Fig.1
This clinical case presents Julia, 65 years old, that came to improve the aesthetics of her smile.

Fig.2
Pre-operative view of the from region, showing old composites and several caries to be removed.

Fig.3
After cavity preparation and rubber dam isolation, the etching step on tooth 1.3, consisting on selective enamel etching using 3M ESPE™ Scotchbond™ Universal Etchant for 20 seconds.

Fig.4
Bonding step: application of 2 layers of 3M™ Scotchbond™ Universal Adhesive to ensure a great interdigitation into the etched enamel and an ideal penetration into the dentinal substrate, which is also increased using a gentle blow air before light-curing.

Fig.5
Using one mass of Filtek Universal Restorative (3M, ESPE) composite it was possible to perfectly follow the cervical margin anatomy.

Fig.6
Post-operative result prior to finishing and polishing procedures.

Fig.7
After the old mesial class III composite of 1.2 was removed and the etching step consisted always on the selective enamel etching using 3M ESPE™ Scotchbond™ Universal Etchant for 20/30 seconds.

Fig.8
Bonding of the surface with the application of 2 layers of 3M™ Scotchbond™ Universal Adhesive.

Fig.9
Final result prior to finishing and polishing.

Fig.10
Contouring, finishing and polishing are critical, important steps. The Sof-LexTM Diamond Polishing System (3M, ESPE) can offer to the clinician the best solution for a simple and also satisfactory finishing and polishing technique. The beige Spiral Wheel offers the best solution for the first step of the finishing procedure.

Fig.11
Then, pink Spiral Wheel was used to obtain an adequate and appreciable polished surface.

Fig.12
Post-operative view of the polished teeth.

Fig.13
Palatal view of 1.3 after caries removal and cavity preparation.

Fig.14
Buccal view.

Fig.15
After cavity preparation, the etching step on tooth 2.3, consisting on selective enamel etching using 3M ESPE™ Scotchbond™ Universal Etchant for 20 seconds.

Fig.16
Application of 2 layers of 3M™ Scotchbond™ Universal Adhesive, which is a crucial step to obtain a strong and durable adhesion between dental hard tissues and composites.

Fig.17
Application of one mass of Filtek Universal Restorative composite; the restoration of cervical margin was performed.

Fig.18
Final result before the finishing and polishing procedures.

Fig.19
Selective enamel etching using 3M ESPE™ Scotchbond™ Universal Etchant for 20 seconds.

Fig.20
Application of 2 layers of 3M™ Scotchbond™ Universal Adhesive.

Wetting well all the surface and drying gently ensure the best interdigitation into the etched enamel and an ideal penetration into dentinal substrate.

Fig.21
Application of one mass of Filtek Universal Restorative composite following the cervical margin anatomy.

Fig.22
Post-operative view after the composite modeling, before the polishing procedure.

Fig.23
Intra-operative views of each step during 1.1 restoration. The etching Step (A); the typical surface aspect after etching (B); the bonding step (C), and the composite application (D) to realize the restoration.

Fig.24
Final result before the rubber dam removal and finishing and polishing procedures.

Fig.25
Post-operative final result right after the rubber dam removal.

Fig.26
Post-operative view at one week of follow-up.

Conclusions

Using a single layer approach, a proper tooth-restoration matching and an easy but effective modeling and shaping have been achieved. With the natural match and chameleon-like properties, Filtek Universal Restorative (3M, ESPE) creates adequate restorations with less shades. Modeling, finishing and polishing the composite material with the right instruments is crucial to realize the right restoration. A simple system like The Sof-Lex™ Diamond Polishing System (3M, ESPE) gives a good solution to realize a smooth and glossy restoration.

Bibliography

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2. Benetti AR, Havndrup-Pedersen C, Honoré D, Pedersen MK, Pallesen U. Bulk- fill resin composites: polymerization contraction, depth of cure, and gap formation. Oper Dent. 2015 Apr;40(2):190–200.

3. Fronza BM, Rueggeberg FA, Braga RR, Mogilevych B, Soares LES, Martin AA, et al. Monomer conversion, microhardness, internal marginal adaptation, and shrinkage stress of bulk-fill resin composites. Dent Mater. 2015 Dec; 31(12):1542–51.