cosmetic dentistry - beauty & science

I 17 special topic _ veneers I cosmeticdentistry 2_2012 Porcelain stratification was ini- tiated by placing a layer of deep dentine on the facial, interproxi- mal and incisal areas. For the sub- sequent layering steps, the resin matrix from the wax-up served as a guide. The veneers were then builtupusingdentinelayersofdif- ferent values and translucencies with the appropriate dentine ma- terials and manual skills (Figs. 5 & 6). Finally, the dental lobes were characterised by applying thin layers of custom-mixed ivory- and cream-coloured intensive ma- terials (Fig. 7). A combination of translucent and opalescent enamel powders was used to cover the entire facial aspect of the veneers (Fig. 8). After the initial bake, the veneers were checked on the master dies. The contours and shape were finalised and the veneers were baked for a second time (Fig. 9). Final contouring and surface texturing were completed with diamond burs and green stones (Fig. 10). After the final polish, the internal as- pects of the veneers were etched with 9.5 % hy- drofluoric acid for 60 seconds. The thin veneers were then ready for seating and delivered to the dentist (Fig. 11). _Final seating Once the provisionals had been removed, it was important to polish the preparations with pumice and to thoroughly clean them subse- quently. The veneers were tried in individually to in- spect the fit and then collectively to evaluate the contact areas optimally. The veneers were placed using a try-in gel in order to give the pa- tient a preview of the final outcome. The result was outstanding, and thus the veneers were definitively luted into place according to stan- dard bonding protocol with a resin cement. Af- ter final polishing, the occlusion was adjusted and checked. The patient’s expectations had been met: the restorations closed the diastema, the newly designed anterior teeth fulfilled the aesthetic expectations of the patient, and her smile was more relaxed and she looked more confident (Figs. 12 & 13). _Conclusion Bonded veneers can represent a minimally invasive treatment option. If the appearance of the anterior teeth is to be improved or modified, they are an attractive alternative to orthodontic treatment. The IPS d.SIGN fluorapatite material features properties that come very close to the optical and physical characteristics, as well as the wear resistance of natural teeth. With this material, veneers can be fabricated that are virtually in- distinguishable from natural dentition. The procedure discussed in this case allowed a conservative and highly aesthetic veneer restoration to be fabricated. Both the patient’s aesthetic goals and the dentist’s functional re- quirements were met (Fig. 14)._ Fig. 14_Two years after treatment: the gingiva is healthy and the patient still happy. Harald Heindl,MDT Aesthetic Dental Creations Mill Creek,WA 98012 USA aedecr@comcast.net Dr Stephen Phelan 1500 HeritageWay Oakville,ON L6M 4M7 Canada dr.sphelan@cogeco.ca _contact cosmeticdentistry Fig. 14