).

These new ones are real Lava crowns and metal free so I thought there should no black line be visible even on the back of the tooth. Also why are the spaces in between these three teeth a little darker?

9 answers to Post Lava Crown: Black Line Still Present?

+2

Lava Crowns, black lines, old porcelain fused to metal crowns, implants, incision-less implants, flapless implant surgery

The roots of your teeth are still dark from having old metal crowns on those teeth for a while. Two solutions: both require re-doing the crowns. 1. Drill out a trough in the dark roots and fill with opaque resin, boding. This is called the "Dickerson Ditch" name by Bill Dickerson DDS from Nevada. 2. Make the crowns subgingival; ending under the gumline. Dr. Josephs
Mitchell A. Josephs, DDS

Palm Beach Cosmetic Dentist
+1

Porcelain crowns, discoloration

The new material from lava is supposed to be free of any dark underlying material so my guess it is probably 1 of 2 things 1. leakage of bacterial from the crown margin and the tooth below. was there any darkness when first inserted? if not then this is probably the problem, solution is to replace crown 2. the second option is that the root of the tooth is dark and discolored from previous root canal therapy. this is much harder to fix and either a connective tissue graft to thicken... more
J. Willis Baker, DDS

Wichita Cosmetic Dentist
+1

Should I have Dark Lines around my Lava Crowns?

In general, the answer is that  Lava (a type of 3M Zirconia, all-ceramic porcelain crown) creates a beautiful invisible crown.  In general, there is usually a nice improvement over the darkness of a PFM (porcelain fused to metal dental crown). The dark spaces in between your teeth are likely minor gum changes that will improve by itself in a few weeks. Your dark lines could be temporary or permanent. They could be temporary and caused by: The gum being pushed down... more
Scott Greenhalgh, DDS

Denver Cosmetic Dentist

www.scottgreenhalghdds.com

+1

Lava Crown

Just as Lance said, this is probably because of visably being able to see the tooth strucrture. If there is recession present after the prep, many times the gum will cover the area after a period of time. A photo would be great to be able to tell better.
Phillip Kemp, DDS

Brentwood Cosmetic Dentist
+1

Black lines on dental crowns can happen for many reasons

Sometimes the tooth structure itself is dark and can show.  If there is any gum recession, this will appear, however sometimes it shows immediately after the crown is placed and the gums return to normal and hide the black line. It is possible that some fluid was trapped during cementation and has stained.  Unfortunately, this won't go away. As far as the other discolorations, without a photo I can't guess...
Lance Timmerman, DMD

Seattle Cosmetic Dentist
+1

Darkness around Lava Crowns

Drs. Spector and Timmerman make valid points about your concerns. The darkness between the teeth may be the result of recession of the gum - which will rebound over the next 3 -6 months if the contour of the tooth in relation to the bone height is correct (5mm from bone to contact area). It may also be a change in shape of the new crowns relative to the old crowns. The old crowns may have been too bulky and new ones properly contoured. Patients often a very concerned about the spaces (called... more
Mickey Bernstein, DDS

Memphis Cosmetic Dentist
+1

Darkness Can Be Reflected in New Dental Work

Metal free crowns can still show the darkness of the tooth structure underneath.    The darkness can reflect the color of an old root canal treatment, it can be from recession, it can even be an illusion.  The key is where are your new crowns? If your front teeth are involved, the darkness can be an issue.  An interesting treatment I have done for perfect crowns that show a color difference is to have a periodontist do gum grafts to thicken the tissue... more
Wendy S. Spektor, DDS

Bellevue Cosmetic Dentist
+1

Darkness above Lava crown

Successful dental treatment  is a result of the teamwork. This team consists of patient, restorative doctor and the team of specialist that he or she works with, and laboratory. If any of team members did not performed well, there is a high probability that the final result might not be satisfactory. The fact that you have received Lava crown doesn't mean that you will have an excellent aesthetic result. It is just a dental material. The most important is how experienced... more
Zina Kaleinikova, DDS, MS

Cleveland Cosmetic Dentist
+1

Lava Crown with a Black Line

Without more information it is difficult to say for sure what is causing the black line on your Lava crowns.  One thing that comes to mind is that the Lava Crown is often considered in the category of Porcelain crowns.  There are many materials that a dentist can select from when doing a Porcelain crown.  Lava crowns consist of Zirconium, which is actually a  white metal.  This is important because metal does not allow light to shine through the crown  to... more
Randy Bryson, DMD

Las Vegas Cosmetic Dentist

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