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| Figure 5. Preoperative facial view of existing ceramo-metal restorations with open margins, recurrent caries, and inadequate epithelial attachment. Patient presents with sensitivity and requests an aesthetic improvement. Treatment required connective tissue grafting and replacement of the existing crowns with zirconium restorations and a Class V composite restoration on the second premolar. |
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| Figure 6. The internal surface of the high strength ceramic crown (Lava [3M ESPE]) was microetched using a silica coating, CoJet-Sand (Rocatec/CoJet System [3M ESPE]) (6a). A silane coupling agent (ESPE Sil) was applied onto the internal surface of the restoration (6b). Application of a methacrylate based self-etch cement (G-Cem [GC America]) onto the internal aspects of the porcelain crown for final cementation (6c). |
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| Figure 7. Postoperative facial view of the final restorations. Notice the soft tissue biocompatibility at the restorative interface. | Figure 8. Patient presents with a fractured all-ceramic crown on the maxillary right first molar after endodontic treatment. Treatment involved replacement of existing crown with all-ceramic restoration fabricated with a zirconium internal substructure and Vita surface ceramics (VITA VM9 [Vident]). |