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cosmetic dentistry_ beauty & science

I 21 clinical technique _ SDR I cosmeticdentistry 4_2011 distal proximal box preparations. After a 4 mm in- crement had been dispensed, the material was left undisturbed for a few seconds to self-level before itwaslight-curedfor40secondsfromtheocclusal aspect. Fig. 13_Another 4 mm increment of SDR was dispensed on top of the previous layer up to ap- proximately 3 mm from the cavo-surface margin. The material was again left undisturbed to allow for self-levelling before it was light-cured for 40 seconds. Fig. 14_The remaining part of the cavity prep- aration was filled with Tetric N-Ceram (Ivoclar Vivadent), a regular viscosity composite resin. Fig. 15_The Class II cavity was transformed into a Class I cavity according to the Bichacho technique:14 mesial and distal marginal ridges were built up with a regular viscosity composite resin, one at a time and light-cured. Fig. 16_Successive increments of composite were applied in an oblique layering technique, sculpted with a pointed composite instrument and light-cured for 40 seconds. The inclination of the remaining cavo-surface slopes was used as indication to reconstitute the occlusal mor- phology. Fig. 17_Completed restoration after finishing and polishing with an egg-shaped, 30-fluted car- bide finishing bur (Endenta) and sequential finish- ing with OptiDiscs (Kerr). Fig. 18_Angulated view of the buccal cusp, demonstrating no signs of enamel cracking that could have been caused by polymerisation shrink- age of the bulk fill flowable SDR base material. Fig. 19_Immediate post-op occlusal view after polishing with diamond polishing paste (ULTRA- DENT Diamond Polish), illustrating the optimal aesthetics, improved interproximal contour and the shape of the composite restoration. Note the optical integration of the composite resin and SDR with the surrounding tooth structure. Fig. 15Fig. 14 Fig. 19Fig. 18 Fig. 17Fig. 16