PMC9507783_01
Initial situation of the maxilla: teeth 16-14 insufficient composite restorations; tooth 16 endodontically treated.
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The other vital teeth showed insufficient restoration margins and carious lesions (Figures 2 and 3).
Initial situation in the mandible: teeth 44-47 insufficient composite restorations; tooth 45, 46 endodontically treated; lateral view: open edge-to-edge bite in the region of teeth 16, 46 and a cross bite in the region of teeth 15, 45.
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The other vital teeth showed insufficient restoration margins and carious lesions (Figures 2 and 3).
Cavity preparations and bases in the mandible.
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Following the removal of the existing composites from teeth 44-47 and caries excavation, cavity bases were placed to cover the root canal fillings and cavity floors (Clearfil DC core plus, Dentin, Kuraray Noritake Dental Inc., Tokyo, Japan) (Figure 4).
Digital design for teeth 44, 45, 46, and 47; CEREC SW 5.1.3.
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Various tools can be used to easily customize this design (Figures 5 and 6).
Restorations designed for teeth 47, 46, 45, and 44, ready for grinding.
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Various tools can be used to easily customize this design (Figures 5 and 6).
(a) Technical workflow: grinding restorations with MC X5; (b) & (c) handling preparations (d)-(f) staining and glazing restorations.
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After grinding in the CEREC MC X5 production unit, the retention pin of the crown was removed, and the connecting area was finished with a fine-grid diamond instrument (Figure 7).
Finalization of the restorations 47, 46, 45, and 44 on a printed model.
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The restorations were checked for accuracy of fit and occlusal contacts on a printed model (SolFlex, W2P, Vienna, Austria) and adjusted where necessary (Figure 8).
Final restorations of the teeth 47, 46, 45, and 44.
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The restorations were placed on a firing tray with a firing pad (DeguDent, Hanau-Wolfgang, Germany) and fired at 760 C (Figure 9). Finally, the restoration was high-shine polished with a diamond polishing paste (Fegupol 8059, Feguramed, Buchen, Germany) (Figure 9.
PMC9507783_02
Restorations placed on teeth 44, 45, 46, and 47.
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The restoration proved to be a good color match with the adjacent teeth (Figure 10).
Cavity preparations and bases in the maxilla.
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After placing the mandibular restorations, the maxillary teeth (16-14) were prepared, and a digital impression was taken, in the same appointment (Figures 11 and 12).
Digital design for teeth 16, 15, and 14; CEREC SW 5.1.3.
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After placing the mandibular restorations, the maxillary teeth (16-14) were prepared, and a digital impression was taken, in the same appointment (Figures 11 and 12).
Restorations designed for teeth16, 15, and 14, ready for grinding.
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The restorations were produced as described above (Figures 13, 14, and 15) and placed in another appointment (Figure 16).
Finalization of the restorations 16, 15 and 14 on a printed model.
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The restorations were produced as described above (Figures 13, 14, and 15) and placed in another appointment (Figure 16).
Final restorations for teeth 16, 15 and 14.
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The restorations were produced as described above (Figures 13, 14, and 15) and placed in another appointment (Figure 16).