PMC4055644_01
(a) Intraoral occlusal view of edentulous area before treatment. (b) Intraoral lateral view of tooth gap; the interabutment distance measured was 11 mm.
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fig1
Standardized inlay preparations; previous composite fillings were removed.
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fig2
The minimum axial reduction (shoulder with rounded internal angle) was set at 1.5 mm and the convergence preparation angle was added up to approximately 6 degrees (Figure 2).
(a) Occlusal view of the final elastomeric impression. (b) Close-up of silicon impression; light body material reproduced every preparation fine details.
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fig3
The impression was made using a VPS material with a one-step technique (Elite HD + putty soft, Elite HD + regular body, and Elite HD + light body, Zhermack SpA, Badia Polesine, Italy) (Figures 3(a) and 3(b)).
(a) Type IV gypsum master cast with the composite resin try-in of the IRFDP. (b) Close-up of the mock-up; the occlusal contacts were verified by the technician using the articulator.
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fig4
Complete indirect resin photo polymerization was obtained using a laboratory curing unit (3M ESPE Alfa Light Unit) (Figures 4(a) and 4(b)).
Occlusal view of the try-in seated in the oral cavity.
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fig5
(a) Interarch relationships were highlighted with a 40 mu occlusal paper. (b) Details of the contacts area; excessive occlusal pressure at the margins of the restoration will be corrected in the laboratory.
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fig6
(a) Monolithic zirconia restoration on master cast: occlusal view. (b) Lateral close-up; brown stains were used in the cervical area.
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fig7
IRFDP conditioned for final adhesive cementation.
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fig8
Al2O3 particles (50 mum, 2.8 bar, 1 cm), rinsed with water spray for 60s, and ultrasonically cleaned in 95% ethyl alcohol for 10 minutes. A MDP containing primer (Clearfil Ceramic Primer, Kuraray, Japan) was applied to the zirconia surface as recommended by the manufacturer (Figure 8).
(a) Operative field isolation with dental dam. (b) Selective phosphoric acid etching. (c) Etched enamel and dentin surfaces. (d) A resin composite dual-curing cement was used.
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fig9
The placement of IRFDP after adhesive procedures is resumed in Figures 9(a) to 9(d).