Minimally invasive removal of a periodontally compromised implant

허영구 원장님 Dr. Heo

Author
Dr. YoungKu Heo, DDS, MDS, PhD

Director of Global Academy of Osseointegration
Seoul, Korea



- #35: Bone loss of 3mm
- #36: Floating with no bone development & gingival inflammation
- #37: Bone loss of 5mm
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Failed implants #36 and #37 were easily removed with a crown remover.

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The buccal view following removal of #36 and #37.

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A fixture remover screw was screwed into the implant fixture #35 with 70Ncm of wrench torque (less than 80Ncm is recommended).

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A fixture remover screw must be inserted to the yellow line marked on a 3D image to prevent them from getting fractured. Bottom threads are in the opposite direction to upper threads.

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A fixture remover that fits to the coronal part of the implant was screwed on the removal screw in counterclockwise direction. 300Ncm counter-torque was applied with copious water, but failed to unthread the implant.

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With 1mm of crestal bone prep, the implant started to come out at 200Ncm counter-torque.

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As the favorable bony conditions of threads are preserved, implant may be inserted again with good prognosis.

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The surgical site was simply sutured.

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Postoperative radiographic view.

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The surgical site following a month of tissue healing.

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Click on the image to see clinical video.

Implants indicated to be removed can be inserted again, once bony conditions are favorably preserved. The step-by-step procedures of minimally invasive implant removal techniques are presented in this case. 

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