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cosmetic dentistry_ beauty & science

Using this basic principle, aesthetic restoration ac- complishedwhenusingAmarisissimplifiedwithan easy-to-understand, two-step shade concept with five opaque dentine and three translucent enamel shades. Selectingthecorrectshadeissimplifiedbyusing the custom shade guide, which is made from origi- nal light-cured composite material. Colour match- ing is greatly simplified because one does not have toemployacomplicatedandtime-consumingmul- tilayershadetechnique.Withminimaleffort,colour matching is developed along the way. The colour of dentine shines through enamel and this system offersashadesystemthatfollowsthisnaturalprin- ciple, simplifying direct aesthetic composite resto- rations into two simple steps. The material dem- onstrates an excellent chameleon-like effect with non-opaqueshadesandoutstandingshadematch- ing on the tooth. This excellent adaptation makes complex (shade) layering techniques unnecessary, and delivers an aesthetic result with fewer shades. _Application possibilities Amaris is a hybrid composite suitable for all classes of restorations. It is stable in posterior teeth and highly aesthetic for anterior teeth. A flowable version (Amaris Flow) supplements the restorative possibilities. With excellent wettability properties, the material flows directly out of the syringe in- to extremely small cavities. It is available in two special universal shades: HT (High Translucent) and HO (High Opaque). The HT flowable is ideal for highly translucent incisal edges and small enamel or incisal defects, and as a high-gloss finishing layer. HO flowable is perfect for thinly masking discolouration, covering amalgam stains, mimicking the cervical areas in olderteeth,blendingwithadjacentPFMcrowns,and as a restorative base following endodontic treat- ment. Optimal matching of Amaris Flow to Amaris paste (in shade and translucency) allows combined application with the composite-bonded-to-flow- able technique, without reducing the stability or aesthetics. _Surface hardness and abrasion The abrasion caused by chewing load is still a centralaspectofthedurabilityofrestorativedental materials.Highabrasionratesintheposteriortooth region lead to edge fractures and loss of the occlu- sion. Abrasion in the anterior tooth region leads to loss of lustre, which makes the restoration appear dull and unattractive. Thus, it is a fundamental goal of the development of restoratives to optimise hardness and abrasion resistance. The extremely highfillercontent(80.0w/w%)providestheAmaris highly aesthetic hybrid composite with an excep- tionallyhardsurface.Thisensuresadurablerestora- tion owing to its high physical strength and high polish abrasion resistance. Fig. 5_A custom shade tab was used to determine the correct opaque dentine colour. Fig. 6_O1 composite (Amaris) was tried against the prepared tooth. Fig. 7_An initial layer of O1 was applied. Fig. 8_A second O1 increment was then placed. I 39 industry report _ direct composite resin restorations I cosmeticdentistry 4_2011 Fig. 8Fig. 7 Fig. 6Fig. 5