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Bone Between Implants Exposed and Resorbed: Why and Course of Action?

Last Updated: Jan 01, 2010

Dr. T asks:
I have been placing nobel and zimmer implants for the past 6 years with great success and few problems. Last week I placed 2 implants on the lower left. Great placement. Everything was great, until the patient came in today for suture removal. The bone between the two implants was exposed and had resorbed. It seemed that the lingual tissue had just “melted “away. Patient had pain. I encouraged bleeding from the bone and the soft tissue. Placed a membrane as well as gelfoam. Sutured the area again. I hope for the best, but the suture was very difficult due to lack of lingual tissue. What are the next steps I should take here? What could have caused such massive and rapid resorption of the bone in the first place?

5 Comments on Bone Between Implants Exposed and Resorbed: Why and Course of Action?

DRMA

02/22/2010

Does the patient not take Bisphosphonates?

Greg Steiner

02/22/2010

Any exposed bone is dead bone. Bone death can occur from elevated temperature which is unlikely here or compromised blood supply. Provided bisphosphonates are not involved what is happening now is that osteoclasts are forming under the exposed bone at the junction between dead bone and vital bone and will cut the dead bone free and the necrotic bone will eventually work its way out-takes about a month. As a mineralized tissue it cannot melt away but if a portion of the crest was fractured during the surgery it could have been lost and that could explain why bone is missing. I think it looks worse than it really is and after healing you should have an acceptable result provided bisphosphonates are not involved. Keep us posted.

Bruce G. Knecht

02/23/2010

My first question would be the pt.'s medical history. The second question was did you split the bone. If you did did you use a Piezo. Third it could be tht the osteotomy burs were dull and it over heated the bone. I would warn the pt that if the result is not ideal int he next few weeks that you remove them and let the bone heal and go back in a few months. It is better than babysitting a future failure and loosing the patient.

ssargent

02/23/2010

Dr T, The implant knowledge base you are accessing here is tremendous. However, the most accurate help will come when a full disclosure of the salient attributes of your situation are given. As stated already, what is the medical history of the patient? Any of the history have implant pertinent facts, or none? What is the implant placement situation? How many millimeters between the implants? Is the patient a big guy that will chomp everything he shouldn't right on the surgical sight or a little gentle lady with total compliance? Did you protect the surgical sight with Barricaid or something? How deep is the defect? Every viable bit will help. Could you update your information provided? Given enough succinct information, I have no doubts that the implant docs on this site can pretty much tell you exactly what happened instead of trying to make an educated guess.

dr purvesh

02/24/2010

i had same prob , but wiht natural teeth ,, i had rct in lowe 6 and had crown prep, and seen that their is exposed bone in interdental space of 6 and 7 ,,i took suture of buccal and lingual soft tissue ,,and keep it for 2 week ,,and after few days i got soft tissue over it ,,i think to grow new soft tissue on ur expose bone surface wil take time ,,its very slow process.. best luck

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