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cosmetic dentistry_ beauty & science

I 23 clinical technique _ SDR I cosmeticdentistry 4_2011 cement. Plumber’s tape was folded around the upper first premolar to act as an isolation medium during cementation. Fig. 27_The cavity preparation for bonding was done using XP BOND mixed with the Self-Cure Activator according to the manufacturer’s instruc- tions.ThetranslucentshadeofCalibraEstheticResin Cement(DENTSPLY)wasusedasalutingcementfor cementation of the prefabricated inlay. Fig. 28_Occlusal view after cementation of the porcelain inlay. Final light-curing of the cement was done from the occlusal and palatal direction for 30 seconds, respectively, using the VALO light- curing unit. Fig. 29_Immediate post-op view after removal of the rubber dam. The final restoration reflects optimalrestorationofaesthetics,occlusalanatomy, marginal ridges and interproximal integrity. _Conclusion Providingtheclinicianwithaflowablebasemate- rial for posterior direct and indirect restorations that canbeplacedandcuredinbulkmustbeoneofthemost excitingtechnologicaladvancementsindentistryto- wardstechniquesimplificationforwhataregeneral- lyregardedashighlytechnique-sensitiveprocedures. SDR exhibits excellent adaptation to the prep- arationwallsowingtoitsflowablenature,reducing the possibility of void formation on the margins, which could lead to post-operative sensitivity or aesthetic failure of the restoration. Another unique characteristic of the SDR material is the self-level- ling feature, which eliminates the need to mani- pulate or sculpt the material before curing. This also creates an ideal surface for the addition of any regularviscositycompositeresintocompletedirect restorations, providing the desired strength, aes- thetics and wear resistance for occlusal surfaces. The reduced polymerisation stress of the SDR base material on normal and compromised cusps afterconventionalcavitypreparationmightprovide the clinician with an improved and simplified oper- ative technique to offer patients more durable pos- terior restorations. _Acknowledgement I would like to acknowledge Mr Greg Flint for fabrication of the ceramic inlay._ Editorial note: Reprinted with permission, courtesy of International Dentistry South Africa ©2010. Int Dent S Afr, 12/5 (2010): 18–27. A complete list of references is availablefromthepublisher. Avideodemonstratingtheself-levellingpropertiesofSDR is available on id/6974orsimplyscantheQRcodewithyoursmartphone. Prof Peet van der Vyver is a part-time lecturer at the University of Pretoria’s School of Dentistry and in private practice in Sandton,Gauteng, SouthAfrica. cosmeticdentistry _about the author Fig. 29Fig. 28 Fig. 27Fig. 26