Bicon Dental Implants
Friday, November 21st 2008 3:59PM EDT

All-Ceramic Crown: Maxillary First Molar
This case demonstrates the use of a one-piece acrylic sleeve for making an impression transfer and the use of an aluminum oxide sleeve for the fabrication of an all-ceramic crown.
     


1. A 5.0mm x 2.0mm stealth shouldered abutment at time of transfer impression.


2. Short one-piece acrylic sleeve being modified to accommodate minimal space distal to the abutment.


3. One-piece acrylic sleeve snapped onto shouldered abutment.


4. Transfer impression being made.


5. One-piece sleeve picked up in impression.


6. 5.0mm abutment transfer die being inserted into one-piece acrylic sleeve.


7. Soft-tissue model material being injected around transfer die.


8. Impression prior to stone model being poured.


9. Bicon aluminum oxide sleeve on transfer die in stone model.


10. Aluminum oxide sleeve being held in an abutment prep holder as it is being adjusted by the rotating diamond wheel of a model trimmer.


11. All-ceramic crown on model.


12. Mirror view of all-ceramic crown revealing internal aspect of aluminum oxide sleeve on which alpha porcelain was directly added in the fabrication of the crown.


13. Emergence cuff being used by technician as a corrective coping to indicate the degree to which the abutment must be intra-orally adjusted prior to the insertion of the all-ceramic.


14. Corrective coping snapped onto abutment indicating degree of reduction necessary prior to insertion of crown.


15. Abutment after being reduced to level of emergence cuff (corrective coping).


16. Interproximal contact being checked with articulating paper.


17. Radiograph reveals need for adjustment of distal contact area to achieve complete seating on the 5.0mm X 2.0mm stealth shouldered abutment.


18. Occlusal view.


19. Mesio-buccal view of cemented all-ceramic crown.
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