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ePaper created 2018-03-14, 11:21:34 | version 1.38.0
| industry Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 10: A 27-year-old male presented with pitted and stained incisors. Fig. 11: Composite from a new two-component general purpose and enamel system. Fig. 12: Preparation of the affected areas of the facial surfaces of both central incisors and the left lateral incisor. Fig. 13: The right central incisor was built up first using the general purpose shade A3 composite. Fig. 14: Enamel shade ET composite was used. Fig. 15: Restoration was shaped, finished and polished. fort during preparation. The lowest energy to accomplish the preparation is best and is controlled by the pulsing fre- quency and the power setting. The laser handpiece does not touch the tooth during preparation. The optimal dis- tance from the tooth is best determined by listening for the pulses to be the loudest. The handpiece is constantly moved and the resulting tooth shaping is observed (Fig. 9). Preparation parallel to the tooth surface is best. Though actual preparation time may be longer than with a tradi- tional high-speed handpiece, the time saved by not wait- ing for anaesthesia often allows small restorations to be placed at recare appointments rather than having to re- appoint. Lasers are suitable for use in most direct restor- ative preparations but are best suited in Class I, III, and V restorations. Pitted incisors Several companies produce composites designed to be used in a dual-layering technique. Some use a high chroma dark dentine and translucent enamel; others use an opaquer general purpose layer which is layered with a translucent enamel. One material which uses the later approach is Mosaic (Ultradent). pare the affected areas of the facial surfaces of both cen- tral incisors and the left lateral incisor (Fig. 12). The left incisors were restored using two layers. The surface was shaped using a very fine flame shaped dia- mond (NeoDiamond 3512.10, Microcopy), a finishing car- bide (NeoCarbide ET9, Microcopy), a finisher (Enhance, DENTSPLY Caulk) and two polishers (DiaComp Feather Lite Medium and Fine Composite Polishers, Brasseler). The right central incisor was built up first using the general purpose shade A3 composite (Mosaic, Ultra- dent; Fig. 13) and then the enamel shade ET composite ( Mosaic, Ultradent; Fig. 14). The restoration was shaped, finished and polished in a similar manner (Fig. 15). Class V abfraction lesions Sometimes different composites from different manu- facturers can be layered to best achieve a more natural appearance. A 52-year-old male presented to our office with severe abfraction lesions (Fig. 16). Several compos- ite materials were tried in and three layers of different brand composites were selected. The molar was first prepared using the laser and restored. Then the two pre- molars were prepared using the laser (Fig. 17). A 27-year-old male presented to our office with pitted and stained incisors (Fig. 10). He was getting married in a few months and was concerned about the appearance of his smile in the wedding photographs. Composite from a new two-component general purpose and enamel sys- tem was tried in and layered to determine the appropriate shades to be used (Fig. 11). The laser was used to pre- The first layer of dentine material was used (aura Dentine D7; Fig. 18). Then a layer of regular all- purpose shade A3 composite was used (TPH Spectra, Dentsply; Fig. 19). Finally, a spherical composite shade A2 was used for the enamel layer (Estelite Sigma Quick, Tokuyama; Fig. 20). The composites were shaped, finished and polished (Fig. 21). 14 1 2018