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cosmetic dentistry_ beauty & science

40 I I industry report _ direct composite resin restorations cosmeticdentistry 4_2011 Many filling materials can be polished to a high gloss simply because they are not particularly hard, but these materials lose their shine within a short amount of time owing to poor abrasion re- sistance; aesthetics at the price of durability is not a good compromise. In my experience, Amaris composite exhibits excellent polishing character- istics, high gloss and very good gloss retention. In addition, up to eight minutes of handling time in ambient operatory light, an additional bleach opaque shade and two flowable choices cover all clinical situations, helping to make this a versatile material. The following case report demonstrates a clini- cal situation for which this composite system was successfully utilised to achieve optimal anterior aesthetics. _Case report The patient, a 23-year-old female, presented with the chief complaint of discoloured, fractured and sensitive maxillary anterior central incisors (Fig.1).Adirectcompositerestorationwasselected as the treatment of choice to correct the aesthetic deficiencies, tooth sensitivity and structural flaws with minimal tooth reduction. Following adminis- tration of local anaesthesia, minimal tooth prepa- ration was accomplished using a football-shaped diamond bur (SS White) and a standard round- end, tapered chamfer diamond bur (SS White). The stained enamel was removed and a scalloped pre- paration margin was created at the interproximal ofbothcentralincisors(Figs.2&3).Discolouration at the composite–tooth junction (i.e. margin) is an indication of micro-leakage and can be an in- Fig. 9_A custom shade tab was used to determine the correct translucent enamel colour. Fig. 10_TL composite (Amaris) was tried against the prepared tooth. Fig. 11_TL composite was then sculpted to shape, completing the restoration. Fig. 12_The restored maxillary right central incisor next to the unrestored left central incisor. Fig. 13_A dual-cure bonding agent (Futurabond DC) was applied to the left central incisor. Fig. 14_O1 dentine replacement was applied. Fig. 14Fig. 13 Fig. 12Fig. 11 Fig. 10Fig. 9