Bicon Dental Implants
Wednesday, August 27th 2008 7:06PM EDT

Bicon Integrated Abutment Crown™: Removal of a Broken Abutment Post of a Maxillary Lateral Incisor and Insertion
This case demonstrates the removal of a 2.0mm fractured abutment post from a badly positioned lateral incisor implant. It also demonstrates the insertion of a Bicon Integrated Abutment Crown™ with an excessive angulation of its post.
     


1. Radiograph revealing the fact that only two maxillary Bicon implant restorations are definitely in occlusion resulting in their being inappropriately loaded.


2. Pre-operative view.


3. View of initial incision.


4. View of fractured abutment remaining in implant.


5. Abutment post being removed with a #1557 carbide bur.


6. Removed post on tip of #4 round bur which was used to remove it from implant well.


7. Removed post alongside of the #1557 carbide bur which made a central bore in the post facilitating its removal. Note length of post is the same length as the cutting edge of the #1557 bur.


8. Guide pin trajectory revealing the excessive angulation necessitated by the badly positioned implant.


9. Fractured post aligned with failed porcelain fused to metal prosthesis.


10. Palatal view of porcelain fused to metal crown revealing a large wear facet.


11. Narrow one-piece acrylic sleeve on stealth shouldered abutment prior to the fabrication of a temporary crown.


12. Temporary crown snapped onto the abutment which is seated only with finger pressure in the implant well.


13. Implant sulcus two weeks after post removal.


14. Black 2.0mm impression post being inserted into implant well.


15. Black impression post seated in implant well.


16. Impression material being injected around black impression post.


17. Soft tissue moulage injected around immpression post and minimally around implant analog in full arch impression.


18. Stone model incorporating implant analog being poured in dental stone.


19. Trajectory of guide pin in implant analog of stone model reveals how badly positioned the implant is.


20. Digital photograph being taken of shade guide against a black background.


21. Integrated abutment crown on model with pink incisal seating jig which will facilitate the intra-oral orientation of the Bicon Integrated Abutment Crown™.


22. Mirror view of Bicon Integrated Abutment Crown™ revealing angulation of post relative to the incisal edge.


23. Divot being created to facilitate seating force in the long axis of abutment post.


24. View of sulcus prior to seating Bicon Integrated Abutment Crown™.


25. Bicon Integrated Abutment Crown™ being inserted.


26. Seating instrument being inserted into divot.


27. Seating force being applied in long axis (green) of abutment post. If the tapping force were applied to the incisal edge (red), seating would not occur.


28. Surface of divot being cleaned with 95% ethyl alcohol.


29. Ceramo coupler being applied to divot.


30. Modeling liquid being applied to divot.


31. Polyceramic material being applied to divot.


32. After being light cured the excess material is being removed with HF-TI-Nitrite coated carbide bur.


33. Initial polishing with a soft white silicone knife-edge wheel.


34. Polishing with a soft silicone mounted polishing wheel.


35. Continued polishing with a nylon bristle brush wheel.


36. Polishing with a soft bristle brush and polishing compound.


37. Polishing with a soft white clothe wheel.


38. Labial View pf Integrated Abutment Crown™ after being permanently seated.


39. Incisal contact being checked with articulating paper.
Top of Page