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ePaper created 2018-03-14, 11:21:34 | version 1.38.0
industry | Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 1: A 15-year-old male presented with peg lateral incisors and twisted maxillary canines. Fig. 2: Photograph with template. Fig. 3: Dentine shade 6 was used to mimic the shade of the natural dentine. Fig. 4: Multi-purpose composite shade MC3 was added. Fig. 5: Enamel shade layer E1 was added. Fig. 6: Fin- ished restoration for the right maxillary lateral incisor. Fig. 7: Finished restoration for the left canine and lateral incisor. Fig. 8: Preparation is accomplished by a series of pulsed energy emissions resulting in multiple small dot-shaped areas of tooth removed on the surface of the tooth. Fig. 9: The handpiece is constantly moved and the resulting tooth shaping is observed. The second increment added was multi-purpose composite shade MC3 (aura, SDI; Fig. 4). White, or- ange and brown tints were painted over the second increment to characterise and mimic the shade pat- terns of the adjacent teeth (shade modification tints, SDI). Finally, an enamel shade layer E1 was added to cover the entire restoration and build to full contour (Fig. 5). The restoration was shaped using diamonds and finishing carbides. Finishing and polishing was completed for the canine. The process was completed for the right maxillary lateral incisor (Fig. 6). Then the left canine and lateral incisor were restored in a similar fashion (Fig. 7). Er:YAG lasers Erbium lasers deliver pulsed energy onto the water, containing surface of the tooth and the water is vapo- rised ablating the surrounding tooth structure. Prepara- tion is accomplished by a series of pulsed energy emis- sions resulting in multiple small dot-shaped areas of tooth removed on the surface of the tooth (Fig. 8). The effect is very superficial with less vibration and heat.9 A pri- mary advantage of tooth preparation with Er:YAG is often preparation can be achieved with little or no anaesthesia. It is important to start with very low energy for the first minute to condition the pulp so that there is no discom- 13 1 2018