cosmetic dentistry_ beauty & science

36 I I industry report _ minimal invasive treatment preparation. Teeth #12 and 22 were prepared for two conventional veneers. They were the only two teeth that required the removal of 0.6 mm of the dentalenamel.Furthermore,mesialmicro-prepara- tion of teeth #41 and 31 was planned with the aim of augmenting these teeth with the corresponding veneers. Despite the smallness of this corrective step, it served to close what the patient considered to be an unattractive gap in the lower jaw (Fig. 9). _Skill and precision This case required utmost skill and precision. The restoration involved six very thin non-prep veneers (Fig.10).Moreover,twoveneershadtobefabricated for teeth with micro-preparation (the deciduous canines were only ground on the distal side to re- move 0.3 mm of the dental enamel), as well as two veneers for teeth that had been reduced by 0.6 mm. We decided to use IPS e.max Press lithium disilicate glass-ceramic (Ivoclar Vivadent) to produce the ten restorations. This material is used to fabricate monolithicrestorations,whicharecharacterisedby highstrength(400MPa)andexceptionalaesthetics. We used the new IPS e.max Press Value ingots for the veneers on the central incisors and the two deciduous teeth. The brightness of restorations can becarefullycontrolledwiththismaterial.Asaresult, smooth integration into the existing dentition is ensured(Fig.11).Inthepresentcase,thehightrans- lucency of this material enabled us to lengthen the edges of the central incisors. Therefore, the propor- tions of the teeth were more balanced, which en- hanced the patient’s smile. Instead of a Value ingot, anIPSe.maxPressOpalingotwasusedtoconstruct the lower incisors. In contrast to the shades of the Value ingots, these blocks are opalescent and the levelofthisopticalpropertycanbeadjustedasnec- essary (Fig. 12). Furthermore, these materials are characterised by their ability to match the shade of the underlying tooth structure. As a result, certain physical properties, such as brightness and opales- cence, which are often difficult to reproduce, can be faithfully imitated or even enhanced. Fig. 10_The restorations were modelled in the dental laboratory and... Fig. 11_...reproduced with pressed ceramics. Figs. 12–14_The material used for the film-thin veneers (IPS e.max Press) enabled utmost translucency to be achieved and the opacity to be adjusted according to the requirements. Fig. 15_Some of the veneers were much thinner than a fingernail. cosmeticdentistry 1_2012 Fig. 14 Fig. 15 Fig. 12 Fig. 13 Fig. 10 Fig. 11